Texas Instruments | Input and Output Characteristics of Digital Integrated Circuits | Application notes | Texas Instruments Input and Output Characteristics of Digital Integrated Circuits Application notes

Texas Instruments Input and Output Characteristics of Digital Integrated Circuits Application notes
Input and Output Characteristics
of Digital Integrated Circuits
SDYA010
November 1996
1
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2
Contents
Title
Page
Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Input Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Output Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
List of Illustrations
Figure
Title
Page
1
Input Characteristics of the SN7400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Input Characteristics of the SN7440 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3
Input Characteristics of the SN74LS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4
Input Characteristics of the SN74LS40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5
Input Characteristics of the SN74LS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6
Input Characteristics of the SN74S00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7
Input Characteristics of the SN74S40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8
Input Characteristics of the SN74S240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9
Input Characteristics of the SN74ALS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
10
Input Characteristics of the SN74ALS40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
11
Input Characteristics of the SN74ALS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
12
Input Characteristics of the SN74ALS1004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
13
Input Characteristics of the SN74AS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
14
Input Characteristics of the SN74AS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
15
Input Characteristics of the SN74AS1004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
16
Input Characteristics of the SN74F00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
17
Input Characteristics of the SN74F40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
18
Input Characteristics of the SN74F240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
19
Input Characteristics of the SN74HC00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
20
Input Characteristics of the SN74HC240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
21
Input Characteristics of the SN74AC11240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
22
Input Characteristics of the SN74BCT240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
23
Input Characteristics of the SN74BCT25240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
24
Input Characteristics of the SN74ABT240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
25
Input Characteristics of the SN74LV00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Widebus is a trademark of Texas Instruments Incorporated.
iii
List of Illustrations (continued)
Figure
iv
Title
Page
26
Input Characteristics of the SN74LV244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
27
Input Characteristics of the SN74LVC244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
28
Input Characteristics of the SN74ALVC16244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
29
Input Characteristics of the SN74LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
30
Output Characteristics of the SN7400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
31
Output Characteristics of the SN7440 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
32
Output Characteristics of the SN74LS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
33
Output Characteristics of the SN74LS40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
34
Output Characteristics of the SN74LS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
35
Output Characteristics of the SN74S00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
36
Output Characteristics of the SN74S40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
37
Output Characteristics of the SN74S240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
38
Output Characteristics of the SN74ALS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
39
Output Characteristics of the SN74ALS40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
40
Output Characteristics of the SN74ALS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
41
Output Characteristics of the SN74ALS1004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
42
Output Characteristics of the SN74AS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
43
Output Characteristics of the SN74AS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
44
Output Characteristics of the SN74AS1004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
45
Output Characteristics of the SN74F00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
46
Output Characteristics of the SN74F40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
47
Output Characteristics of the SN74F240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
48
Output Characteristics of the SN74HC00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
49
Output Characteristics of the SN74HC240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
50
Output Characteristics of the SN74AC11240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
51
Output Characteristics of the SN74BCT240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
52
Output Characteristics of the SN74BCT25240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
53
Output Characteristics of the SN74ABT240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
54
Output Characteristics of the SN74LV00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
55
Output Characteristics of the SN74LV244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
56
Output Characteristics of the SN74LVC244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
57
Output Characteristics of the SN74ALVC16244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
58
Output Characteristics of the SN74LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
59
Setup for Obtaining Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
60
Waveforms of the SN7400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
61
Waveforms of the SN7440 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
62
Waveforms of the SN74LS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
63
Waveforms of the SN74LS40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
64
Waveforms of the SN74LS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
List of Illustrations (continued)
Figure
Title
Page
65
Waveforms of the SN74S00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
66
Waveforms of the SN74S40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
67
Waveforms of the SN74S240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
68
Waveforms of the SN74ALS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
69
Waveforms of the SN74ALS40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
70
Waveforms of the SN74ALS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
71
Waveforms of the SN74ALS1004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
72
Waveforms of the SN74AS00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
73
Waveforms of the SN74AS240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
74
Waveforms of the SN74AS1004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
75
Waveforms of the SN74F00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
76
Waveforms of the SN74F40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
77
Waveforms of the SN74F240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
78
Waveforms of the SN74HC00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
79
Waveforms of the SN74HC240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
80
Waveforms of the SN74AC11240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
81
Waveforms of the SN74BCT240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
82
Waveforms of the SN74BCT25240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
83
Waveforms of the SN74ABT240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
84
Waveforms of the SN74LV00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
85
Waveforms of the SN74LV244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
86
Waveforms of the SN74LVC244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
87
Waveforms of the SN74ALVC16244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
88
Waveforms of the SN74LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
v
vi
Abstract
This report contains a comprehensive collection of the input and output characteristic curves of typical integrated circuits from
various logic families. These curves go beyond the information given in data sheets by providing additional details regarding
the characteristics of the components. This knowledge is particularly useful when, for example, a decision must be made as
to which circuit should be used in a bus system, or when the waveforms that can be expected in a transmission system need
to be predicted by using a Bergeron chart. In addition, the waveforms at the outputs of these components are shown when loaded
with a 50-Ω coaxial line, which is open circuited at the end of the line. These oscillograms are of great assistance when
generating models for simulation programs that analyze the dynamic behavior of the integrated circuits in a particular
environment.
Introduction
The parameters given in the data sheets of integrated circuits can give only a limited indication of their actual behavior in a
system. Data sheets generally give only information regarding the behavior over an input and output voltage range of 0 to 5
volts. The output currents specified over this range provide an incomplete picture of the actual performance that can be
expected from the device. Often the behavior outside the usually accepted operating conditions is of interest. This is, for
example, the situation when the characteristic curves need to be used to predict the signal waveforms resulting from line
reflections.
For requirements of this kind, the most important input and output characteristic curves of logic circuits are shown in the figures
that follow. In view of the wide range of integrated circuits that are available, it has been necessary to limit this information
to typical characteristics only. As a result, the input and output characteristics of the following circuits have been shown as
being representative of other components which have similar circuit behavior:
’00:
The characteristic curves of this NAND gate are representative of all logic circuits having normal drive
capability, such as gates, flip-flops, counters, multiplexers, etc.
’40:
For a range of applications, gates are available in several logic families that have increased drive capability.
Such components can supply about three times the output current, when compared with the normal
drive-capability logic circuits mentioned above.
’1004: A special group of driver circuits was introduced into the ALS and AS family for applications requiring
a very large output current. These components play a significant role in clock distribution systems.
’240:
The output characteristics of these bus interface circuits are of particular importance when a decision must
be made as to which circuit family should be used for a specific system requirement. The available output
current has a decisive influence on the distortion of signals on bus lines.
’25240: The incident-wave-switching (IWS) driver was developed to meet the requirements imposed by fast bus
systems and applications with exceptionally low-resistance lines. Since these components play a
significant role in applications of this kind, their input and output characteristics have been included.
Table 1 provides an overall view of the input and output characteristics curves shown on the following pages.
1
Table 1. Typical Output Types in the Various Logic Families
FAMILY
SN74
SN74LS
SN74S
SN74ALS
SN74AS
SN74F
SN74HC
TYPE
’00
’40
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
SN74AC
SN74BCT
SN74ABT
SN74LV
✓
SN74LVC
SN74ALCV
SN74LVT
✓
’240
✓
✓
✓
✓
✓
✓
✓†
✓
✓
✓
✓
✓‡
✓
’1004
’25240
✓
✓
✓
† With the AC family, the device type is SN74AC11240.
‡ With the ALVC family, only the Widebus function SN74ALVC16240 is available.
Waveforms at the outputs of the integrated circuits in the above table are shown in Figures 60 through 88. For these
measurements, the devices under test were loaded with a 1.3-m coaxial cable having a characteristic impedance of 50 Ω; the
end of the line was open circuit. These waveforms provide good insight into the dynamic behavior of the components. In
particular, the oscillograms provide information regarding drive capability with a low-resistance load, together with an
indication of the line reflections that can be expected.
Acknowledgment
The author of this document is Peter Forstner.
2
Input Characteristics
7V
6V
5V
SN7400
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
80 mA
100 mA
Figure 1. Input Characteristics of the SN7400
7V
6V
5V
SN7440
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
Figure 2. Input Characteristics of the SN7440
7V
6V
5V
SN74LS00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 3. Input Characteristics of the SN74LS00
3
7V
6V
5V
SN74LS40
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 4. Input Characteristics of the SN74LS40
7V
6V
5V
SN74LS240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 5. Input Characteristics of the SN74LS240
7V
6V
5V
SN74S00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
Figure 6. Input Characteristics of the SN74S00
4
100 mA
7V
6V
5V
SN74S40
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 7. Input Characteristics of the SN74S40
7V
6V
5V
SN74S240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 8. Input Characteristics of the SN74S240
7V
6V
5V
SN74ALS00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 9. Input Characteristics of the SN74ALS00
5
7V
6V
5V
SN74ALS40
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 10. Input Characteristics of the SN74ALS40
7V
6V
5V
SN74ALS240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 11. Input Characteristics of the SN74ALS240
7V
6V
5V
SN74ALS1004
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
Figure 12. Input Characteristics of the SN74ALS1004
6
100 mA
7V
6V
5V
SN74AS00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 13. Input Characteristics of the SN74AS00
7V
6V
5V
SN74AS240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 14. Input Characteristics of the SN74AS240
7V
6V
5V
SN74AS1004
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 15. Input Characteristics of the SN74AS1004
7
7V
6V
5V
SN74F00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 16. Input Characteristics of the SN74F00
7V
6V
5V
SN74F40
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 17. Input Characteristics of the SN74F40
7V
6V
5V
SN74F240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
Figure 18. Input Characteristics of the SN74F240
8
100 mA
7V
6V
5V
SN74HC00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 19. Input Characteristics of the SN74HC00
7V
6V
5V
SN74HC240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 20. Input Characteristics of the SN74HC240
7V
6V
5V
SN74AC11240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 21. Input Characteristics of the SN74AC11240
9
7V
6V
5V
SN74BCT240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 22. Input Characteristics of the SN74BCT240
7V
6V
5V
SN74BCT25240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 23. Input Characteristics of the SN74BCT25240
7V
6V
5V
SN74ABT240
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
Figure 24. Input Characteristics of the SN74ABT240
10
100 mA
7V
6V
5V
SN74LV00
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 25. Input Characteristics of the SN74LV00
7V
6V
5V
SN74LV244
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 26. Input Characteristics of the SN74LV244
7V
6V
5V
SN74LVC244
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 27. Input Characteristics of the SN74LVC244
11
7V
6V
5V
SN74ALVC16244
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
100 mA
Figure 28. Input Characteristics of the SN74ALVC16244
7V
6V
5V
SN74LVT244
4V
3V
2V
1V
0V
–1 V
–2 V
–100 mA
–80 mA
–60 mA
–40 mA
–20 mA
0 mA
20 mA
40 mA
60 mA
80 mA
Figure 29. Input Characteristics of the SN74LVT244
12
100 mA
Output Characteristics
7V
6V
5V
SN7400
4V
3V
2V
1V
0V
–1 V
–2 V
–3 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 30. Output Characteristics of the SN7400
7.00 V
6.00 V
5.00 V
SN7440
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 31. Output Characteristics of the SN7440
7.00 V
6.00 V
5.00 V
SN74LS00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 32. Output Characteristics of the SN74LS00
13
7.00 V
6.00 V
5.00 V
SN74LS40
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 33. Output Characteristics of the SN74LS40
7.00 V
6.00 V
5.00 V
SN74LS240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 34. Output Characteristics of the SN74LS240
7.00 V
6.00 V
5.00 V
SN74S00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
Figure 35. Output Characteristics of the SN74S00
14
200 mA
7.00 V
6.00 V
5.00 V
SN74S40
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 36. Output Characteristics of the SN74S40
7.00 V
6.00 V
5.00 V
SN74S240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 37. Output Characteristics of the SN74S240
7.00 V
6.00 V
5.00 V
SN74ALS00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 38. Output Characteristics of the SN74ALS00
15
7.00 V
6.00 V
5.00 V
SN74ALS40
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 39. Output Characteristics of the SN74ALS40
7.00 V
6.00 V
5.00 V
SN74ALS240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 40. Output Characteristics of the SN74ALS240
7.00 V
6.00 V
5.00 V
SN74ALS1004
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
Figure 41. Output Characteristics of the SN74ALS1004
16
200 mA
7.00 V
6.00 V
5.00 V
SN74AS00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 42. Output Characteristics of the SN74AS00
7.00 V
6.00 V
5.00 V
SN74AS240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 43. Output Characteristics of the SN74AS240
7.00 V
6.00 V
5.00 V
SN74AS1004
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 44. Output Characteristics of the SN74AS1004
17
7.00 V
6.00 V
5.00 V
SN74F00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 45. Output Characteristics of the SN74F00
7.00 V
6.00 V
5.00 V
SN74F40
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 46. Output Characteristics of the SN74F40
7.00 V
6.00 V
5.00 V
SN74F240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
Figure 47. Output Characteristics of the SN74F240
18
200 mA
7.00 V
6.00 V
5.00 V
SN74HC00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 48. Output Characteristics of the SN74HC00
7.00 V
6.00 V
5.00 V
SN74HC240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Output Current
Figure 49. Output Characteristics of the SN74HC240
7.00 V
6.00 V
5.00 V
SN74AC11240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 50. Output Characteristics of the SN74AC11240
19
7.00 V
6.00 V
5.00 V
SN74BCT240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 51. Output Characteristics of the SN74BCT240
7.00 V
6.00 V
5.00 V
SN74BCT25244
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 52. Output Characteristics of the SN74BCT25240
7.00 V
6.00 V
5.00 V
SN74ABT240
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
Output Current
Figure 53. Output Characteristics of the SN74ABT240
20
200 mA
7.00 V
6.00 V
5.00 V
SN74LV00
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 54. Output Characteristics of the SN74LV00
7.00 V
6.00 V
5.00 V
SN74LV244
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 55. Output Characteristics of the SN74LV244
7.00 V
SN74LVC244
6.00 V
5.00 V
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 56. Output Characteristics of the SN74LVC244
21
7.00 V
SN74ALVC16244
6.00 V
5.00 V
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
200 mA
Figure 57. Output Characteristics of the SN74ALVC16244
7.00 V
6.00 V
5.00 V
SN74LVT244
4.00 V
3.00 V
2.00 V
1.00 V
0.00 V
–1.00 V
–2.00 V
–3.00 V
–200 mA
–160 mA
–120 mA
–80 mA
–40 mA
0 mA
40 mA
80 mA
120 mA
160 mA
Figure 58. Output Characteristics of the SN74LVT244
22
200 mA
Output Waveforms
The setup shown in Figure 59 was used to obtain voltage waveforms of typically representative output stages (see Figures 60
through 88).
Measurement Point
Input
Measurement Point
End of Cable
Measurement Point
Output
Z = 50 Ω
L = 130 cm
Figure 59. Setup for Obtaining Output Waveforms
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
SN7400
–4 V
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
Figure 60. Waveforms of the SN7400
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN7440
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
Figure 61. Waveforms of the SN7440
23
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74LS00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
175 ns
200 ns
Figure 62. Waveforms of the SN74LS00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74LS40
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 63. Waveforms of the SN74LS40
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN74LS240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 64. Waveforms of the SN74LS240
24
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74S00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
175 ns
200 ns
Figure 65. Waveforms of the SN74S00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74S40
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 66. Waveforms of the SN74S40
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN74S240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 67. Waveforms of the SN74S240
25
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74ALS00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
175 ns
200 ns
Figure 68. Waveforms of the SN74ALS00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74ALS40
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 69. Waveforms of the SN74ALS40
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN74ALS240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 70. Waveforms of the SN74ALS240
26
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74ALS1004
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
Figure 71. Waveforms of the SN74ALS1004
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74AS00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
Figure 72. Waveforms of the SN74AS00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN74AS240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 73. Waveforms of the SN74AS240
27
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74AS1004
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
175 ns
200 ns
Figure 74. Waveforms of the SN74AS1004
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74F00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 75. Waveforms of the SN74F00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN74F40
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 76. Waveforms of the SN74F40
28
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74F240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
175 ns
200 ns
Figure 77. Waveforms of the SN74F240
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74HC00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 78. Waveforms of the SN74HC00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
–2 V
End of Cable
Input
–3 V
–4 V
SN74HC240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 79. Waveforms of the SN74HC240
29
8V
Output
7V
6V
5V
4V
3V
2V
1V
0V
End of Cable
–1 V
Input
–2 V
SN74AC11240
–3 V
–4 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
Figure 80. Waveforms of the SN74AC11240
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
SN74BCT240
–4 V
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
Figure 81. Waveforms of the SN74BCT240
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74BCT25240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
Figure 82. Waveforms of the SN74BCT25240
30
200 ns
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74ABT240
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
Figure 83. Waveforms of the SN74ABT240
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74LV00
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
Figure 84. Waveforms of the SN74LV00
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74LV244
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 85. Waveforms of the SN74LV244
31
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74LVC244
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
175 ns
200 ns
175 ns
200 ns
Figure 86. Waveforms of the SN74LVC244
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
Input
–2 V
End of Cable
–3 V
–4 V
SN74ALVC16244
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 87. Waveforms of the SN74ALVC16244
7V
Output
6V
5V
4V
3V
2V
1V
0V
–1 V
End of Cable
–2 V
Input
–3 V
–4 V
SN74LVT244
–5 V
0 ns
25 ns
50 ns
75 ns
100 ns
125 ns
150 ns
Figure 88. Waveforms of the SN74LVT244
32
175 ns
200 ns
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