Texas Instruments | Quadruple Bus Transceivers (Rev. A) | Datasheet | Texas Instruments Quadruple Bus Transceivers (Rev. A) Datasheet

Texas Instruments Quadruple Bus Transceivers (Rev. A) Datasheet
SN54LS243, SN74LS243
www.ti.com ............................................................................................................................................................. SDLS145A – APRIL 1985 – REVISED JULY 2008
QUADRUPLE BUS TRANSCEIVERS
FEATURES
1
•
•
•
Two-Way Asynchronous Communication
Between Data Buses
PNP Inputs Reduce D-C Loading
Hysteresis (Typically 400 mV) at Inputs
Improves Noise Margin
SN54LS243 . . . J OR W PACKAGE
SN74LS243 . . . D, N, OR NS PACKAGE
(TOP VIEW)
GAB
1
14
VCC
NC
2
13
GBA
A1
3
12
NC
A2
4
11
B1
A3
5
10
B2
A4
6
9
B3
GND
7
8
B4
FUNCTION TABLE
(EACH TRANSCEIVER)
INPUTS
SNxxLS243
GAB
GBA
L
L
H
H
B to A
H
L
Isolation
L
H
Latch A and B
(A = B)
A to B
DESCRIPTION
These four-data-line transceivers are designed for asynchronous two-way communications between data buses.
SN74LS243 can be used to drive terminated lines down to 133 Ω.
SN54LS243 is characterized for operation over the full military temperature range of –55°C to 125°C.
SN74LS243 is characterized for operation from 0°C to 70°C.
SCHEMATICS OF INPUTS AND OUTPUTS
TYPICAL OF ALL OUTPUTS
EQUIVALENT OF EACH INPUT
VCC
VCC
50 Ω NOM
17 kΩ
INPUT
OUTPUT
GND
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1985–2008, Texas Instruments Incorporated
SN54LS243, SN74LS243
SDLS145A – APRIL 1985 – REVISED JULY 2008 ............................................................................................................................................................. www.ti.com
LOGIC SYMBOL
GBA
GAB
A1
13
1
3
EN1
EN2
11
1
B1
2
A2
A3
A4
A.
4
10
5
9
6
8
B2
B3
B4
These symbols are in accordance with ANSI/EEE Std. 91-1984 and IEC Publication 617-12.
LOGIC DIAGRAM (POSITIVE LOGIC)
1
GAB
2
Submit Documentation Feedback
13
GBA
A1 3
11 B1
A2 4
10 B2
A3 5
9 B3
A4 6
8 B4
Copyright © 1985–2008, Texas Instruments Incorporated
Product Folder Link(s): SN54LS243 SN74LS243
SN54LS243, SN74LS243
www.ti.com ............................................................................................................................................................. SDLS145A – APRIL 1985 – REVISED JULY 2008
ABSOLUTE MAXIMUM RATINGS (1)
MIN
VCC
Supply voltage
VIN
Input voltage
MAX
(2)
OFF-state output voltage
TA
Operating free-air temperature range
Tstg
Storage temperature range
(1)
(2)
UNIT
7
V
7
V
5.5
V
SN54LS243
–55
125
SN74LS243
0
70
–65
150
°C
°C
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Voltage values are with respect to network ground terminal.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
SN54LS243
SN74LS243
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.75
5
5.25
UNIT
VCC
Supply voltage (1)
VIH
High-level input voltage
VIL
Low-level input voltage
0.7
0.8
V
IOH
High-level output voltage
–12
–15
mA
IOL
Low-level output voltage
12
24
mA
TA
Operating free-air temperature
70
°C
(1)
2
–55
2
125
0
V
V
Voltage values are with respect to network ground terminal.
Copyright © 1985–2008, Texas Instruments Incorporated
Product Folder Link(s): SN54LS243 SN74LS243
Submit Documentation Feedback
3
SN54LS243, SN74LS243
SDLS145A – APRIL 1985 – REVISED JULY 2008 ............................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
VIK
A or B
Hysteresis (VT+ – VT–)
VOH
SN54LS243
TEST CONDITIONS (1)
PARAMETER
VCC = MIN,
II = –18 mA
VIH = 2 V,
MIN
TYP (2) MAX
–1.5
VCC = MIN,
VCC = MIN,
SN74LS243
TYP (2) MAX
MIN
VIL = MAX,
IOH = –3 mA
VIL = 0.5 V,
IOH = MAX
–1.5
UNIT
V
0.2
0.4
0.2
0.4
V
2.4
3.1
2.4
3.1
V
2
2
VOL
VCC = MIN,
VIL = MAX
VIH = 2 V,
IOZH
VCC = MIN,
VIL = MAX,
VIH = 2 V,
VO = 2.7 V
40
40
µA
IOZL
VCC = MIN,
VIL = MAX,
VIH = 2 V,
VO = 0.4 V
–200
–200
µA
VI = 5.5 V
0.1
0.1
VI = 7 V
0.1
0.1
20
20
–0.2
–0.2
–0.2
–0.2
II
A or B
GAB or GBA
IIH
0.25
B inputs
GAB or GBA
IOS
VCC = MAX,
VCC = MAX, VI = 0.4 V,
GAB and GBA at 0 V
VCC = MAX, VI = 0.4 V,
GAB and GBA at 4.5 V
VCC = MAX, VI = 0.4 V,
Outputs low
VCC = MAX,
(3)
–40
–225
Outputs open,
All outputs
disabled
(1)
(2)
(3)
0.25
0.4
0.35
0.5
–0.2
VCC = MAX
Outputs high
ICC
0.4
IOL = 24 mA
VCC = MAX,
A inputs
IIL
IOL = 12 mA
V
mA
µA
mA
–0.2
–40
–225
22
38
22
38
29
50
29
50
32
54
32
54
mA
mA
For conditions shown as MIN or MAX, use the appropriate value specified under "recommended operating conditions."
All typical values are at VCC = 5 V, TA = 25°C.
ICC is measured with transceivers eabled in one direction only, or with all transceivers disabled.
SWITCHING CHARACTERISTICS
VCC = 5 V, TA = 25°C
PARAMETER
SN54LS243
MAX
tPLH
9
tPHL
12
MAX
14
12
18
ns
18
12
18
ns
20
30
20
30
ns
tPZH
15
23
15
23
ns
tPLZ
10
20
10
20
ns
15
25
15
25
ns
tPHZ
RL = 667 Ω,
Submit Documentation Feedback
CL = 45 pF
CL = 5 pF
MIN
UNIT
TYP
RL = 667 Ω,
MIN
SN74LS243
TYP
tPZL
4
TEST CONDITIONS
Copyright © 1985–2008, Texas Instruments Incorporated
Product Folder Link(s): SN54LS243 SN74LS243
PACKAGE OPTION ADDENDUM
www.ti.com
24-Aug-2018
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
8002002CA
ACTIVE
CDIP
J
14
1
TBD
A42
N / A for Pkg Type
-55 to 125
8002002CA
SNJ54LS243J
8002002DA
ACTIVE
CFP
W
14
1
TBD
A42
N / A for Pkg Type
-55 to 125
8002002DA
SNJ54LS243W
SN54LS243J
ACTIVE
CDIP
J
14
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54LS243J
SN74LS243D
ACTIVE
SOIC
D
14
50
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS243
SN74LS243DR
ACTIVE
SOIC
D
14
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS243
SN74LS243N
ACTIVE
PDIP
N
14
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS243N
SN74LS243NE4
ACTIVE
PDIP
N
14
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS243N
SNJ54LS243J
ACTIVE
CDIP
J
14
1
TBD
A42
N / A for Pkg Type
-55 to 125
8002002CA
SNJ54LS243J
SNJ54LS243W
ACTIVE
CFP
W
14
1
TBD
A42
N / A for Pkg Type
-55 to 125
8002002DA
SNJ54LS243W
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
24-Aug-2018
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF SN54LS243, SN74LS243 :
• Catalog: SN74LS243
• Military: SN54LS243
NOTE: Qualified Version Definitions:
• Catalog - TI's standard catalog product
• Military - QML certified for Military and Defense Applications
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
26-Jan-2013
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
SN74LS243DR
Package Package Pins
Type Drawing
SOIC
D
14
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
2500
330.0
16.4
Pack Materials-Page 1
6.5
B0
(mm)
K0
(mm)
P1
(mm)
9.0
2.1
8.0
W
Pin1
(mm) Quadrant
16.0
Q1
PACKAGE MATERIALS INFORMATION
www.ti.com
26-Jan-2013
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
SN74LS243DR
SOIC
D
14
2500
367.0
367.0
38.0
Pack Materials-Page 2
PACKAGE OUTLINE
J0014A
CDIP - 5.08 mm max height
SCALE 0.900
CERAMIC DUAL IN LINE PACKAGE
PIN 1 ID
(OPTIONAL)
A
4X .005 MIN
[0.13]
.015-.060 TYP
[0.38-1.52]
1
14
12X .100
[2.54]
14X .014-.026
[0.36-0.66]
14X .045-.065
[1.15-1.65]
.010 [0.25] C A B
.754-.785
[19.15-19.94]
8
7
B
.245-.283
[6.22-7.19]
.2 MAX TYP
[5.08]
C
.13 MIN TYP
[3.3]
SEATING PLANE
.308-.314
[7.83-7.97]
AT GAGE PLANE
.015 GAGE PLANE
[0.38]
0 -15
TYP
14X .008-.014
[0.2-0.36]
4214771/A 05/2017
NOTES:
1. All controlling linear dimensions are in inches. Dimensions in brackets are in millimeters. Any dimension in brackets or parenthesis are for
reference only. Dimensioning and tolerancing per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This package is hermitically sealed with a ceramic lid using glass frit.
4. Index point is provided on cap for terminal identification only and on press ceramic glass frit seal only.
5. Falls within MIL-STD-1835 and GDIP1-T14.
www.ti.com
EXAMPLE BOARD LAYOUT
J0014A
CDIP - 5.08 mm max height
CERAMIC DUAL IN LINE PACKAGE
(.300 ) TYP
[7.62]
SEE DETAIL A
SEE DETAIL B
1
14
12X (.100 )
[2.54]
SYMM
14X ( .039)
[1]
8
7
SYMM
LAND PATTERN EXAMPLE
NON-SOLDER MASK DEFINED
SCALE: 5X
.002 MAX
[0.05]
ALL AROUND
(.063)
[1.6]
METAL
( .063)
[1.6]
SOLDER MASK
OPENING
METAL
(R.002 ) TYP
[0.05]
.002 MAX
[0.05]
ALL AROUND
SOLDER MASK
OPENING
DETAIL A
DETAIL B
SCALE: 15X
13X, SCALE: 15X
4214771/A 05/2017
www.ti.com
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