74VCX16244
LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE)
WITH 3.6V TOLERANT INPUTS AND OUTPUTS
■
■
■
■
■
■
■
■
3.6V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED : t
PD t
PD t
PD
= 2.5 ns (MAX.) at V
CC
= 3.0 ns (MAX.) at V
= 5.0 ns (MAX.) at V
CC
CC
= 3.0 to 3.6V
= 2.3 to 2.7V
= 1.8V
POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
|I
OH
|I
OH
| = I
| = I
| = I
OL
OL
OL
= 24mA (MIN) at V
CC
= 18mA (MIN) at V
CC
= 6mA (MIN) at V
CC
= 3.0V
= 2.3V
= 1.8V
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 1.8V to 3.6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16244
LATCH-UP PERFORMANCE EXCEEDS
300mA (JESD 17)
ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
ORDER CODES
PACKAGE
TSSOP
PIN CONNECTION
TSSOP
TUBE T & R
74VCX16244TTR
DESCRIPTION
The 74VCX16244 is a low voltage CMOS 16 BIT
BUS BUFFER (NON INVERTED) fabricated with sub-micron silicon gate and five-layer metal wiring
C
2
MOS technology. It is ideal for low power and very high speed 1.8 to 3.6V applications; it can be interfaced to 3.6V signal environment for both inputs and outputs.
Any nG output control governs four BUS
BUFFERS. Output Enable input (nG) tied together gives full 16-bit operation.
When nG is LOW, the outputs are on. When nG is
HIGH, the output are in high impedance state.
This device is designed to be used with 3 state memory address drivers, etc.
All inputs and outputs are equipped with
Obsolete Product(s) - Obsolete Product(s) them 2KV ESD immunity and transient excess voltage.
February 2003 1/11
74VCX16244
INPUT AND OUTPUT EQUIVALENT CIRCUIT
IEC LOGIC SYMBOLS PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1
2, 3, 5, 6
1G Output Enable Input
1Y1 to 1Y4 Data Outputs
8, 9, 11, 12 2Y1 to 2Y4 Data Outputs
13, 14, 16, 17 3Y1 to 3Y4 Data Outputs
19, 20, 22, 23 4Y1 to 4Y4 Data Outputs
24 4G Output Enable Input
25 3G Output Enable Input
30, 29, 27, 26 4A1 to 4A4 Data Outputs
36, 35, 33, 32 3A1 to 3A4 Data Outputs
41, 40, 38, 37 2A1 to 2A4 Data Outputs
47, 46, 44, 43 1A1 to 1A4 Data Outputs
48
4, 10, 15, 21,
28, 34, 39, 45
2G
GND
Output Enable Input
Ground (0V)
7, 18, 31, 42 V
CC
Positive Supply Voltage
TRUTH TABLE
INPUTS OUTPUT
G An Yn
L L L
L Obsolete Product(s) - Obsolete Product(s)
X : Don‘t Care
H
X
H
Z
Z : High Impedance
2/11
74VCX16244
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CC
V
I
V
O
V
O
I
IK
Supply Voltage
DC Input Voltage
DC Output Voltage (OFF State)
DC Output Voltage (High or Low State) (note 1)
DC Input Diode Current
-0.5 to +4.6
-0.5 to +4.6
-0.5 to +4.6
-0.5 to V
CC
- 50
+ 0.5
V
V
V
V mA
I
OK
I
O
I
CC or I
GND
DC Output Diode Current (note 2)
DC Output Current
- 50
±
50
±
100 mA mA
P
D
T stg
DC V
CC or Ground Current per Supply Pin
Power Dissipation
Storage Temperature
400
-65 to +150 mA mW
°C
T
L
Lead Temperature (10 sec) 300 °C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied
1) I
O
2) V
O absolute maximum rating must be observed
< GND, V
O
> V
CC
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter
V
CC
V
I
V
O
V
O
I
OH
, I
OL
Supply Voltage
Input Voltage
Output Voltage (OFF State)
Output Voltage (High or Low State)
High or Low Level Output Current (V
CC
= 3.0 to 3.6V)
I
OH
, I
OL
I
OH
, I
OL
High or Low Level Output Current (V
High or Low Level Output Current (V
T op dt/dv
Operating Temperature
Input Rise and Fall Time (note 1)
1) V
IN from 0.8V to 2V at V
CC
= 3.0V
CC
CC
= 2.3 to 2.7V)
= 1.8V)
Value
1.8 to 3.6
-0.3 to 3.6
0 to 3.6
0 to V
CC
±
24
±
18
±
6
-55 to 125
0 to 10
Unit mA mA
°C ns/V
V
V
V
V mA
3/11
74VCX16244
DC SPECIFICATIONS (2.7V < V
CC
< 3.6V unless otherwise specified)
Test Condition
Symbol Parameter
V
CC
(V)
-40 to 85 °C
Min.
Max.
Value
-55 to 125 °C
Min.
Max.
V
IH
V
IL
V
OH
V
OL
I
I
I off
I
OZ
I
CC
∆
I
CC
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
Power Off Leakage
Current
High Impedance
Output Leakage
Current
Quiescent Supply
Current
I
CC incr. per Input
2.7 to 3.6
2.7 to 3.6
2.7
3.0
2.7 to 3.6
2.7
3.0
2.7 to 3.6
0
I
O
=-100
µ
A
I
O
=-12 mA
I
O
=-18 mA
I
O
=-24 mA
I
O
=100
µ
A
I
O
=12 mA
I
O
=18 mA
I
O
=24 mA
V
I
= 0 to 3.6V
V
I or V
O
= 0 to 3.6V
2.7 to 3.6
V
I
V
O
= V
IH or V
IL
= 0 to 3.6V
2.7 to 3.6
V
I
= V
CC or GND
V
I or V
O
= V
3.6V
CC to
2.7 to 3.6
V
IH
= V
CC
- 0.6V
2.0
V
CC
-0.2
2.2
2.4
2.2
0.8
0.2
0.4
0.4
0.55
±
5
10
±
10
20
±
20
750
2.0
V
CC
-0.2
2.2
2.4
2.2
0.8
0.2
0.4
0.4
0.55
±
5
10
±
10
20
±
20
750
Unit
V
V
V
µ
A
µ
A
µ
A
µ
A
µ
A
4/11
74VCX16244
DC SPECIFICATIONS (2.3V < V
CC
< 2.7V unless otherwise specified)
Test Condition
Symbol Parameter
V
CC
(V)
-40 to 85 °C
Min.
Max.
Value
-55 to 125 °C
Min.
Max.
V
IH
V
IL
V
OH
V
OL
I
I
I off
I
OZ
I
CC
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
Power Off Leakage
Current
High Impedance
Output Leakage
Current
Quiescent Supply
Current
2.3 to 2.7
2.3 to 2.7
2.3
2.3 to 2.7
2.3
2.3 to 2.7
0
2.3 to 2.7
2.3 to 2.7
I
O
=-100
µ
A
I
O
=-6 mA
I
O
=-12 mA
I
O
=-18 mA
I
O
=100
µ
A
I
O
=12 mA
I
O
=18 mA
V
I
= 0 to 3.6V
V
I or V
O
= 0 to 3.6V
V
I
V
O
= V
IH or V
IL
= 0 to 3.6V
V
I
= V
CC or GND
V
I or V
O
= V
3.6V
CC to
1.6
V
CC
-0.2
2.0
1.8
1.7
0.7
0.2
0.4
0.6
±
5
10
±
10
20
±
20
1.6
V
CC
-0.2
2.0
1.8
1.7
0.7
0.2
0.4
0.6
±
5
10
±
10
20
±
20
Unit
V
V
V
µ
A
DC SPECIFICATIONS (1.8V < V
CC
< 2.3V unless otherwise specified)
Test Condition
Symbol Parameter
V
CC
(V)
-40 to 85 °C
Min.
Max.
Value
-55 to 125 °C
Min.
Max.
V
IH
V
IL
V
OH
V
OL
I
I
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
1.8 to 2.3
1.8
1.8
I
O
=-100
µ
A
I
O
=-6 mA
I
O
=100
µ
A
I
O
=6 mA
V
I
0.7 VCC
V
CC
-0.2
1.4
0.2 VCC
0.2
0.3
0.7 VCC
V
CC
-0.2
1.4
0.2 VCC
0.2
0.3
I off
I
OZ
I
CC
Power Off Leakage
Current
High Impedance
Output Leakage
Current
Quiescent Supply
Current
0
1.8
1.8
V
I or V
O
= 0 to 3.6V
V
I
V
O
= V
IH or V
IL
= 0 to 3.6V
V
I
= V
CC or GND
V
I or V
O
= V
3.6V
CC to
10
±
10
20
±
20
10
±
10
20
±
20
Unit
V
V
V
V
µ
A
µ
A
µ
A
µ
A
µ
A
µ
A
5/11
74VCX16244
DYNAMIC SWITCHING CHARACTERISTICS (T a
= 25°C, Input t r
= t f
= 2.0ns, C
L
= 30pF, R
L
= 500
Ω)
Test Condition Value
Symbol Parameter
V
CC
(V)
T
A
= 25 °C Unit
Min.
Typ.
Max.
V
V
OLP
OLV
Dynamic Low Voltage Quiet
Output (note 1, 3)
Dynamic Low Voltage Quiet
Output (note 1, 3)
1.8
2.5
3.3
1.8
2.5
3.3
V
IL
= 0V
V
IH
= V
CC
V
IL
V
IH
= 0V
= V
CC
0.25
0.6
0.8
-0.25
-0.6
-0.8
V
V
V
OHV
Dynamic High Voltage Quiet
Output (note 2, 3)
1.8
2.5
V
IL
V
IH
= 0V
= V
CC
1.5
1.9
V
3.3
2.2
1) Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the LOW state.
2) Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the HIGH state.
3) Parameters guaranteed by design.
AC ELECTRICAL CHARACTERISTICS (C
L
= 30pF, R
L
= 500
Ω,
Input t r
= t f
= 2.0ns
)
Test Condition Value
Symbol Parameter
V
CC
(V)
-40 to 85 °C -55 to 125 °C Unit
Min.
Max.
Min.
Max.
t t t
PLH
PZL
PLZ t t t
PHL
PZH
PHZ
Propagation Delay
Time
Output Enable Time
Output Disable Time
1.8
2.3 to 2.7
3.0 to 3.6
1.8
2.3 to 2.7
3.0 to 3.6
1.8
2.3 to 2.7
3.0 to 3.6
1.5
1.0
0.8
1.5
1.0
0.8
1.5
1.0
0.8
5.0
3.0
2.5
6.5
4.1
3.5
5.0
3.8
3.5
1.5
1.0
0.8
1.5
1.0
0.8
1.5
1.0
0.8
6.3
4.0
3.5
7.5
5.0
4.3
6.3
4.9
4.3
ns ns ns t
OSLH t
OSHL
Output To Output
Skew Time (note1, 2)
1.8
2.3 to 2.7
0.5
0.5
0.5
0.5
ns
3.0 to 3.6
0.5
0.5
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW (t
2) Parameter guaranteed by design
OSLH
= | t
PLHm
- t
PLHn
|, t
OSHL
= | t
PHLm
- t
PHLn
|)
6/11
74VCX16244
CAPACITIVE CHARACTERISTICS
Test Condition Value
Symbol Parameter
V
CC
(V)
T
A
= 25 °C Unit
Min.
Typ.
Max.
C
IN
C
OUT
Input Capacitance
Output Capacitance
1.8, 2.5 or 3.3
V
1.8, 2.5 or 3.3
V
IN
IN
= 0 or V
= 0 or V
CC
CC
6
7 pF pF
C
PD
Power Dissipation Capacitance
(note 1)
1.8, 2.5 or 3.3
f
IN
V
IN
= 10MHz
= 0 or V
CC
20 pF
1) C
PD circuit) is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD x V
CC x f
IN
+ I
CC
/16 (per
TEST CIRCUIT
TEST t
PLH
, t
PHL t
PZL
, t
PLZ
(V
CC
= 3.0 to 3.6V) t
PZL
, t
PLZ
(V
CC
= 2.3 to 2.7V or 1.8V) t
PZH
, t
PHZ
C
L
R
L
R
T
= 30 pF or equivalent (includes jig and probe capacitance)
= R1 = 500
Ω or equivalent
= Z
OUT of pulse generator (typically 50
Ω
)
WAVEFORM SYMBOL VALUES
SWITCH
Open
6V
2V
CC
GND
V
CC Obsolete Product(s) - Obsolete Product(s)
V
IH
V
CC
V
CC
2.7V
V
M
V
X
V
Y
1.5V
V
OL
+ 0.3V
V
OH
- 0.3V
V
CC
/2
V
OL
+ 0.15V
V
OH
- 0.15V
V
CC
/2
V
OL
+ 0.15V
V
OH
- 0.15V
7/11
74VCX16244
WAVEFORM 1 : PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
WAVEFORM 2 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
8/11
DIM.
E1 e
D
E
K
L
A
A1
A2 b c
74VCX16244
MIN.
0.05
0.17
0.09
12.4
6.0
0˚
0.50
TSSOP48 MECHANICAL DATA
mm.
TYP MIN.
MAX.
1.2
0.15
0.002
0.9
0.27
0.20
12.6
0.0067
0.0035
0.488
8.1 BSC
6.2
0.236
0.5 BSC
8˚
0.75
0˚
0.020
inch
TYP.
0.035
0.318 BSC
0.0197 BSC
MAX.
0.047
0.006
0.011
0.0079
0.496
0.244
8˚
0.030
A A2
A1 b e
D c
K
L
E
E1 Obsolete Product(s) - Obsolete Product(s)
PIN 1 IDENTIFICATION
1
7065588C
9/11
74VCX16244
DIM.
D
N
T
A
C
Ao
Bo
Ko
Po
P
8.7
13.1
1.5
3.9
11.9
MIN.
12.8
20.2
60
Tape & Reel TSSOP48 MECHANICAL DATA
mm.
TYP MIN.
MAX.
330
13.2
inch
TYP.
0.504
0.795
2.362
30.4
8.9
13.3
1.7
4.1
12.1
0.343
0.516
0.059
0.153
0.468
MAX.
12.992
0.519
1.197
0.350
0.524
0.067
0.161
0.476
10/11
74VCX16244
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
Obsolete Product(s) - Obsolete Product(s) its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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© 2003 STMicroelectronics - Printed in Italy - All Rights Reserved
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