Texas Instruments SN74LVC157AD, SN74LVC157ADBLE, SN74LVC157ADBR, SN74LVC157ADR, SN74LVC157APWLE Datasheet
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SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
D
EPIC
(Enhanced-Performance Implanted
CMOS) Submicron Process
D
Typical V
< 0.8 V at V
D
Typical V
> 2 V at V
D
Inputs Accept Voltages to 5.5 V
D
ESD Protection Exceeds 2000 V Per
(Output Ground Bounce)
OLP
= 3.3 V, TA = 25°C
CC
(Output VOH Undershoot)
OHV
= 3.3 V, TA = 25°C
CC
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D
Latch-Up Performance Exceeds 250 mA Per
D, DB, OR PW PACKAGE
(TOP VIEW)
A/B
1A
1B
1Y
2A
2B
2Y
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
V
CC
G
4A
4B
4Y
3A
3B
9
3Y
JESD 17
D
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
This quadruple 2-line to 1-line data selector/multiplexer is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC157A features a common strobe (G
the strobe is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The device
provides true data.
) input. When the strobe is high, all outputs are low. When
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators
in a mixed 3.3-V/5-V system environment.
The SN74LVC157A is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
G A/B A B
H X X X L
L LLX L
LLHX H
LHXL L
LHXH H
OUTPUT
Y
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.
EPIC is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1998, Texas Instruments Incorporated
1
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
logic symbol
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
†
15
A/B
1A
1B
2A
2B
3A
3B
4A
4B
G
1
2
3
5
6
11
10
14
13
EN
G1
1
1
MUX
logic diagram (positive logic)
2
1A
3
1B
12
4
1Y
7
2Y
9
3Y
4Y
4
1Y
2A
2B
3A
3B
4A
4B
A/B
5
7
12
2Y
9
3Y
4Y
6
11
10
14
13
15
G
1
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
VCCSuppl
oltage
V
IOHHigh-level output current
mA
IOLLow-level output current
mA
SN74LVC157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCAS292G – JANUARY 1993 – REVISED OCTOBER 1998
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
Input voltage range, V
Output voltage range, V
Input clamp current, I
Output clamp current, I
Continuous output current, I
Continuous current through V
Package thermal impedance, θ
–0.5 V to 6.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
(see Note 1) –0.5 V to 6.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
(see Notes 1 and 2) –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
(VI < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IK
(VO < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OK
±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
or GND ±100 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
(see Note 3): D package 113°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JA
†
DB package 131°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package 149°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
†
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.
NOTES: 1. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The value of VCC is provided in the recommended operating conditions table.
3. The package thermal impedance is calculated in accordance with JESD 51.
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
recommended operating conditions (see Note 4)
MIN MAX UNIT
pp
y v
V
V
V
V
∆t/∆v Input transition rise or fall rate 0 10 ns/V
T
NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
High-level input voltage
IH
Low-level input voltage
IL
Input voltage 0 5.5 V
I
Output voltage 0 V
O
p
p
Operating free-air temperature –40 85 °C
A
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
Operating 1.65 3.6
Data retention only 1.5
VCC = 1.65 V to 1.95 V 0.65 × V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V 2
VCC = 1.65 V to 1.95 V 0.35 × V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V 0.8
VCC = 1.65 V –4
VCC = 2.3 V –8
VCC = 2.7 V –12
VCC = 3 V –24
VCC = 1.65 V 4
VCC = 2.3 V 8
VCC = 2.7 V 12
VCC = 3 V 24
CC
1.7
0.7
CC
V
CC
V
V
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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