Datasheet

SN74AHC157 . . . D,DB,DGV,N,NS,
OR PW PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4A
4B
NC
4Y
3A
1B
1Y
NC
2A
2B
SN54AHC157 . . . FK PACKAGE
(TOP VIEW)
1A
A/B
NC
3Y
3B
V
G
2Y
GND
NC
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A
/B
1A
1B
1Y
2A
2B
2Y
GND
V
CC
G
4A
4B
4Y
3A
3B
3Y
NC − No internal connection
SN74AHC157 . . . RGY PACKAGE
(TOP VIEW)
1 16
8 9
2
3
4
5
6
7
15
14
13
12
11
10
G
4A
4B
4Y
3A
3B
1A
1B
1Y
2A
2B
2Y
A/B
3Y
V
GND
CC
SN54AHC157 . . . J or W PACKAGE
SN54AHC157
SN74AHC157
www.ti.com SCLS345J –MAY 1996–REVISED JUNE 2013
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
Check for Samples: SN54AHC157, SN74AHC157
1
FEATURES
• Operating Range 2-V to 5.5-V • ESD Protection Exceeds JESD 22
• Latch-Up Performance Exceeds 250 mA Per – 2000-V Human-Body Model (A114-A)
JESD 17
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DESCRIPTION
These quadruple 2-line to 1-line data selectors/multiplexers are designed for 2-V to 5.5-V V
CC
operation.
The ’AHC157 devices feature a common strobe (G) input. When the strobe is high, all outputs are low. When the
strobe is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The devices
provide true data.
FUNCTION TABLE
INPUTS OUTP
UT
G A/B A B Y
H X X X L
L L L X L
L L H X H
L H X L L
L H X H H
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.
Copyright © 1996–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.