QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
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SN54AHC157 SN74AHC157
SCLS345J – MAY 1996 – REVISED JUNE 2013
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MUL...
Description
www.ti.com
SN54AHC157 SN74AHC157
SCLS345J – MAY 1996 – REVISED JUNE 2013
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
Check for Samples: SN54AHC157, SN74AHC157
FEATURES
1
Operating Range 2-V to 5.5-V Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101)
SN54AHC157 . . . J or W PACKAGE SN74AHC157 . . . D,DB,DGV,N,NS,
OR PW PACKAGE (TOP VIEW)
SN74AHC157 . . . RGY PACKAGE (TOP VIEW)
SN54AHC157 . . . FK PACKAGE (TOP VIEW)
VCC
G
NC
A/B
1A
VCC
A/B
A /B 1 1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7 GND 8
16 VCC 15 G 14 4A 13 4B 12 4Y 11 3A 10 3B 9 3Y
1
1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7
8
16
15 G 14 4A 13 4B 12 4Y 11 3A 10 3B
9
3 2 1 20 19
1B 4
18 4A
1Y 5
17 4B
NC 6
16 NC
2A 7
15 4Y
2B 8
14 3A
9 10 11 12 13
3B
3Y
NC
GND
2Y
3Y
GND
NC − No internal connection
DESCRIPTION
These quadruple 2-line to 1-line data selectors/multiplexers are designed for 2-V to 5.5-V VCC 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
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