July 1998
54AC157 • 54ACT157
Quad 2-Input Multiplexer
General Description
Features
n ICC and IOZ reduced by 50%
n Outputs source/sink 24 mA
n ’ACT157 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’AC157: 5962-89539
The ’AC/’ACT157 is a high-speed quad 2-input multiplexer.
Four bits of data from two sources can be selected using the
common Select and Enable inputs. The four outputs present
the selected data in the true (noninverted) form. The ’AC/
’ACT157 can also be used as a function generator.
— ’ACT157: 5962-89688
Logic Symbols
IEEE/IEC
DS100272-1
DS100272-2
Pin Names
Description
I
0a–I0d
1a–I1d
Source 0 Data Inputs
I
Source 1 Data Inputs
Enable Input
Select Input
E
S
Za–Zd
Outputs
Connection Diagrams
Pin Assignment
for DIP and Flatpak
Pin Assignment
for LCC
DS100272-3
DS100272-4
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© 1998 National Semiconductor Corporation
DS100272
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