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HD74AC157 - Quad 2-Input Multiplexer

General Description

The HD74AC157 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.

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HD74AC157 Quad 2-Input Multiplexer Description The HD74AC157 is a high-speed quad 2-input multiplexer. Four bits of data from two sources can be selected using the common...

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r. 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 HD74AC157 can also be used as a function generator. Feature • Outputs Source/Sink 24 mA Pin Arrangement S 1 I0a 2 I1a 3 Za 4 I0b 5 I1b 6 Zb 7 GND 8 (Top view) 16 VCC 15 E 14 I0c 13 I1c 12 Zc 11 I0d 10 I1d 9 Zd HD74AC157 Logic Symbol E I0a I1a I0b I1b I0c I1c Iod I1d S Za Zb Zc Zd Pin Names I0a to I0d I1a to I1d E S Za to Zd Source 0 Data Inputs Source 1 Data Inputs Enable Input Select Input Outputs Functional Description The HD74AC157 is a quad 2-inp