Connection Diagrams

Functional Description

The ’AC/’ACT153 is a dual 4-input multiplexer. It can select

two bits of data from up to four sources under the control of

the common Select inputs (S

plexer circuits have individual active-LOW Enables (E

which can be used to strobe the outputs indepedently. When

the Enables (E

Z

mentation of a 2-pole, 4-position switch, where the position

of the switch is determined by the logic levels supplied to the

Select inputs. The logic equations for the outputs are shown

below.

Z

I

Z

I

Truth Table

Select

Inputs (a or b)

Output

Inputs

S

0

S

1

E

I

0

I

1

I

2

I

3

Z

XX

H

XXXX

L

L

LLL

X

X

X

L

L

L

L

H

XXX

H

H

L

L

XLX

X

L

H

L

L

XHX

X

H

L

H

L

X

XLX

L

L

H

L

X

XHX

H

H

H

L

XXX

L

L

H

H

L

XXX

H

H

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Pin Assignment

for DIP and Flatpak

DS100271-3

Pin Assignment

for LCC

DS100271-4

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