54AC151 datasheet(2/9 Pages) NSC

2 / 9 page

Connection Diagrams

Pin Assignment

for DIP and Flatpak

Pin Assignment

for LCC

10027002

10027003

Truth Table

Inputs

Outputs

XXX

LLL

HHHI

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Functional Description

The ’AC/’ACT151 is a logic implementation of a single pole,

8-position switch with the switch position controlled by the

state of three Select inputs, S

0,S1,S2.

Both true and

complementary outputs are provided. The Enable input (E) is

active LOW. When it is not activated, the complementary

output is HIGH and the true output is LOW regardless of all

other inputs. The logic function provided at the output is:

Z=E

• (I

0 • S0 • S1 • S2 +I1 • S0 • S1 • S2 +

2 • S0 • S1 • S2 +I3 • S0 • S1 • S2 +I4 • S0 • S1 • S2 +

5 • S0 • S1 • S2 +I6 • S0 • S1 • S2 +I7 • S0 • S1 • S2)

The ’AC/’ACT151 provides the ability, in one package to

select from eight sources of data or control information. By

proper manipulation of the inputs, the ’AC/’ACT151 can

provide any logic function of four variables and its comple-

ment.

54AC151 Datasheet(PDF) 2 Page - National Semiconductor (TI)