M74HC148

2/11

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

X : Don’t Care

LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays

PIN No

SYMBOL

NAME AND FUNCTION

9, 7, 6

Data Outputs

10, 11, 12,

13, 1, 2, 3, 4

0 to 7

Data Inputs

15

EO

Enable Output

5

EI

Enable Input

14

GS

Priority Flag Output

8

GND

Ground (0V)

16

Positive Supply Voltage

INPUTS

OUTPUTS

E1

01234567

A2

A1

A0

GS

E0

HXXXXXXXX

H

H

H

H

H

L

HHHHHHHHHH

HH

L

L

XXXXXXX

L

L

L

L

L

H

L

XXXXXX

L

H

L

L

H

L

H

L

XXXXX

L

H

H

L

H

L

L

H

L

XXXX

L

H

H

H

L

H

H

L

H

L

X

X

X

L

HHHHH

L

L

L

H

L

X

X

L

HHHHHH

L

H

L

H

L

X

L

HHHHHHHH

L

L

H

L

L

HHHHHHHHH

H

L

H