74VHC238

2/12

Figure 2: Input Equivalent Circuit

Table 2: Pin Description

Table 3: Truth Table

X : Don’t care

Figure 3: Logic Diagram

This logic diagram has not be used to estimate propagation delays

PIN N°

SYMBOL

NAME AND FUNCTION

1, 2, 3

A, B, C

Address Inputs

4, 5

G2A, G2B

Enable Inputs

6

G1

Enable Input

15, 14, 13,

12, 11, 10, 9,

7

Y0 to Y7

Outputs

8

GND

Ground (0V)

16

Positive Supply Voltage

INPUTS

OUTPUTS

ENABLE

SELECT

G2B

G2A

G1

C

B

A

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

X

X

L

X

X

X

LLLLLLLL

X

H

XXXX

LLLLLLLL

H

XXXXX

LLLLLLLL

LL

H

LLL

H

LLLLLLL

LL

H

L

L

H

L

H

LLLLLL

LL

H

L

H

L

LL

H

LLLLL

LL

H

L

H

H

LLL

H

LLLL

LL

H

H

LL

LLLL

H

LLL

LL

H

H

L

H

LLLLL

H

L

L

LL

H

H

H

L

LLLLLL

H

L

L

L

HHHH

LLLLLLL

H