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74HC237

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Product data sheet

Rev. 7 — 29 January 2016

4 of 17

Nexperia

74HC237

3-to-8 line decoder, demultiplexer with address latches

5.2 Pin description

6.

Functional description

[1]

H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.

Table 2.

Pin description

Symbol

Pin

Description

A0 to A2

1, 2, 3

data input

LE

4

latch enable input (active LOW)

E1

5

data enable input 1 (active LOW)

E2

6

data enable input 2 (active HIGH)

Y0 to Y7

15, 14, 13, 12, 11, 10, 9, 7 output

GND

8

ground (0 V)

VCC

16

supply voltage

Table 3.

Function table

Enable

Input

Output

LE

E1

E2

A0

A1

A2

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

HL

HX

X

X

stable

XH

XXX

XL

L

L

L

L

L

L

L

X

X

LX

X

X

LL

LLL

LLL

LL

H

LL

LH

L

LLL

LLL

H

L

LLH

LLL

LLL

LH

LLL

H

LL

LLL

H

H

LLL

LH

L

LLL

LL

H

LL

LLH

LLL

HL

HL

L

L

L

L

HL

L

LH

H

LL

LLL

LH

L

H

H

H

LL

LLL

LLH