January 1995

4

Philips Semiconductors

Product specification

Octal transparent latch with 3-state outputs

HEF40373B

MSI

FUNCTION TABLE

Notes

1. H = HIGH state (the more positive voltage)

h = HIGH state (one set-up time prior to the HIGH-to-LOW enable transition)

L = LOW state (the less positive voltage)

I = LOW state (one set-up time prior to the HIGH-to-LOw enable transition)

Z = high impedance OFF-state

OPERATING MODES

INPUTS

INTERNAL

REGISTER

OUTPUTS

EO

E

enable & read register

LH

L

L

L

LH

H

H

H

latch & read register

LL

I

L

L

LL

h

H

H

latch register & disable outputs

HL

I

L

Z

HL

h

H

Z