74HC377 데이터 시트보기 (PDF) - Philips Electronics

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74HC377

Octal D-type flip-flop with data enable; positive-edge trigger

Philips Electronics 

Philips Semiconductors

Octal D-type flip-flop with data enable;

positive-edge trigger

Product specification

74HC/HCT377

FUNCTION TABLE

OPERATING

MODES

load “1”

load “0”

hold (do nothing)

INPUTS

CP E Dn

↑

l

h

↑

l

l

↑hX

XHX

OUTPUTS

Qn

H

L

no change

no change

Notes

1. H = HIGH voltage level

h = HIGH voltage level one set-up time

prior to the LOW-to-HIGH CP transition

L = LOW voltage level

I = LOW voltage level one set-up time

prior to the LOW-to-HIGH CP transition

↑ = LOW-to-HIGH CP transition

X = don’t care

Fig.4 Functional diagram.

December 1990

Fig.5 Logic diagram.

4

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