2000 Aug 15

3

Philips Semiconductors

Product specification

Octal D-type flip-flop with data enable;

positive-edge trigger

74AHC377; 74AHCT377

FUNCTION TABLE

See note 1.

Note

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;

X = don’t care;

↑ = LOW-to-HIGH CP transition.

ORDERING INFORMATION

PINNING

OPERATING MODES

INPUTS

OUTPUTS

ECP

load “1”

l

↑

hH

load “0”

l

↑

lL

hold (do nothing)

h

↑

X

no change

H

X

X

no change

TYPE NUMBER

PACKAGES

PINS

PACKAGE

MATERIAL

CODE

74AHC377D

20

SO

plastic

SOT163-1

74AHC377PW

20

TSSOP

plastic

SOT360-1

74AHCT377D

20

SO

plastic

SOT163-1

74AHCT377PW

20

TSSOP

plastic

SOT360-1

PIN

SYMBOL

DESCRIPTION

1

E

data enable input (active LOW)

2, 5, 6, 9, 12, 15, 16 and 19

flip-flop outputs

3, 4, 7, 8, 13, 14, 17 and 18

data inputs

10

GND

ground (0 V)

11

CP

clock input (LOW-to-HIGH, edge triggered)

20

DC supply voltage