74AHC595 查看數據表（PDF） - Philips Electronics

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74AHC595

8-bit serial-in/serial or parallel-out shift register with output latches; 3-state

Philips Electronics 

Philips Semiconductors

8-bit serial-in/serial or parallel-out shift

register with output latches; 3-state

Product specification

74AHC595; 74AHCT595

FUNCTION TABLE

See note 1.

INPUT

SHCP STCP OE

MR

DS

X

X

L

L

X

X

↑

L

L

X

X

X

H

L

X

↑

X

L

H

H

X

↑

L

H

X

↑

↑

L

H

X

Note

1. H = HIGH voltage level;

L = LOW voltage level;

↑ = LOW-to-HIGH transition;

↓ = HIGH-to-LOW transition;

X = don’t care;

NC = no change;

Z = high impedance OFF-state.

OUTPUT

Q7’

Qn

L

NC

L

L

L

Z

Q6’

NC

NC

Qn’

Q6’

Qn’

FUNCTION

a LOW level on MR only affects the shift registers

empty shift register loaded into storage register

shift register clear. Parallel outputs in high impedance

OFF-state.

logic HIGH level shifted into shift register stage 0.

Contents of all shift register stages shifted through, e.g.

previous state of stage 6 (internal Q6’) appears on the

serial output (Q7’).

contents of shift register stages (internal Qn’) are

transferred to the storage register and parallel output

stages

contents of shift register shifted through. Previous

contents of the shift register is transferred to the storage

register and the parallel output stages.

ORDERING INFORMATION

TYPE NUMBER

74AHC595D

74AHC595PW

74AHCT595D

74AHCT595PW

TEMPERATURE

RANGE

−40 to +125 °C

PINS

16

16

16

16

PACKAGES

PACKAGE

SO

TSSOP

SO

TSSOP

MATERIAL

plastic

plastic

plastic

plastic

CODE

SOT109-1

SOT403-1

SOT109-1

SOT403-1

2000 Mar 15

3

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