Philips Semiconductors
Product specification
8-bit serial-in, serial or parallel-out shift
register with output latches; 3-state
FUNCTION TABLE
See note 1.
INPUT
SH_CP ST_CP
X
X
X
↑
X
↑
X
X
OE
L
L
H
L
MR
L
L
L
H
DS
X
X
X
H
OUTPUT
74HC595; 74HCT595
FUNCTION
Q7’
L
L
L
Q6’
Qn
n.c.
L
Z
n.c.
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
X
↑
L
H
X
n.c.
Qn’
↑
↑
L
H
X
Q6’
Qn’
Note
1. H = HIGH voltage level;
L = LOW voltage level;
↑
= LOW-to-HIGH transition;
↓
= HIGH-to-LOW transition;
Z = high-impedance OFF-state;
n.c. = no change;
X = don’t care.
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
74HC595N
74HCT595N
74HC595D
74HCT595D
74HC595DB
74HCT595DB
74HC595PW
74HCT595PW
74HC595BQ
74HCT595BQ
TEMPERATURE
RANGE
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
−40
to +125
°C
PINS
16
16
16
16
16
16
16
16
16
16
PACKAGE
DIP16
DIP16
SO16
SO16
SSOP16
SSOP16
TSSOP16
TSSOP16
DHVQFN16
DHVQFN16
MATERIAL
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
plastic
CODE
SOT38-4
SOT38-4
SOT109-1
SOT109-1
SOT338-1
SOT338-1
SOT403-1
SOT403-1
SOT763-1
SOT763-1
2003 Jun 25
3
PHILIPS [ NXP SEMICONDUCTORS ]
