Philips Semiconductors
Product specification
8-bit shift register with input flip-flops
74HC/HCT597
PIN DESCRIPTION
PIN NO.
SYMBOL
GND
Q
NAME AND FUNCTION
ground (0 V)
8
9
serial data output
10
11
12
13
14
MR
asynchronous reset input (active LOW)
SHCP
STCP
PL
shift clock input (LOW-to-HIGH, edge-triggered)
storage clock input (LOW-to-HIGH, edge-triggered)
parallel load input (active LOW)
serial data input
DS
15, 1, 2, 3, 4, 5, 6, 7 D0 to D7
parallel data inputs
16
VCC
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
December 1990
3