Infinity PS212W Service Manual page 33

PS212W subwoofer
Philips Semiconductors
8-bit parallel-in/serial-out shift register
PIN DESCRIPTION
PIN NO.
1
7
9
2
8
10
11, 12, 13, 14, 3, 4, 5, 6
15
16
Fig.1 Pin configuration.
SYMBOL NAME AND FUNCTION
PL asynchronous parallel load input (active LOW)
Q complementary output from the last stage
7
Q serial output from the last stage
7
CP clock input (LOW-to-HIGH edge-triggered)
GND ground (0 V)
D serial data input
s
D to D parallel data inputs
0 7
CE clock enable input (active LOW)
V positive supply voltage
CC
Fig.2 Logic symbol.
32
Product specification
74HC/HCT165
Fig.3 IEC logic symbol.