JBL ES250PW, Service Manual, Page: 34 / 56

Philips Semiconductors Product specification
8-bit parallel-in/serial-out shift register 74HC/HCT165
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1 PL asynchronous parallel load input (active LOW)
7 Q
7
complementary output from the last stage
9 Q
7
serial output from the last stage
2 CP clock input (LOW-to-HIGH edge-triggered)
8 GND ground (0 V)
10 D
s
serial data input
11, 12, 13, 14, 3, 4, 5, 6 D
0
to D
7
parallel data inputs
15 CE clock enable input (active LOW)
16 V
CC
positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.
ES250PW
33
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