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HCF4021 Datasheet(PDF) 3 Page - STMicroelectronics

Part # HCF4021
Description  Asynchronous parallel input or synchronous serial-in/serial-out 8-stage static shift register
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

HCF4021 Datasheet(HTML) 3 Page - STMicroelectronics

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DocID008216 Rev 3
3/13
HCF4021
Pin information
13
1
Pin information
Figure 1. Pin connections (top view)
Table 2. Pin description
Pin number
Symbol
Name and function
7, 6, 5, 4, 13, 14, 15, 1
PI-1 to PI-8
Parallel input
11
SERIAL IN
Serial input
9
PARALLEL/SERIAL
CONTROL
Parallel/serial input control
10
CLOCK
Clock input
2, 3, 12
Q6, Q7, Q8
Buffered outputs
8VSS
Negative supply voltage
16
VDD
Positive supply voltage


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