CD4021
Layout symbol
8-bit parallel-in, serial-out shift register, similar to the CD4014 but loading its parallel inputs immediately without waiting for a clock. Popular for reading many buttons with few microcontroller pins, as in the classic NES controller.
integrated circuit
IC
chip
cd4000
4000 series
logic
CMOS
4021
HEF4021
MC14021
Details
- Reference Character
- U
- Default Value
- —
- Author
- Circuit Canvas
- License
- Circuit Canvas Parts License
- Library
- Circuit Canvas Library
