HEF4021BT 8-Bit Static Shift Register SOP-16
Prices updated: 12 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 UGE | HEF4021BT 8-bit static shift register SOP-16 | 22.8 EGP | View in store |
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Lowest price recorded: 22.8 EGP
About this product
The HEF4021BT is a CMOS 8-bit static shift register that converts parallel inputs into a serial output. It has parallel data inputs D0 to D7 loaded asynchronously through a parallel-load pin, plus buffered parallel outputs from the last three stages. It is used to read many digital inputs such as switches with few microcontroller pins.
Specifications
- Type
- 8-bit parallel-in, serial-out shift register
- Logic family
- CMOS (HEF4000B series)
- Serial data input
- DS
- Clock input
- CP
- Parallel load
- PL, asynchronous, active high
- Parallel inputs
- D0 to D7
- Package
- SOP-16
Frequently asked questions
What is the price of HEF4021BT 8-Bit Static Shift Register SOP-16 in Egypt?
HEF4021BT 8-Bit Static Shift Register SOP-16 currently costs 22.8 EGP in Egypt.
Where can I buy HEF4021BT 8-Bit Static Shift Register SOP-16 in Egypt?
HEF4021BT 8-Bit Static Shift Register SOP-16 is available from UGE. Compare the offers above to find the best price.
How do I read 8 switches with an Arduino?
Pulse PL high then low to latch the switch states into the register, then clock the bits out one at a time through DS while the MCU reads them. Chain more devices by feeding Q7 into the next DS input.
What should I do with unused inputs?
As a CMOS device, unused inputs should not be left floating. Tie them to VDD or VSS, and check the supply range in the datasheet before connecting to a 5 V board.
