CD4021BEG4

Shift Registers Overview

The CD4021BEG4 is an 8-stage static shift register from Texas Instruments' 4000B CMOS logic family. It features a synchronous serial data input, a clock input, and an asynchronous active-high parallel load input. The device includes eight asynchronous parallel data inputs and buffered parallel outputs for the last three stages. It operates within a supply voltage range of 3V to 18V and supports through-hole mounting in a 16-pin DIP package.

Shift Registers Feature Summary

• Supports parallel-to-serial and serial-to-parallel data conversion functions
• Features asynchronous active-high parallel load capability for immediate data entry
• Provides buffered parallel outputs on the final three stages for simultaneous readout

Shift Registers Applications

• Parallel-to-serial data conversion interfaces
• Serial-to-parallel expansion circuits
• Game controller keypad scanning systems

Shift Registers Procurement Notes

Verify the 'G4' suffix indicates lead-free composition and RoHS compliance per Texas Instruments standards. Confirm the package type matches the required 16-pin DIP form factor. Ensure the operating temperature range aligns with the specific industrial or commercial grade requirements of the target application environment.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel loading is required in a CMOS design. It is suitable for low-power applications due to its static operation. Consider the 16-pin DIP package for prototyping or through-hole manufacturing needs. Verify that the input voltage levels are compatible with the driving logic family.

Shift Registers Part Context

This part belongs to the CD4000B series of CMOS digital integrated circuits manufactured by Texas Instruments. The CD4021B variant specifically provides 8-bit shifting capabilities. The G4 designation typically signifies environmental compliance, including lead-free terminations and adherence to RoHS directives established by the manufacturer.

Shift Registers Replacement Considerations

Compatible substitutes include the standard CD4021B and the automotive-grade CD4021BQDRQ1. Other manufacturers offer equivalent parts such as the HEF4021BT. Ensure pin compatibility and electrical specifications match before substitution.