MC14021BDG

Shift Registers Overview

The MC14021BDG is an 8-bit static shift register from the MC14021B series, manufactured by onsemi using CMOS technology. It features asynchronous parallel input and serial output capabilities within a single monolithic structure. The device operates with a supply voltage range of 3.0 Vdc to 18.0 Vdc and supports ambient temperatures from -55°C to +125°C. Propagation delay times vary between 230 ns and 800 ns depending on voltage conditions. It is housed in a SOIC-16 package and includes double diode input protection.

Shift Registers Feature Summary

• Asynchronous parallel data loading capability
• Serial output shifting functionality
• High noise immunity design
• Low power consumption operation

Shift Registers Applications

• Parallel-to-serial data conversion
• Synchronous parallel input data queueing
• Asynchronous parallel input data queueing
• General purpose register applications

Shift Registers Procurement Notes

Verify the specific ordering suffix to confirm packaging type, as the base part number may correspond to tube or tape-and-reel variants. Confirm RoHS compliance and Pb-Free status through official documentation. Ensure the selected variant matches the required automotive or industrial qualification standards if applicable. Cross-reference the datasheet revision date for accurate electrical characteristics.

Shift Registers Selection Notes

Select this component when asynchronous parallel loading is required alongside serial shifting. Compare against the MC14014B if synchronous parallel input is needed instead. Consider the operating temperature range and supply voltage requirements relative to the target application environment. Verify pin compatibility with existing CD4021B designs if a direct replacement is intended.

Shift Registers Part Context

This component belongs to the MC14021B family of 8-bit static shift registers. It serves as a pin-for-pin replacement for the CD4021B standard. The device is part of the broader MC140xx logic series, designed for general-purpose digital logic applications requiring reliable data storage and shifting functions in CMOS systems.

Shift Registers Replacement Considerations

The MC14021B is a pin-for-pin replacement for the CD4021B. Designers should verify that any substitute maintains the same asynchronous parallel input behavior and serial output configuration to ensure circuit compatibility without modification.