MC14021BDR2G

Shift Registers Overview

The MC14021BDR2G is an 8-bit static shift register from the onsemi 4000B CMOS logic family, housed in a 16-pin SOIC package. It features asynchronous parallel input and serial output capabilities, constructed with MOS P-channel and N-channel enhancement mode devices. The device operates within a supply voltage range of 3.0 Vdc to 18.0 Vdc and supports ambient temperatures from -55°C to +125°C. It includes double diode input protection and provides Q outputs from the sixth, seventh, and eighth stages.

Shift Registers Feature Summary

• Asynchronous parallel data loading combined with serial output shifting
• Full static operation ensuring stable states without continuous clocking
• Double diode input protection for enhanced noise immunity
• External access to internal stage outputs (Q6, Q7, Q8)

Shift Registers Applications

• Parallel-to-serial data conversion circuits
• Synchronous and asynchronous parallel input data queueing
• General-purpose register applications requiring low power consumption

Shift Registers Procurement Notes

Verify that the ordering suffix 'DR2G' corresponds to the SOIC-16 tape and reel packaging configuration as specified in the manufacturer's documentation. Confirm compliance with RoHS standards and lead-free requirements. Ensure the specific revision level matches the design specifications, as manufacturing updates may occur without functional changes.

Shift Registers Selection Notes

Select this component when asynchronous parallel loading is required alongside serial shifting functionality. It serves as a pin-for-pin replacement for the CD4021B. Consider the NLV prefix variant if automotive qualification and PPAP capability are necessary for the application environment.

Shift Registers Part Context

This part belongs to the MC14014B/MC14021B series of 8-bit static shift registers manufactured by onsemi. While the MC14014B offers synchronous parallel input, the MC14021B specifically provides asynchronous parallel input. Both share identical electrical characteristics and package options within the 4000B CMOS logic family.

Shift Registers Replacement Considerations

The datasheet explicitly identifies the MC14021B as a pin-for-pin replacement for the CD4021B.