CD4021BNSR

Shift Registers Overview

The CD4021BNSR is an AC CMOS octal 3-state shift register manufactured by Texas Instruments. It features a 16-pin SOIC package and operates within a supply voltage range of 3 V to 18 V. The device supports serial-to-serial/parallel data conversion with asynchronous reset functionality. It is designed for surface-mount installation and functions reliably across a temperature range of -55°C to +125°C.

Shift Registers Feature Summary

• Octal 3-state shift register architecture
• Serial-to-serial or serial-to-parallel data conversion capability
• Asynchronous reset input for immediate clearing

Shift Registers Applications

• Data acquisition systems requiring parallel output from serial input
• Industrial control interfaces for status monitoring
• Consumer electronics utilizing low-power logic shifting

Shift Registers Procurement Notes

Verify the specific suffix 'NSR' corresponds to the SOIC-16 tape-and-reel packaging configuration. Confirm that the AC CMOS logic family designation aligns with system timing requirements. Ensure the operating voltage range matches the target application's power supply specifications before finalizing procurement orders.

Shift Registers Selection Notes

Select this component when an octal shift register with three-state outputs is required. The AC CMOS technology offers improved speed over standard CD4000B series devices while maintaining low power consumption. The wide supply voltage range provides flexibility in various power environments.

Shift Registers Part Context

This part belongs to the Texas Instruments CD4021B family of octal 3-state shift registers. It is part of the broader AC CMOS logic product line, which provides enhanced performance characteristics compared to legacy HC or HCT families. The NSR suffix indicates the specific reel packaging format for automated assembly processes.

Shift Registers Replacement Considerations

Direct pin-compatible replacements within the same manufacturer include other variants of the CD4021B series. Cross-manufacturer equivalents should be verified against the 16-pin SOIC footprint and AC CMOS electrical specifications.