CD4021BCM

Shift Registers Overview

The CD4021BCM is an 8-stage parallel input/serial output shift register manufactured by Fairchild Semiconductor. It operates within a supply voltage range of 3V to 15V and supports an operating temperature range of -55°C to +125°C. The device features high noise immunity, low power consumption, and TTL compatibility. It utilizes a 16-lead Small Outline Integrated Circuit (SOIC) package conforming to JEDEC MS-012 standards.

Shift Registers Feature Summary

• Provides parallel-to-serial data conversion with asynchronous jam inputs for each stage
• Features symmetrical output characteristics with equal source and sink current capabilities
• Includes static discharge protection diodes on all inputs connected to VDD and VSS

Shift Registers Applications

• Data acquisition systems requiring serial interface expansion
• Industrial control logic utilizing parallel input scanning
• General-purpose digital signal processing applications

Shift Registers Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or authorized successor entities. Confirm the specific SOIC package variant matches the M16A designation. Ensure environmental compliance documentation aligns with project requirements. Validate that the component lot meets specified temperature grade standards for operational reliability.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel load capability is required. Consider the wide supply voltage range for flexible power design. Evaluate the package constraints against PCB layout limitations. Assess thermal management needs based on the specified power dissipation ratings for the SOIC form factor.

Shift Registers Part Context

This part belongs to the CD4000 series of CMOS logic devices. It serves as a fundamental building block for sequential logic circuits. The device complements other standard logic families by providing robust performance across varying industrial temperature conditions. Its design emphasizes reliability in harsh electrical environments.

Shift Registers Replacement Considerations

The CD4021BCN is available in a PDIP package. Verify pinout compatibility before substitution. Check if the alternative package meets mechanical clearance requirements. Ensure electrical specifications remain identical for functional equivalence.