4022BDC

Overview

The National Semiconductor 4022BDC is a CMOS divide-by-8 synchronous counter operating in the up direction. It utilizes a PDSO16 package and belongs to the standard logic family. The device functions as a sequential circuit element for digital counting applications, providing decoded outputs corresponding to the count sequence.

Feature Summary

• Synchronous operation with up-counting direction
• CMOS technology implementation
• Divide-by-8 decoding functionality

Applications

• Digital frequency division circuits
• Sequential state machine implementations
• Binary-to-decimal conversion stages

Procurement Notes

Verify the manufacturer origin carefully, as the 4022BDC designation was originally associated with National Semiconductor but is widely produced by various foundries including LG Semicon. Confirm the specific datasheet revision and pinout compatibility with your design requirements before procurement, as legacy components may have multiple sourcing options with varying specifications.

Selection Notes

Select this component when a synchronous divide-by-8 counter is required within a CMOS logic system. Ensure the design supports the PDSO16 surface-mount package constraints. Verify that the supply voltage range and input signal levels are compatible with the specific CMOS variant being sourced, as performance characteristics can vary between original and third-party manufacturers.

Part Context

This component is part of the broader 4000-series CMOS logic family, which defines standard electrical characteristics for digital integrated circuits. The 4022 series specifically provides decoded outputs for eight distinct states, serving as a fundamental building block for timing and control logic in electronic systems requiring precise sequential operations.