4029BDC

Overview

The National Semiconductor 4029BDC is a CMOS presettable binary/decade up/down counter belonging to the 4000 series. It features synchronous operation with positive edge triggering and supports bidirectional counting. The device offers multi-package parallel clocking for high-speed output response or ripple clocking for slower inputs. It includes 'Preset Enable' and individual 'Jam' inputs, providing flexible configuration options for various digital logic applications.

Feature Summary

• Supports both binary and decade up/down counting modes
• Features synchronous positive edge triggered operation
• Includes dedicated preset enable and individual jam inputs

Applications

• Digital frequency division circuits
• Event counting systems
• Timing sequence generation

Procurement Notes

Verify the specific suffix 'BDC' against official National Semiconductor documentation to confirm package type and temperature rating. Ensure compatibility with existing board layouts and voltage requirements before procurement.

Selection Notes

Select this component when a synchronous up/down counter with preset capabilities is required. Consider the 4000 series CMOS characteristics regarding power consumption and speed relative to other logic families.

Part Context

This part is part of the CD4029 family of presettable counters. It shares functional similarities with counterparts from other manufacturers like Texas Instruments and Fairchild, maintaining standard pinouts and logical operations within the 4000 series ecosystem.

Replacement Considerations

Compatible substitutes include CD4029 variants from Texas Instruments and Fairchild Semiconductor. Verify pin compatibility and electrical specifications before substitution.