4018BDM

Overview

The CD4018BDM is a synchronous decade counter integrated circuit manufactured by National Semiconductor. It utilizes CMOS technology and is housed in a 16-pin ceramic flatpack (DFP) package. The device operates within a supply voltage range of 5V to 15V and supports an extended industrial temperature range from -55°C to +125°C. It features a single functional unit with load/preset inputs and is designed for up-counting operations. The component meets MIL-STD-883 Class C screening standards, indicating suitability for high-reliability applications.

Feature Summary

• Synchronous decade counting operation with up-count direction
• High-temperature capability suitable for demanding environments
• Military-grade reliability through MIL-STD-883 Class C screening

Applications

• Digital counting systems requiring military-grade reliability
• Frequency division circuits in aerospace electronics
• Time-base generation in harsh environment instrumentation

Procurement Notes

Verify the specific suffix 'BDM' against the manufacturer's official documentation to confirm the ceramic flatpack package and lead finish specifications. Ensure that the MIL-STD-883 Class C screening level is explicitly stated in the purchase order requirements, as this denotes a specific quality tier distinct from commercial variants. Confirm RoHS compliance status, as indicated by the source data, prior to integration into environmentally restricted assemblies.

Selection Notes

Select this component when a synchronous decade counter with military qualification is required. The ceramic flatpack package provides robustness for high-temperature applications exceeding standard plastic package limits. Consider the 5V to 15V operating range for compatibility with various logic families. Verify that the 16-pin footprint matches the PCB design constraints and that the synchronous input requirements align with the system clock architecture.

Part Context

This part belongs to the CD4000 series of CMOS digital logic devices produced by National Semiconductor. The CD4018 specifically functions as a four-stage binary ripple counter configured for decimal (decade) counting. It is part of a broader family of logic components designed for general-purpose digital applications, distinguished here by its specialized military screening and ceramic packaging options.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference material. Cross-reference with other National Semiconductor or Texas Instruments decade counters only if they explicitly match the MIL-STD-883 Class C screening and ceramic flatpack package dimensions.