4017BDM

Overview

The National Semiconductor 4017BDM is a CMOS decade counter/divider integrated circuit housed in a 40-pin ceramic dual in-line package (DIP). It operates on a nominal 5 V supply and supports ECL/TTL logic levels. The device is qualified for military temperature ranges, functioning reliably between -55 °C and +125 °C. It features ten decoded outputs and includes clock input, reset, and carry-out capabilities for cascading applications.

Feature Summary

• Provides ten mutually exclusive decoded outputs for sequential counting operations
• Supports direct reset functionality to initialize the count sequence
• Includes a ripple carry output terminal for multi-stage cascading configurations

Applications

• Military-grade digital timing and sequencing circuits
• High-reliability industrial control systems requiring wide temperature tolerance
• Space-constrained avionics and defense electronics utilizing ceramic DIP packaging

Procurement Notes

Verify that the specific procurement lot carries the required military screening level, such as MIL-STD-883 or 38534/38535 qualifications. Confirm the presence of the 'B' suffix indicates the specified military temperature range and ceramic construction. Ensure compatibility with existing system voltage levels and interface requirements before finalizing orders.

Selection Notes

Select this component when high reliability and radiation hardness are critical compared to standard commercial variants. The ceramic package offers superior thermal stability and hermetic sealing over plastic alternatives. Consider the 40-pin form factor if board space permits, as it provides robust mechanical integrity for harsh environments.

Part Context

This part belongs to the CD4000 series of CMOS logic devices, widely used in digital electronics. The 4017 variant specifically functions as a Johnson decade counter. The 'BDM' suffix typically denotes military qualification, ceramic material, and DIP packaging, distinguishing it from commercial plastic versions like the CD4017B.

Replacement Considerations

Equivalent parts include the MM54C4017 or similar military-grade CMOS decade counters from other manufacturers. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement also meets the required temperature range and packaging constraints.