4012BDM

Overview

The 4012BDM is a dual 4-input NAND gate integrated circuit manufactured by National Semiconductor. It utilizes CMOS technology and is housed in a 14-lead ceramic dual in-line package (CDIP14). The device operates within a supply voltage range of 5 V to 15 V. It is designed for military-grade performance, supporting an operating temperature range from -55 °C to 125 °C. The component features through-hole terminals with tin/lead plating and has a peak reflow temperature of 250 °C.

Feature Summary

• Dual 4-input NAND logic function implemented in CMOS technology
• Hermetically sealed ceramic dual in-line packaging for environmental durability
• Military-grade qualification supporting extreme temperature operations

Applications

• Military aerospace electronic systems requiring radiation-hardened or high-reliability logic
• Industrial control environments subject to wide thermal fluctuations
• Defense communication equipment utilizing standard TTL-compatible logic levels

Procurement Notes

Verify the specific revision level and lot traceability documentation upon procurement. Confirm that the ceramic package integrity meets MIL-STD-883 requirements for hermeticity. Ensure the supplier provides appropriate handling instructions for leaded components to maintain terminal plating quality during installation.

Selection Notes

Select this component when a hermetically sealed, military-grade NAND gate is required for high-temperature stability. The CDIP14 package offers superior thermal and mechanical robustness compared to plastic equivalents. Verify compatibility with existing 5 V to 15 V power rails and ensure PCB layout accommodates the DIP14 footprint dimensions.

Part Context

This part belongs to the 4000-series CMOS logic family, specifically the 4012 quad 2-input NAND gate variant adapted for dual 4-input functionality in a military specification format. It serves as a fundamental building block for complex digital logic circuits in harsh environments where standard commercial-grade components would fail due to thermal or physical stress.

Replacement Considerations

Direct replacements must match the CDIP14 ceramic package and military temperature rating. Equivalent parts include other manufacturers' 4012 variants qualified under MIL-STD-883. Verify pinout compatibility and ensure the substitute maintains the same 5 V to 15 V operating voltage range.