54LS156/BEA

Overview

The 54LS156/BEA is a dual 2-to-4-line decoder manufactured by Rochester Electronics, LLC. It features open-collector outputs and belongs to the LS TTL series. The device is housed in a ceramic DIP-16 package with glass-sealed construction. It operates within a temperature range of -55°C to 125°C and supports a maximum supply voltage of 5.5V.

Feature Summary

• Dual independent decoding channels
• Open-collector output configuration
• Ceramic metal-sealed hermetic packaging

Applications

• Military aerospace systems
• Defense electronics
• High-reliability industrial control

Procurement Notes

Verify the M38510/32602BEA marking on the component body to confirm authenticity. Ensure the supplier provides traceability documentation for the ceramic package and lead finish. Confirm compliance with QML Class Q or H standards if required for your specific application environment.

Selection Notes

Select this part when dual decoding functionality is required in harsh environments. The ceramic package offers superior environmental resistance compared to plastic alternatives. Verify that the open-collector outputs align with the load requirements of the downstream circuitry.

Part Context

This component is part of the SN54LS156 family, characterized for extended military temperature ranges. Rochester Electronics reproduces these devices using original manufacturer wafers to meet DLA standards. It serves as a replacement for legacy military-grade logic components in existing designs.

Replacement Considerations

Direct substitutes include other SN54LS156 variants from qualified manufacturers. Ensure pin compatibility and electrical specifications match before substitution.