JM38510/36001BEA

Overview

The JM38510/36001BEA is a military-grade priority encoder manufactured by Texas Instruments, belonging to the SN54LS148 series. It implements 10-line to 4-line and 8-line to 3-line encoding functions within a single 16-pin ceramic dual in-line package (CDIP). The device operates reliably across an extended temperature range of -55 °C to 125 °C. Key electrical characteristics include a maximum propagation delay of 25 ns and a low-level output current capability of 48 mA. It utilizes standard TTL-compatible logic levels for input recognition and provides active-low outputs.

Feature Summary

• Provides simultaneous 10-to-4 and 8-to-3 priority encoding capabilities
• Features high fan-out drive strength suitable for demanding loads
• Constructed with hermetically sealed ceramic packaging for harsh environments

Applications

• Military avionics data handling systems
• Spacecraft telemetry encoding interfaces
• High-reliability industrial control prioritization circuits

Procurement Notes

Verify component authenticity through authorized channels due to the prevalence of counterfeits in the military supply chain. Confirm that the specific suffix matches the required radiation tolerance and burn-in specifications defined in the JESD-38 standards. Ensure the supplier provides full traceability documentation, including lot codes and material certifications, to meet defense contract compliance requirements.

Selection Notes

Select this component when designing systems requiring MIL-STD-883 qualified logic gates with extended thermal stability. It serves as a direct equivalent to commercial SN54LS148 variants but offers superior environmental resilience. Consider the CDIP footprint constraints during PCB layout planning to ensure proper thermal dissipation and mechanical retention in vibration-prone applications.

Part Context

This part falls under the Texas Instruments SN54LS family, which represents low-power Schottky bipolar logic technology. The JM38510 prefix indicates adherence to Joint Military Specification standards for microcircuit quality and reliability. This specific model integrates complex encoding logic into a robust package designed for long-term operational stability in extreme conditions.

Replacement Considerations

The SN54LS148J is the commercial counterpart offering identical logical functionality without military qualification. For non-critical applications, verify if the commercial grade meets the thermal and voltage requirements. Direct substitution requires confirming pin compatibility and ensuring the system does not rely on the specific radiation hardening or extended temperature testing inherent to the JM38510 variant.