M38510/30903B2A

Overview

M38510/30903B2A is a military-grade quad 2-input multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -55 °C to 125 °C. The device utilizes Low-Power Schottky TTL logic and features a 20-pin Leadless Ceramic Chip Carrier (LCCC) package with a 1.27 mm pitch. It is qualified under MIL-M-38510 specifications for Class B microcircuits.

Feature Summary

• Provides four independent binary electronic switches for data routing
• Features Low-Power Schottky technology for reduced power consumption
• Includes dedicated selection inputs to control channel activation

Applications

• Military communication systems requiring high reliability
• Defense avionics signal processing circuits
• Harsh environment data acquisition modules

Procurement Notes

Verify the specific ordering suffix matches the required package type, as this part number corresponds to the LCCC variant. Confirm that the procurement source provides valid traceability documentation compliant with MIL-PRF-38535 standards. Ensure the component meets the necessary quality assurance classes for defense applications before finalizing acquisition.

Selection Notes

Select this component when a ruggedized, military-specification multiplexer is required for extreme temperature environments. Compare against commercial SN74LS157 variants if extended thermal performance or radiation hardness is not mandatory. Evaluate alternative packages such as CDIP or CFP if the LCCC footprint does not align with the target board layout constraints.

Part Context

This component belongs to the M38510 series of monolithic silicon digital microcircuits designed for Department of Defense applications. It is functionally related to the SN54LS157 family but adheres to stricter manufacturing and testing protocols defined in military specifications. The designation indicates compliance with detailed material and process requirements for long-term operational stability.

Replacement Considerations

SNJ54LS157FK serves as a direct functional equivalent within the same product family.