JM38510/65803BEA

Overview

The Texas Instruments JM38510/65803BEA is a military-grade dual 2-line to 4-line decoder/demultiplexer belonging to the HC (High-speed CMOS) logic family. It integrates two independent decoders within a single package, featuring active-low outputs and an enable input for data reception or cascading control. The device operates across a wide supply voltage range of 2 V to 6 V and supports an operating temperature range from -55 °C to 125 °C. It utilizes a 16-pin ceramic dual in-line package (CDIP).

Feature Summary

• Integrates two independent 2-to-4 line decoders with active-low outputs.
• Features an active-low enable input suitable for demultiplexing applications.
• Designed for high-speed memory decoding and data transmission systems.
• Provides fully buffered inputs representing minimal load to driving circuits.

Applications

• High-performance memory system decoding
• Data routing and transmission systems
• Demultiplexing applications requiring low propagation delay

Procurement Notes

Verify that the component matches the specific MIL-PRF-38535 qualification standards required for your application. Confirm the package type is the 16-pin CDIP variant. Ensure the supplier provides traceability documentation consistent with military-grade procurement requirements.

Selection Notes

Select this component when designing systems requiring robust CMOS logic performance under extreme environmental conditions. It is appropriate for aerospace and defense applications where radiation tolerance and wide temperature stability are critical. Consider its compatibility with existing HC logic families for seamless integration into complex digital architectures.

Part Context

This part is a specialized military version of the SN54HC139 decoder. While commercial variants like the SN74HC139 exist, the JM38510 series adheres to stricter manufacturing and testing protocols defined by military specifications. It ensures reliability in harsh environments where standard commercial components might fail due to temperature or stress variations.

Replacement Considerations

SN54HC139J

FAQ

What is the function of the G input?

The G input serves as an active-low enable. When asserted low, it allows the selected output to go low; otherwise, all outputs remain high.

Can this device be used for demultiplexing?

Yes, the active-low enable input can function as a data line, allowing the device to operate effectively as a demultiplexer.