M38510/65802BEA

Overview

M38510/65802BEA is a military-grade SN54HC138 3-to-8 decoder/demultiplexer in a CDIP-16 package. It operates from 2 V to 6 V with an operating temperature range of -55 °C to 125 °C. The device features active-low outputs, three binary select inputs (A, B, C), and three enable inputs (one active-high G1, two active-low G2A/G2B). Typical propagation delay is 15 ns at 5 V.

Feature Summary

• Provides one-of-eight decoding for high-speed memory systems
• Includes three enable inputs to simplify cascading or data reception
• Features active-low outputs where the selected output is pulled low

Applications

• High-speed memory decoders
• Data-transmission systems
• LED matrix displays

Procurement Notes

Verify that the component matches the specific MIL-M-38510 Class B qualification requirements. Confirm the CDIP-16 ceramic package integrity and ensure the part number suffix corresponds to the correct lead finish and screening level for your application environment.

Selection Notes

Select this component when system design requires extended temperature operation down to -55 °C and radiation-hardened reliability standards. Ensure the logic family voltage compatibility aligns with the 2 V to 6 V supply range and that the active-low output polarity fits the downstream circuitry requirements.

Part Context

This part belongs to the SN54HC138 series, representing the military-grade variant of the standard HC138 decoder. It utilizes CMOS technology to achieve balanced output drive and low power consumption while maintaining high-speed performance suitable for demanding industrial and aerospace environments.

Replacement Considerations

SN54HC138J

FAQ

How many enable inputs does the M38510/65802BEA have?

The device incorporates three enable inputs: one active-high (G1) and two active-low (G2A and G2B).

What is the output state of the unselected lines?

When enabled, the selected output is pulled LOW, while all remaining unselected outputs remain HIGH.