JM54AC138S2A-RH

Overview

The JM54AC138S2A-RH is a high-speed 1-of-8 decoder/demultiplexer manufactured by National Semiconductor. It operates on a single supply voltage ranging from 2V to 6V. The device features independent circuits with output current capabilities of 24mA for both high and low states. It is housed in a 20-CLCC package, measuring 8.89x8.89mm, and supports surface mount mounting. The component is designed for military temperature ranges, functioning between -55°C and 125°C.

Feature Summary

• High-speed decoding and demultiplexing functionality
• Military-grade temperature range operation
• Single supply voltage compatibility

Applications

• Bipolar memory chip select address decoding
• High-speed signal routing
• Decoder/demultiplexer circuits

Procurement Notes

Verify the manufacturer designation as National Semiconductor, noting its acquisition history. Confirm the specific suffix 'S2A' corresponds to the 20-CLCC package variant. Ensure the RoHS compliance status matches project requirements. Validate the active part status through official distributor channels before procurement.

Selection Notes

Select this component when military-grade thermal stability is required alongside high-speed decoding. The 20-CLCC package suits surface-mount designs needing compact footprints. Verify that the 2V to 6V supply range aligns with system power rails. Consider the 24mA output drive capability for load requirements.

Part Context

This part belongs to the 54AC series, indicating military-grade performance levels. The AC technology provides higher speed compared to standard logic families while maintaining CMOS power efficiency. The 1-of-8 configuration allows selection of one output line from eight possibilities based on three address inputs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.