SNJ54HC139J

Signal Switches, Multiplexers, Decoders Overview

The SNJ54HC139J is a military-grade dual 2-line to 4-line decoder/demultiplexer in a 16-pin ceramic dual in-line package (CDIP). It operates within a supply voltage range of 2 V to 6 V and supports an extended temperature range from -55°C to 125°C. The device features two independent decoders with active-low outputs and dedicated enable inputs. Key electrical characteristics include a maximum propagation delay of 51 ns at 4.5 V, a typical delay of 35 ns, and a maximum quiescent current of 80 μA.

Signal Switches, Multiplexers, Decoders Feature Summary

• Incorporates two independent 2-to-4 line decoders with active-low outputs
• Features dedicated active-low enable inputs for cascading or demultiplexing control
• Designed for high-speed memory decoding and data-transmission systems
• Provides fully buffered inputs that represent only one normalized load

Signal Switches, Multiplexers, Decoders Applications

• High-performance memory system decoding
• Data-routing applications requiring short propagation delays
• Demultiplexing circuits utilizing the enable input as a data line

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'J' confirms the CDIP ceramic package variant. Confirm the part status is listed as Active Production in the manufacturer's orderable addendum. Ensure the procurement documentation matches the required military or space qualification standards if applicable to the design.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when military-grade reliability and wide temperature operation are required. The HC series offers low power consumption compared to older logic families. Verify that the 16-pin CDIP footprint fits the mechanical constraints of the target assembly.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the SN54HC139 family, which includes variants in SOIC, SSOP, PDIP, LCCC, and CFP packages. The SNJ54HC139J specifically denotes the ceramic dual in-line package version intended for harsh environments. Other family members share identical logical functionality but differ in physical packaging and thermal properties.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN54HC139J

Signal Switches, Multiplexers, Decoders FAQ

Can the enable input function as a data line?

Yes, the active-low enable input can be used as a data line in demultiplexing applications.

What is the maximum operating voltage?

The recommended operating conditions specify a maximum supply voltage of 6 V.