SNJ54LS670FK

Signal Switches, Multiplexers, Decoders Overview

The SNJ54LS670FK is a military-grade 4-by-4 register file featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of 45 ns. The device functions across an extended temperature range from -55 °C to +125 °C. It utilizes LS logic technology with bipolar circuitry and is housed in a 20-pin LCCC package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides four independent 4-bit registers for data storage
• Features three-state outputs for bus-driven applications
• Supports bidirectional data transfer via address decoding

Signal Switches, Multiplexers, Decoders Applications

• Military and defense electronic systems
• High-reliability aerospace computing architectures
• Industrial control systems requiring wide temperature tolerance

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix FK to confirm the LCCC package type and military qualification status. Ensure compatibility with existing board layouts designed for leadless ceramic carriers. Confirm RoHS exemption requirements as this variant may not meet standard environmental directives.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when military-grade reliability and extended temperature operation are mandatory. The LCCC package offers robust mechanical stability for harsh environments. Verify that the system design accommodates the specific pinout and power requirements of the LS logic family.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN54LS670 series, which includes commercial (SN74LS670) and military (SN54LS670) variants. The SNJ prefix indicates a ceramic package construction suitable for demanding operational conditions. It serves as a core memory element in digital logic circuits requiring fast access times.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct replacements include other SN54LS670 variants with different packages such as CDIP or CFP. Cross-reference with equivalent military-grade register files from other manufacturers if package constraints allow.