SN54LS598J

Shift Registers Overview

The SN54LS598J is an 8-bit parallel-in serial-out shift register manufactured by Texas Instruments. It features input latches to isolate data inputs from the shift register clock, allowing parallel data to be loaded while shifting out previous data. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum propagation delay of 100 ns. It is housed in a 20-lead Ceramic Dual In-Line Package (CDIP) with glass-sealed construction, designed for military-grade reliability across an extended temperature range of -55 °C to 125 °C.

Shift Registers Feature Summary

• Parallel-in serial-out architecture with dedicated input latches
• Military-grade ceramic dual in-line package for harsh environments
• Extended operating temperature range suitable for aerospace applications

Shift Registers Applications

• Military communication systems requiring high-reliability data storage
• Aerospace telemetry data buffering
• Industrial control systems with strict environmental tolerances

Shift Registers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the presence of obsolete status indicators in public databases. Confirm that the CDIP package variant matches specific board layout requirements. Ensure compliance with relevant military specifications if the application demands certified traceability. Request detailed lot traceability documentation for quality assurance purposes before finalizing procurement decisions.

Shift Registers Selection Notes

Select this component when designing systems requiring robust data serialization in extreme thermal conditions. The ceramic package provides superior hermetic sealing compared to plastic alternatives. Consider the 8-bit width and latch functionality for simple data buffering tasks. Evaluate pin compatibility with existing 20-pin DIP footprints during the initial schematic capture phase to avoid redesign efforts.

Shift Registers Part Context

This part belongs to the SN54LS series, which denotes logic devices qualified for military specifications. The 'J' suffix indicates a ceramic dual in-line package. Unlike commercial variants, these components undergo rigorous testing for radiation hardness and thermal stability. The series represents a legacy technology still utilized in maintenance and specialized defense electronics where long-term availability and proven performance are critical.

Shift Registers Replacement Considerations

Public sources indicate the SN54LS598J may be obsolete. Verify current production status directly with Texas Instruments. Potential substitutes include other SN54LS-series shift registers with identical pinouts, but functional equivalence must be confirmed against specific timing and electrical characteristics.