54L193W/C

Overview

The SN54L193W/C is a synchronous up/down counter manufactured by Rochester Electronics. It features independent clock inputs for counting up and down operations, allowing flexible data manipulation in digital systems. The device includes a parallel load capability to set initial values and provides complementary outputs for both the count value and its inverse. Designed for military specifications, it operates reliably across the full extended temperature range of -55°C to 125°C. The component utilizes a hermetic ceramic package suitable for harsh environments.

Feature Summary

• Supports synchronous up and down counting with separate clock inputs
• Includes parallel load functionality for direct data entry
• Provides complementary output signals for the current count state
• Rated for operation within the full military temperature range

Applications

• Military aerospace control systems
• High-reliability industrial counters
• Harsh environment signal processing

Procurement Notes

Verify the specific suffix 'W/C' against official manufacturer documentation to confirm package type and material composition. Ensure that the procurement source provides traceability to original manufacturing standards. Confirm compliance with relevant military quality certifications such as MIL-PRF-38535 if required for the application. Request detailed test reports to validate performance parameters before integration into critical systems.

Selection Notes

Select this component when hermetic sealing and wide temperature tolerance are mandatory. Compare pin compatibility with existing designs to ensure mechanical fit. Evaluate power consumption requirements against available supply rails. Consider the availability of complementary logic gates if additional signal conditioning is needed for the counter outputs in the final circuit architecture.

Part Context

This part belongs to the SN54 series of logic integrated circuits, which are characterized for military-grade reliability. The 'L' designation indicates low-power Schottky technology, offering a balance between speed and power dissipation. Rochester Electronics supports these legacy components through reproduction or sourcing from original stock, ensuring continuity for long-life defense and aerospace programs.

Replacement Considerations

Direct substitutes include other SN54L193 variants with compatible pinouts. Verify that any replacement maintains the same hermetic package style and voltage levels. Cross-reference functional truth tables to ensure identical up/down counting behavior. Confirm that thermal characteristics match the original design constraints.