54LS192/BEA

Overview

The SN54LS192BEA is a synchronous, positive edge-triggered decade counter belonging to the LS series of TTL logic devices. Manufactured by Rochester Electronics, this component features bidirectional counting capabilities with separate clock inputs for up and down operations. It utilizes a CQCC20 package, specifically an LCC-20 ceramic metal-sealed cofired chip carrier, designed for high reliability in demanding environments. The device supports load/preset functions and provides distinct outputs for carry out during both up and down counting sequences. It is characterized for operation over the full military temperature range from -55°C to 125°C.

Feature Summary

• Synchronous positive edge-triggered operation ensures precise timing control for sequential logic applications.
• Bidirectional counting functionality allows flexible implementation of both incrementing and decrementing counters.
• Military-grade construction using ceramic metal-sealed cofired packaging provides robust environmental protection.

Applications

• High-reliability digital counting systems requiring extended temperature tolerance
• Military aerospace electronic circuits utilizing hermetic sealed packages
• Industrial control logic involving bidirectional sequence generation

Procurement Notes

Verify the specific suffix BEA against official manufacturer documentation to confirm the exact package variant and material composition. Ensure that the procurement source provides traceability to original specifications or approved recreations. Confirm compliance with relevant quality certifications such as MIL-PRF-38535 if required for the intended application environment.

Selection Notes

Select this component when a synchronous decade counter with bidirectional capability is required for harsh operating conditions. The ceramic package is suitable for applications necessitating hermetic sealing. Verify that the voltage and current requirements align with standard TTL logic levels before integration into the circuit design.

Part Context

This device is part of the broader SN54LS192 family of synchronous presettable decade counters. It shares functional characteristics with other LS series components but is distinguished by its specific military-grade packaging and extended temperature rating. The component serves as a fundamental building block for complex digital timing and sequencing circuits within specialized electronic systems.

Replacement Considerations

Consult official substitution lists for compatible alternatives. Verify pin compatibility and electrical parameters before replacing with similar logic families. Ensure any substitute maintains the required military temperature range and package integrity.