54HC4543J/B

Overview

The 54HC4543J/B is a high-speed CMOS BCD-to-seven-segment latch/decoder/driver manufactured by Rochester Electronics. It features four address inputs, an active HIGH latch disable input, an active HIGH blanking input, and an active HIGH phase input. The device provides seven buffered segment outputs suitable for driving liquid crystal or LED displays. It operates within the military temperature range of -55°C to 125°C and utilizes a plastic ceramic dual in-line package.

Feature Summary

• Supports Boolean decoding functions for display applications
• Includes internal latching capability for data retention
• Provides configurable output polarity via phase control
• Features active HIGH blanking input for display suppression

Applications

• Military-grade digital display systems
• Seven-segment LED indicator panels
• Liquid crystal display drivers
• Avionics instrumentation interfaces

Procurement Notes

Verify that the component meets MIL-PRF-38535 Class Q requirements when specified for critical applications. Confirm the presence of the J/B suffix indicates a specific packaging or testing variant approved by the Original Component Manufacturer. Ensure documentation aligns with the SN54HC4543 datasheet specifications for electrical characteristics and thermal limits.

Selection Notes

Select this component for designs requiring robust performance across extreme temperature variations typical of aerospace or defense environments. The HC series offers compatibility with standard logic families while providing higher speed than legacy counterparts. Consider the buffered outputs for direct drive capabilities without external buffering components.

Part Context

This part belongs to the SN54HC4543 family of BCD-to-seven-segment decoders. It is a recreation of original intellectual property approved by the Original Component Manufacturer. Rochester Electronics ensures quality through ISO-9001 and AS9120 certifications, utilizing original factory test programs to guarantee performance standards are met or exceeded.

Replacement Considerations

Compatible substitutes include the SN54HC4543 from Texas Instruments or equivalent parts from other manufacturers offering the same military temperature range and pinout configuration. Verify logical function equivalence and voltage tolerance levels before integration.