CD74HC4543E

Display Drivers Overview

The CD74HC4543E is a high-speed CMOS logic device manufactured by Texas Instruments, belonging to the HC series. It functions as a BCD-to-7-segment latch/decoder/driver specifically designed for LCDs. The component features four input lines and seven output lines, packaged in an SOIC-14 format. Key electrical parameters include a propagation delay of 60 ns, with a minimum operating temperature of -55°C and a maximum of +125°C. It operates within a power supply voltage range of 2 V to 6 V.

Display Drivers Feature Summary

• Converts Binary Coded Decimal inputs into active-low outputs suitable for driving LCD segments.
• Includes internal latching capability to hold decoded data stable without continuous input signals.

Display Drivers Applications

• Driving liquid crystal displays (LCDs) in digital instrumentation.
• Decoding BCD data for segment-based display interfaces.
• Low-power consumer electronics requiring static display maintenance.

Display Drivers Procurement Notes

Verify the specific suffix 'E' indicates the SOIC-14 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure the supplier provides valid traceability for the Texas Instruments manufacturing origin. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Display Drivers Selection Notes

Select this component when a BCD-to-7-segment decoder with integrated latching is required for LCD applications. The HC series offers high speed and low power consumption compared to older logic families. Consider the wide operating temperature range and voltage flexibility for robust industrial or commercial environments. Verify pinout compatibility if replacing legacy components in existing designs.

Display Drivers Part Context

This part belongs to the Texas Instruments CD74HC45xx series of high-speed CMOS logic devices. It is functionally related to other decoders like the CD74HC4511 but optimized for LCD drivers rather than LED displays. The family provides standardized interfaces for digital systems requiring segment decoding. It complements other HC series logic gates for complete system integration.

Display Drivers Replacement Considerations

• CD74HC4543PW

Display Drivers FAQ

What is the primary difference between the CD74HC4543 and standard LED decoders?

The CD74HC4543 is specifically designed for LCDs with active-low outputs, whereas standard LED decoders typically provide active-high outputs suitable for light-emitting diodes.

Does the CD74HC4543E support direct TTL input levels?

No, the HC series requires CMOS-compatible input voltages. For TTL compatibility, the HCT series variant should be selected instead.