CD74HCT4543EE4

Display Drivers Overview

The CD74HCT4543EE4 is a high-speed CMOS logic device manufactured by Texas Instruments, functioning as a BCD-to-7-segment latch/decoder/driver specifically designed for LCDs. It belongs to the HCT logic series, ensuring TTL-compatible inputs while maintaining CMOS outputs. The component operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -55 °C to +125 °C. It is housed in a 16-pin SOIC package with an extended industrial temperature rating.

Display Drivers Feature Summary

• Integrates BCD latching, decoding, and driving capabilities for direct LCD interface
• Features TTL-compatible input levels for seamless integration with standard logic families
• Provides active-low outputs optimized for common-source LCD configurations

Display Drivers Applications

• Liquid Crystal Display (LCD) driver circuits
• BCD to 7-segment display interfacing
• Industrial control panel indicators

Display Drivers Procurement Notes

Verify the specific suffix EE4 indicates lead-free status and RoHS compliance when sourcing. Confirm the manufacturer is Texas Instruments to ensure authenticity. Check datasheet revisions for any pinout or electrical characteristic updates before finalizing design integration.

Display Drivers Selection Notes

Select this component when a combined latch, decoder, and driver solution is required for LCD applications. The HCT series ensures compatibility with 5V TTL logic systems. Consider the extended temperature range if the application involves harsh environmental conditions.

Display Drivers Part Context

This part is part of the CD74HCT family, which bridges the gap between low-power CMOS technology and standard TTL logic levels. It offers improved noise immunity and lower power consumption compared to older LS series devices while maintaining compatible switching speeds.

Display Drivers Replacement Considerations

CD74HCT4543E

Display Drivers FAQ

What is the primary output polarity of the CD74HCT4543EE4?

The device provides active-low outputs, making it suitable for driving common-source LCD displays.

Does the CD74HCT4543EE4 include internal latching?

Yes, it integrates a BCD latch that holds the decoded data stable even if the input signals change.