74LCX543MTC

Overview

The Fairchild Semiconductor 74LCX543MTC is an octal registered bus transceiver belonging to the 74LCX logic family. It features eight non-inverting channels with three-state outputs, designed for low-voltage CMOS applications. The device operates within a supply voltage range of 2V to 3.6V and supports LVTTL or TTL input levels while providing LVCMOS output levels. Key electrical specifications include a maximum propagation delay of 8ns, a low-level output current of 24mA, and a high-level output current of -24mA. It functions in temperatures from -40°C to +85°C and is housed in a TSSOP-24 surface-mount package.

Feature Summary

• Octal Registered Bus Transceiver
• Three-State Outputs
• Non-Inverting Polarity
• LVTTL/TTL Input Compatibility

Applications

• Bus-oriented memory and register implementations
• Clock drivers
• Buffering and bus control circuits

Procurement Notes

Verify component authenticity through authorized distribution channels due to potential manufacturer transitions following corporate acquisitions. Confirm RoHS compliance status and check for End-of-Life notifications or Production Change Notices prior to finalizing procurement plans. Ensure packaging specifications match design requirements.

Selection Notes

Select this component for designs requiring high-density data storage and transfer between buses. The 8ns propagation delay suits moderate-speed digital systems. Verify that the 24mA drive capability meets load requirements. Ensure the TSSOP-24 footprint aligns with PCB layout constraints and thermal management needs.

Part Context

This part belongs to the 74LCX series, which utilizes advanced CMOS technology for low-power operation at low voltages. It serves as a registered variant within the LCX543 product line, distinguishing itself from unregistered transceivers by incorporating internal D-type flip-flops for data latching on clock edges.

Replacement Considerations

Check for equivalents such as the PI74LCX543SX or 74LCX543MTCX. Verify pin compatibility and electrical characteristics before substitution.