74LCX543MSA

Overview

The Fairchild Semiconductor 74LCX543MSA is an octal bus transceiver featuring registered outputs. It operates within a supply voltage range of 2V to 3.6V and utilizes a 24-SSOP surface-mount package. The device provides non-inverting, three-state outputs with drive capabilities of 24mA for both high and low states. Designed for low-voltage applications, it supports operation across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Octal registered bus transceiver architecture
• Three-state output capability
• Non-inverting logic function

Applications

• Low-voltage memory interface circuits
• Bus-oriented communications systems
• Driving capacitive loads in portable electronics

Procurement Notes

Verify component authenticity due to obsolete status. Confirm package integrity and pin alignment against the 24-SSOP specification. Ensure replacement parts maintain identical electrical characteristics and pinout compatibility for direct integration into existing designs without modification.

Selection Notes

Select this component for designs requiring registered data latching on bidirectional buses. The 74LCX series ensures compatibility with LVTTL and TTL input levels while operating at lower voltages. Verify that the required propagation delay and output drive strength meet system timing constraints before finalizing the design.

Part Context

This part belongs to the 74LCX family of low-voltage CMOS logic devices. It serves as a registered version of standard bus transceivers, adding clocked storage to prevent data corruption during bus transitions. The MS suffix indicates the specific SSOP packaging variant used for surface-mount assembly.

Replacement Considerations

• 74LCX543MTC