74LCX543MSAX

Overview

The onsemi 74LCX543MSAX is a low voltage octal registered transceiver with 5V tolerant inputs and outputs. It contains two sets of D-type registers for temporary data storage in either direction, featuring separate latch enable and output enable inputs for independent control. Fabricated with advanced CMOS technology, it supports live insertion/withdrawal and implements patented noise/EMI reduction circuitry. The device operates within a supply voltage range of 2.0V to 3.6V, with a maximum propagation delay of 8.5ns at VCC=2.7V and 10µA max ICC.

Feature Summary

• Features 5V tolerant inputs and outputs for interfacing with 5V signal environments while operating at low voltages.
• Contains two sets of eight D-type latches with separate input and output controls for each set.
• Implements patented noise and EMI reduction circuitry to enhance signal integrity.
• Supports live insertion and withdrawal capabilities.

Applications

• Low voltage (2.5V or 3.3V) applications requiring interface to 5V signal environments
• Systems supporting live insertion or withdrawal operations
• Data flow temporary storage in bidirectional bus architectures

Procurement Notes

Verify the specific package type and suffix requirements against current manufacturer documentation, as component availability and manufacturing status may change. Confirm that the ordering code matches the required pinout and electrical specifications for your design. Ensure compliance with RoHS directives and other relevant environmental standards before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring bidirectional data transfer between different voltage domains, specifically involving 5V tolerance. Consider the separate latch and output enable controls for precise data flow management. Evaluate the propagation delay and power consumption characteristics against system timing requirements and power budget constraints.

Part Context

The 74LCX543 belongs to the LCX family of logic integrated circuits, designed for low voltage operation. This specific part number indicates the MSOP package variant. The device serves as an octal registered transceiver, providing both buffering and latching functionality for digital data lines in complex electronic systems.

Replacement Considerations

Direct substitutes include the 74LCX543WM and 74LCX543MTC from the same manufacturer family, offering identical electrical characteristics but in different package formats such as SOIC or TSSOP. Verify pin compatibility and physical dimensions when considering alternative packages.

FAQ

How does the 74LCX543 handle data flow direction?

It uses separate A-to-B and B-to-A enable, latch enable, and output enable inputs to independently control data flow direction for each set of registers.

What is the significance of the 'X' suffix in the part number?

The 'X' suffix indicates that the device is available in Tape and Reel packaging format.