74LCX16543MTDX

Overview

The onsemi 74LCX16543MTDX is a low voltage 16-bit registered transceiver with 5V tolerant inputs and outputs. It contains sixteen non-inverting transceivers with two sets of D-type registers for temporary data storage in either direction. Each byte has separate control inputs, allowing independent input and output control or shorting them together for full 16-bit operation. The device supports live insertion/withdrawal and implements patented noise/EMI reduction circuitry. It operates within a supply voltage range of 2.3V to 3.6V, featuring a maximum propagation delay of 5.2 ns at VCC = 3.3V and a maximum quiescent current of 20 µA.

Feature Summary

• Provides 5V tolerant inputs and outputs for interfacing between low voltage logic and 5V signal environments.
• Features patented noise and EMI reduction circuitry to minimize electromagnetic interference during operation.
• Supports live insertion and withdrawal capabilities when the Output Enable pin is properly managed.
• Includes dual D-type register sets for temporary storage of data flowing in either direction.

Applications

• Interfacing low voltage logic circuits with 5V signal environments
• High-speed data bus applications requiring registered transceivers
• Systems supporting live insertion and withdrawal operations

Procurement Notes

Verify component authenticity through authorized distributors as this part is discontinued. Confirm package integrity upon receipt, specifically checking for damage to the 56-lead TSSOP housing. Review the datasheet for absolute maximum ratings to ensure safe handling and soldering procedures are followed. Validate that all unused inputs or I/Os are held HIGH or LOW to prevent floating states.

Selection Notes

Select this component for designs requiring bidirectional data transfer with registered storage between 2.3V and 3.6V logic domains and 5V tolerant interfaces. Consider its low power dissipation and high-speed operation characteristics. Evaluate the need for independent byte control versus full 16-bit parallel operation based on system architecture requirements.

Part Context

This device belongs to the LCX family of low voltage CMOS logic devices manufactured by onsemi. It is designed to provide high-speed performance while maintaining low power consumption. The specific model utilizes a 56-lead Thin Shrink Small Outline Package (TSSOP) suitable for surface mount applications.

Replacement Considerations

The device is discontinued and not recommended for new designs. Contact an onsemi representative for information regarding alternative solutions or compatible replacements.