74LCX646MTCX

Overview

The onsemi 74LCX646MTCX is a low voltage octal transceiver and register featuring 5V tolerant inputs and outputs. It utilizes registered bus transceiver circuits with D-type flip-flops for multiplexed data transmission from input buses or internal storage registers. Fabricated using advanced CMOS technology, it supports VCC specifications of 2.3V to 3.6V while interfacing with 5V signal environments. The device offers a maximum propagation delay of 7.0 ns at VCC = 3.3V and a maximum quiescent supply current of 10 µA. It provides ±24 mA output drive capability at VCC = 3.0V.

Feature Summary

• Supports live insertion and withdrawal operations
• Implements patented noise and EMI reduction circuitry
• Provides power-down high impedance state for inputs and outputs

Applications

• Bus management systems requiring multiplexed data transmission
• Low voltage applications interfacing with 5V signal environments
• Registered bus transceiver circuits in electronic designs

Procurement Notes

Verify the specific package variant against the datasheet ordering codes. The MTC suffix indicates a 24-Lead Thin Shrink Small Outline Package (TSSOP). Confirm that the required logic functions align with the provided truth table and control signals. Ensure compatibility with the specified operating temperature range and voltage levels before finalizing procurement.

Selection Notes

Select this component when an octal transceiver with integrated registration is required for low voltage systems. It is suitable for designs needing 5V tolerance on both inputs and outputs. Consider the 24-pin TSSOP package constraints and the specific control logic requirements for clocking and direction selection during system architecture planning.

Part Context

This device belongs to the LCX family of low voltage CMOS logic devices. It combines the functionality of a bus transceiver with data registers, allowing for flexible data routing between two 8-bit buses. The design facilitates efficient data handling in mixed-voltage digital systems by providing robust isolation and controlled data flow capabilities.

Replacement Considerations

Check for equivalent octal transceivers with similar voltage tolerances and pinout configurations. Verify that any substitute part maintains the same 5V tolerance and low power characteristics. Ensure the replacement supports the required TSSOP-24 package form factor and meets the necessary electrical performance specifications.