74LCXZ245MTCX

Overview

The onsemi 74LCXZ245MTCX is an octal bidirectional transceiver with three-state outputs, designed for low-voltage (2.3V to 3.6V) applications while maintaining compatibility with 5V signal environments. It features 5V tolerant inputs and outputs, ensuring safe interfacing across mixed-voltage systems. The device supports live insertion and withdrawal without causing bus glitches due to its power-down high-impedance state. With a maximum propagation delay of 7.0 ns at 3.3V and output drive capabilities up to -24 mA, it balances high-speed performance with low power dissipation.

Feature Summary

• Provides five-volt tolerant input and output interfaces for mixed-voltage system integration
• Supports live insertion and extraction operations through controlled high-impedance states during power transitions
• Implements patented noise and electromagnetic interference reduction circuitry

Applications

• Bus-oriented data transmission in low-voltage electronic systems
• Interfacing between 3.3V logic circuits and 5V signal environments
• High-speed data routing in portable consumer electronics

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the MTC designation indicates a 20-lead Thin Shrink Small Outline Package. Confirm lead-free compliance status if environmental regulations apply to your assembly process. Ensure the supplier provides traceability documentation consistent with JEDEC standards for the selected package variant.

Selection Notes

Select this component when bidirectional data transfer is required between domains operating at different voltage levels. The LCXZ series is appropriate for designs needing robust ESD protection and glitch-free operation during power cycling. Consider the TSSOP-20 package constraints regarding thermal management and board space availability before finalizing the design.

Part Context

This part belongs to the 74LCXZ family of low-voltage CMOS logic devices. It serves as a bridge between standard logic families and modern low-power architectures. The Z suffix typically denotes enhanced specifications or specific manufacturing revisions within the broader LCX product line, focusing on improved electrical characteristics compared to earlier iterations.

Replacement Considerations

Direct replacements include the 74LCX245 variants from other manufacturers that share identical pinouts and electrical specifications. Verify that substitute parts maintain the same 5V tolerance and package dimensions to ensure mechanical compatibility without redesigning the printed circuit board layout.