MC74LCX245MEL

Overview

The MC74LCX245MEL is an octal bidirectional transceiver from the 74LCX logic family, manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 3.6 V and features 3-state outputs with non-inverting functionality. The device provides balanced output drive capabilities of 24 mA for both sourcing and sinking currents. It supports LVTTL and TTL input levels while delivering LVCMOS output levels. Key electrical parameters include a maximum propagation delay of 8 ns and a maximum power supply current of 10 µA. The component is housed in a SOIC-20 package and is rated for operation between -40°C and +85°C.

Feature Summary

• Provides eight non-inverting bidirectional buffers with 3-state outputs for bus-oriented applications
• Features 5 V tolerant inputs allowing safe interfacing with 5 V devices when VCC is below 5.0 V
• Supports live insertion and withdrawal with IOFF specification ensuring high impedance when VCC is 0 V

Applications

• Memory address driving
• TTL level bus oriented transceiver applications
• High impedance buffering for bidirectional data flow control

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Confirm RoHS compliance status and automotive qualification requirements if applicable. Check for obsolescence or lifecycle changes directly with the manufacturer. Ensure the ordering part number matches the required voltage range and pin configuration for your design.

Selection Notes

Select this component for low-voltage systems requiring 2.0 V to 3.6 V operation with high noise immunity. It is suitable where 5 V tolerance is needed for mixed-voltage interfaces. Consider the 24 mA drive strength for direct loading requirements. Verify that the SOIC-20 package fits the PCB layout constraints and thermal management needs of the application.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices. It serves as a standard solution for bidirectional data transfer in portable and battery-powered electronics. The LCX family offers performance comparable to older AC/ACT families but at significantly lower supply voltages and power consumption.

Replacement Considerations

MC74LCX245DTR2G: Pin-compatible alternative with different packaging.