MC74LCX245DTG

Overview

The MC74LCX245DTG is a low-voltage CMOS octal bidirectional transceiver manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 5.5 V and features five-volt tolerant inputs and outputs, enabling safe interfacing with 5 V devices even when the device supply is lower. The component provides balanced output sink and source current capabilities of 24 mA at both A and B ports. It includes an Output Enable input that places ports in a high-impedance state when active, and a Transmit/Receive input that controls data flow direction.

Feature Summary

• Features five-volt tolerant inputs and outputs for direct interface with 5 V TTL logic systems
• Provides balanced 24 mA source and sink current capability at both A and B ports
• Supports live insertion and withdrawal operations without system damage
• Guarantees high impedance state via IOFF specification when supply voltage is zero

Applications

• Memory address driving applications
• TTL level bus oriented transceiver circuits
• Low voltage CMOS interconnect systems

Procurement Notes

Verify the specific suffix 'DTG' against official manufacturer documentation to confirm package type and environmental compliance status. Ensure the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the part number with the latest datasheet revision to confirm pinout compatibility and electrical specifications before integration into designs.

Selection Notes

Select this component for applications requiring bidirectional data transfer between different voltage domains, specifically where 5 V tolerance is necessary. Consider the 24 mA drive strength for moderate load requirements and the low static supply current for power-sensitive designs. Verify that the operating temperature range and package constraints align with the target system environment and board layout specifications.

Part Context

This component belongs to the MC74LCX series of low-voltage CMOS logic devices produced by onsemi. The LCX family is designed for high-speed operation with low power consumption, bridging the gap between older LVC and newer LV technologies. It serves as a standard solution for bus-oriented applications requiring reliable signal transmission across mixed-voltage interfaces in consumer and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference material.