MC74VHCT245ADWR2G

Buffers, Drivers, Receivers, Transceivers Overview

The MC74VHCT245ADWR2G is an octal bus transceiver from the VHCT logic family, fabricated using advanced high-speed CMOS technology. It operates within a voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs with defined thresholds of 0.8 V for low and 2.0 V for high states. The device provides balanced propagation delays, typically 4.9 ns at 5.0 V, and maintains low power dissipation with a maximum static current of 4 μA. It includes power-down protection on inputs and outputs and offers three-state output control.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• TTL-compatible input levels ensure direct interfacing with standard logic families without external level shifting components.
• Power-down protection prevents unintended current flow through I/O pins when the device is unpowered.
• Balanced propagation delays support synchronous data transfer across bidirectional bus architectures.

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus buffering between microprocessors and memory modules
• Level translation interfaces connecting TTL-driven systems to CMOS-based peripherals
• General-purpose octal bus transceivers in industrial control equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix ADWR2G against the manufacturer's official datasheet to confirm package type and pinout compatibility. Ensure the operating environment remains within the specified 4.5 V to 5.5 V supply range to maintain signal integrity. Confirm that input pins are not left floating during operation to prevent undefined states or excessive power consumption.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data transfer is required between TTL and CMOS domains. The VHCT series is suitable for applications demanding low power consumption alongside high-speed performance. Verify that the system voltage aligns with the 4.5 V to 5.5 V specification and that the SOIC-20 package fits the board layout constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the MC74VHCT245A series of octal bus transceivers manufactured by onsemi. It utilizes silicon gate CMOS technology to achieve performance comparable to Bipolar Schottky TTL while retaining CMOS low-power characteristics. The device is designed for robust operation in environments requiring latchup protection exceeding 300 mA and high ESD tolerance.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct functional substitutes include MC74VHCT245ADTG and MC74VHCT245ADT, which share identical logical functions and pinouts. Verify package dimensions and thermal characteristics before substitution to ensure mechanical fit and adequate heat dissipation in the target application.