ON Semiconductor MC74VHCT245ADWRG Octal Bus Transceiver

The ON Semiconductor MC74VHCT245ADWRG is a high-performance, octal bus transceiver designed for asynchronous communication between data buses. It is a part of the VHCT (Very High-Speed CMOS TTL-compatible) family, which is known for its robustness and speed, making it an ideal choice for interfacing with TTL logic levels while maintaining CMOS low power dissipation.

This device allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction control (DIR) input. The output enable (OE) input can be used to disable the device so that the buses are effectively isolated. The MC74VHCT245ADWRG is designed to be used as an interface between different voltage domains and can be powered off a 5V supply. Its inputs are TTL-compatible and can withstand voltages up to 5.5V, even when the device is powered off, making it tolerant to higher voltage levels.

The package is a 20-lead SOIC (MC74VHCT245ADWRG) that offers a reduced footprint on PCBs and is suitable for automated surface-mount assembly processes, contributing to a more efficient manufacturing workflow. The device features non-inverting buffers with high drive current outputs which can drive heavily loaded outputs with the lowest propagation delay.

Key features of the MC74VHCT245ADWRG include:

• Octal bidirectional switching
• High-speed CMOS technology
• TTL input compatibility
• 5V operating voltage
• High drive current outputs (+24mA/-24mA)
• Low power consumption
• Improved latch-up immunity
• Wide operating temperature range: -55°C to +125°C

Applications for the MC74VHCT245ADWRG are diverse and include data bus transceivers in computing and telecommunication systems, memory switching, bidirectional interface communication between different voltage domains, and peripheral drivers where high-speed, low power operation is required.

Overall, the ON Semiconductor MC74VHCT245ADWRG is a reliable and efficient solution for modern electronic systems requiring high-speed data transfer and voltage level translation with the protection of legacy TTL interfaces.