ON Semiconductor 74VHCT245AMTC: High-Speed CMOS Logic Octal Bus Transceiver

The 74VHCT245AMTC from ON Semiconductor is a high-speed CMOS logic octal bus transceiver designed to provide bidirectional interfacing between data buses. This integrated circuit is part of the VHCT family and is optimized for use in systems that require low power consumption without compromising on performance. The device is capable of driving heavily loaded buses with up to 15 LSTTL loads while maintaining fast propagation delay times and low quiescent power consumption.

The 74VHCT245AMTC features eight non-inverting bus transceivers with 3-state outputs. Each transceiver is capable of individual direction control, which facilitates communication from either bus A to bus B or vice versa. The direction control (DIR) and output enable (OE) inputs are used to control the direction of data flow and the activation of the outputs, respectively.

Constructed with advanced CMOS technology, the 74VHCT245AMTC offers a significant advantage in power and speed over equivalent bipolar schottky logic types. The device operates at a voltage range of 4.5V to 5.5V, making it compatible with TTL logic levels while providing higher speed and better output drive capabilities compared to standard CMOS integrated circuits.

Key features of the 74VHCT245AMTC include:

• High-speed CMOS technology
• Typical t_pd of 8.0ns at V_CC = 5V
• Low power consumption: I_CC = 4µA (max) at T_A = 25°C
• Power-off disable outputs permit live insertion
• Supports mixed-mode signal operation (5V input and output voltages with 3.3V V_CC)
• Multiple package options available

The device is offered in a 20-pin TSSOP package, which is ideal for space-constrained applications. It is also characterized for operation from -40°C to +85°C, ensuring reliability across a broad range of operating conditions. The 74VHCT245AMTC is suitable for a wide array of applications including bus interface, data communication, and signal buffering in computing, telecommunication, and industrial systems.

ON Semiconductor's commitment to quality ensures that the 74VHCT245AMTC meets the stringent requirements of the electronics industry, making it a reliable choice for designers looking to implement robust and efficient data bus communication in their systems.