ON Semiconductor MC74HCT245ADTR2 Octal Bus Transceiver

The ON Semiconductor MC74HCT245ADTR2 is a high-performance, octal bus transceiver designed to provide bidirectional drive for bus-oriented microprocessor and digital communication systems. Operating as an interface between two buses, this integrated circuit offers non-inverting data paths and combines the low power features of CMOS with the high drive capability of bipolar transistors.

The MC74HCT245ADTR2 transceiver is fabricated with silicon gate CMOS technology, which ensures greater speed and output drive capabilities while maintaining CMOS low-power dissipation. It is a versatile component that can be used in a wide array of applications, including data bus buffering, peripheral driving, and memory address driving, making it a staple in modern digital design.

Key Features:

• Logic Type: Octal Bus Transceiver with 3-state outputs
• Operating Voltage: 4.5V to 5.5V, which is suitable for TTL and CMOS technologies
• High-Speed Operation: Ensures reliable data exchange with typical propagation delay time of 8ns
• Drive Capability: Capable of driving 15 LSTTL loads, providing versatility in interfacing with various logic families
• Package: Comes in a TSSOP-20 package, which is ideal for space-constrained applications
• Temperature Range: Operates within an industrial temperature range of -55°C to 125°C
• Logic Level Translation: Capable of translating between 5V and 3.3V logic levels, allowing for use in mixed-voltage systems

This device includes an output enable (OE) and a directional control (DIR) input which dictate the data flow direction. When OE is low, the device passes data from the A inputs to the B outputs or from the B inputs to the A outputs depending on the status of the DIR input. With high-impedance state outputs, the MC74HCT245ADTR2 ensures minimal power consumption when not actively driving the bus.

The MC74HCT245ADTR2 is designed for asynchronous communication between data buses, and its robust design ensures that it can handle the demands of high-speed data transfer while maintaining signal integrity. Its TSSOP-20 packaging makes it a practical choice for applications where board space is at a premium.

As part of ON Semiconductor's commitment to environmental sustainability, the MC74HCT245ADTR2 is available in a Pb-free package. This product is compliant with the EU's Restriction of Hazardous Substances (RoHS) directive, making it suitable for use in environmentally sensitive applications.