The TC74ACT640P is an octal bus transceiver with 3-state outputs manufactured by Toshiba Semiconductor and Storage. It's part of the advanced CMOS (ACT) logic family, offering high-speed performance with low power consumption. The device is designed for bidirectional data transmission across parallel buses, making it suitable for a wide range of digital systems.

Applications

• Memory interface
• Microprocessor systems
• Data bus isolation
• Parallel data transmission
• Line driving

Features

• Octal bus transceiver
• 3-state outputs
• Bidirectional data flow
• High-speed operation
• Low power consumption
• TTL-compatible inputs
• High output drive capability

Benefits

• Efficient Data Transmission: The octal bus transceiver allows for efficient transfer of data between two buses, improving overall system performance.
• Bus Isolation: The 3-state outputs enable bus isolation, preventing conflicts and allowing multiple devices to share the same bus.
• High-Speed Performance: The ACT logic family provides high-speed operation, ensuring fast data transfer rates.
• Low Power Consumption: The CMOS technology minimizes power consumption, making the device suitable for battery-powered applications.
• TTL Compatibility: TTL-compatible inputs allow the device to interface seamlessly with TTL logic circuits.
• High Output Drive: The high output drive capability enables the device to drive heavily loaded buses.

Additional Details

The TC74ACT640P features two enable inputs (OE\) that control the direction of data flow. When OE\ is low, data flows from A to B; when OE\ is high, data flows from B to A. When both enable inputs are high, the outputs are in a high-impedance state, effectively disconnecting the transceiver from the bus. This allows multiple devices to share the same bus without causing conflicts. The device operates from a 4.5V to 5.5V power supply and features a propagation delay of typically 7ns. The operating temperature range is typically -40°C to +85°C. It comes in a DIP (Dual In-line Package). The specific part number, TC74ACT640P, refers to the DIP package version of this transceiver. Refer to the datasheet for complete electrical characteristics, timing diagrams, and application notes. Note the pinout of the DIP package for correct implementation in your circuit.