The PI74LVCC3245AS is a 32-bit Dual-Supply Bus Transceiver and 3-State Logic manufactured by Pericom Semiconductor. This device is designed for bidirectional asynchronous communication between data buses. It allows data transmission from A bus to B bus or from B bus to A bus depending on the direction control input. This device features a dual voltage supply, allowing interface between different voltage levels.

Applications

• Voltage Level Translation
• Bidirectional Data Bus Transceiving
• Memory Interface
• Bus Isolation
• Mixed Voltage Systems

Features

• 32-bit bidirectional transceiver
• Dual-supply translation: VCCA = 1.65V to 3.6V and VCCB = 2.3V to 5.5V
• 3-State Outputs
• Low Power Consumption
• High-Speed Data Transfer
• Direction Control Pin (DIR)
• Output Enable Pin (OE)
• Available in TSSOP and other packages

Benefits

• Facilitates communication between systems operating at different voltage levels.
• Enables bidirectional data transfer, improving system flexibility.
• Reduces power consumption, extending battery life in portable applications.
• Ensures fast data transmission, maintaining system performance.
• Provides control over data direction and output state for precise bus management.
• Offers a compact footprint with available TSSOP packages, saving board space.

Additional Details

The PI74LVCC3245AS operates with two separate supply voltages, VCCA and VCCB. VCCA can range from 1.65V to 3.6V, while VCCB can range from 2.3V to 5.5V. This allows the device to translate voltage levels between buses operating at different voltages. The direction control (DIR) pin determines the direction of data flow. When DIR is high, data flows from A to B. When DIR is low, data flows from B to A. The output enable (OE) pin controls the output state. When OE is low, the outputs are enabled. When OE is high, the outputs are in a high-impedance state.

The device is commonly used in systems where different components operate at different voltage levels, such as microcontrollers interfacing with memory or peripherals. It provides a reliable and efficient way to transfer data between these components while ensuring signal integrity and minimizing power consumption.