74LVXC3245MTCX 8-Bit Dual-Supply Voltage-Level Translator (TSSOP-24)

Description

The 74LVXC3245MTCX is a high-speed, 8-bit dual-supply configurable voltage-level translator. It is designed to act as an interface between two different voltage domains in mixed-voltage digital systems, such as a 3.3V system communicating with a 5V peripheral. This transceiver provides bidirectional data transfer, allowing data to flow from the A-port to the B-port or vice-versa, depending on the state of the Direction (DIR) control pin.

The device features 3-state outputs, which can be placed in a high-impedance (Hi-Z) state using the Output Enable ($\overline{OE}$) input. This is critical for bus-sharing applications where multiple devices are connected to the same communication line. By using two separate supply pins ($V_{CCA}$ and $V_{CCB}$), the 74LVXC3245 provides the necessary flexibility to maintain signal integrity and voltage level compatibility across complex system architectures.

Note: Product images are for illustrative purposes only. Because this device handles high-speed level translation between different voltage rails, please refer to the official datasheet for power-up sequence requirements and recommended decoupling practices to ensure stable operation.

Features

• Bidirectional Translation: 8-bit wide data path allows for simultaneous level shifting in either direction (A-to-B or B-to-A).
• Dual-Supply Architecture: Independent $V_{CCA}$ and $V_{CCB}$ rails allow for flexible voltage level interfacing.
• 3-State Outputs: High-impedance control pins ($\overline{OE}$) enable bus isolation.
• Configurable Direction: DIR pin allows dynamic control over data flow direction.
• High-Speed Switching: Designed for rapid signal propagation, suitable for modern memory and bus-interface applications.
• Package: TSSOP-24 (SMD) for space-saving integration on high-density PCBs.

Benefits

• Seamless Integration: Eliminates the need for complex, discrete level-shifting circuits between mixed-voltage components.
• Bus Conflict Prevention: 3-state control ensures that lines remain clear when the transceiver is not in use.
• System Reliability: Robust CMOS design protects against signal contention and ensures reliable logic levels across different power domains.

Applications

• Microprocessor Interfacing: Connecting 3.3V processors to 5V memory banks or I/O modules.
• Communication Buses: Level shifting for SPI, I2C, or parallel data buses in mixed-voltage environments.
• Peripheral Expansion: Safely adding 5V sensors or displays to 3.3V-based controller boards.
• General Embedded Systems: Essential for building bridges between legacy logic and modern low-voltage architecture.

Package Includes

• 1 x 74LVXC3245MTCX 8-Bit Dual Supply Transceiver IC (SMD-24)

Specifications