STMicroelectronics 74VCXHQ163245TBR: 16-Bit Dual Supply Translating Transceiver

The 74VCXHQ163245TBR from STMicroelectronics is a high-speed, low-power, 16-bit dual-supply bus transceiver designed to interface between a 3.3V bus and a 1.8V or 2.5V bus in mixed 3.3V/1.8V or 3.3V/2.5V supply systems. It is part of the VCX family, which provides a wide voltage range with the capability to translate I/O voltages during operation.

This transceiver is equipped with two separate configurable power-supply rails. The A port is designed to track VCCA, which accepts any supply voltage from 1.4V to 3.6V, while the B port is designed to track VCCB, which accepts any supply voltage from 2.3V to 3.6V. This dual-supply voltage feature enables the device to perform logic-level translations between different voltage domains, making it ideal for data communication between circuits operating at different voltage levels.

Featuring a 16-bit non-inverting bus transceiver with 3-state outputs, the 74VCXHQ163245TBR is suitable for bidirectional communication between two buses. The direction of data transmission is determined by the DIR input, while the output enable (OE) input can disable the device, allowing the outputs to assume a high-impedance state. This is particularly useful in preventing data contention on the bus.

With its capability to operate at high speeds while maintaining low power consumption, this device includes optimized circuitry that minimizes the propagation delay, ensuring fast data transfer rates. It is also provided in a TSSOP package, which is optimized for reduced space on PCBs.

Key features of the 74VCXHQ163245TBR include its wide data I/O voltage range, high-speed operation, low quiescent current, and the ability to drive heavily loaded buses with up to 24mA balanced drive at both the high and low sides. This makes the transceiver a reliable choice for interfacing applications in telecom, computing, and high-speed data processing systems.