NXP 74AVC8T245BQ,118: An 8-Bit Dual-Supply Bidirectional Voltage Level Translator with 3-State Outputs

In modern electronic systems, the need to interface between components or subsystems operating at different voltage levels is ubiquitous. This is where voltage level translators become critical components, ensuring seamless and reliable data exchange. The NXP 74AVC8T245BQ,118 is a premier solution designed to address this exact challenge, offering high-performance bidirectional translation across eight channels.

This integrated circuit is an 8-bit bidirectional translator featuring two separate configurable power supply rails. Port A is designed to be supplied with voltages from 1.2 V to 3.6 V, while Port B can handle a broader range from 1.2 V to 4.5 V. This flexibility allows the IC to bridge the gap between a wide array of modern logic families, from older 3.3V systems to newer processors and memories operating at 1.5V, 1.8V, or 2.5V, and even up to 4.5V for specific applications.

A key feature of this device is its bidirectional capability, which is controlled by the Direction Control (DIR) input. A single high or low signal on the DIR pin determines the direction of data flow for all eight bits simultaneously, simplifying system design and control. Furthermore, the 3-state outputs are a significant advantage. They allow the outputs to be put into a high-impedance state (Hi-Z), which is essential for preventing bus contention in multi-master systems, such as those using I²C or SPI, or when connecting to a shared data bus.

The 74AVC8T245BQ,118 also incorporates non-inverting logic, meaning the data is not inverted during the translation process. It is housed in a DHVQFN24 package, which is space-efficient and suitable for high-density PCB designs. The device is characterized for operation from -40°C to +125°C, making it robust enough for industrial and automotive environments. With its very low static and dynamic power consumption, it is an excellent choice for power-sensitive and battery-operated portable devices.

ICGOODFIND: The NXP 74AVC8T245BQ,118 stands out as a highly versatile and reliable solution for mixed-voltage system design. Its dual-supply architecture, bidirectional translation, and 3-state outputs provide designers with the necessary tools to ensure signal integrity and robust performance across a diverse range of applications, from consumer electronics to advanced automotive systems.

Keywords: Bidirectional Voltage Level Translator, Dual-Supply, 3-State Outputs, Direction Control, Non-Inverting.