NXP 74AVC16T245DGG: A 16-Bit Dual-Supply Bidirectional Voltage Level Translator with 3-State Outputs
In modern electronic systems, the need to interface between components operating at different voltage levels is a common and critical challenge. The NXP 74AVC16T245DGG addresses this need as a high-performance 16-bit dual-supply bidirectional voltage level translator, designed to enable seamless data transfer across voltage domains. This integrated circuit is particularly vital in mixed-voltage environments, such as those found in communication infrastructure, computing platforms, and portable devices, where processors, memory, and peripherals often operate at different logic levels.
A standout feature of this translator is its dual supply voltage configuration. The device utilizes two separate power supply pins: VCC(A) for the A-port and VCC(B) for the B-port. These supplies can range from 1.2 V to 3.6 V, allowing it to translate between any voltage levels within this wide spectrum. This flexibility makes it indispensable for bridging legacy 3.3V systems with modern low-voltage 1.5V or 1.8V ICs, ensuring future-proof and versatile designs.
The bidirectional capability of each of its 16 channels is controlled by a dedicated direction control pin (DIR). A single DIR signal determines the data flow direction for all bits, simplifying system control. When DIR is set high, data is transmitted from the A-port (lower voltage) to the B-port (higher voltage), and when set low, the direction is reversed. This eliminates the need for separate unidirectional translators, saving board space and reducing component count.
Furthermore, the device incorporates 3-state outputs, which place the output drivers in a high-impedance state. This feature is crucial for preventing bus contention in multi-master systems, such as those using I²C or SPI, where multiple devices share the same data lines. It allows the translator to be effectively disconnected from the bus when not active, ensuring data integrity and system stability.
The 74AVC16T245DGG is also engineered for high-speed operation. With support for fast data transmission rates, it is suitable for applications involving high-speed digital interfaces. Its architecture minimizes propagation delay and skew between bits, which is essential for maintaining signal timing integrity in parallel data buses. Packaged in a TSSOP-48 form factor, it offers a compact footprint for space-constrained PCB designs.
ICGOOODFIND: The NXP 74AVC16T245DGG is an optimal solution for complex level-shifting tasks, offering a robust combination of wide voltage range translation, bidirectional data flow, and 3-state output control in a single, space-efficient package.
Keywords: Level Translator, Bidirectional, Dual-Supply, 3-State Outputs, Voltage Translation
