SN74AVC4T245RSVR: A Configurable Voltage Translation and 3-State Output 4-Bit Dual-Power Bus Transceiver

The SN74AVC4T245RSVR, manufactured by Texas Instruments (TI), is a versatile 4-bit dual-power bus transceiver designed for asynchronous communication between two data buses. This device features configurable voltage translation and three-state outputs, making it ideal for applications requiring bidirectional translation between different voltage nodes.

Key Features

• Configurable Voltage Translation: The SN74AVC4T245RSVR allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The A port is designed to track VCCA, which accepts any supply voltage from 1.2 V to 3.6 V, and the B port tracks VCCB, which also accepts a supply voltage within the same range.
• Three-State Outputs: The device provides three-state outputs, enabling high-impedance mode operation, which is useful for bus-holding applications or when the outputs need to be disabled.
• High-Speed Performance: The SN74AVC4T245RSVR supports high data rates, with a maximum of 380 Mbps for 1.8-V to 3.3-V translation. Lower data rates are supported for translations involving lower voltage nodes.
• Partial Power-Down Mode: The device includes an Ioff circuitry that disables the outputs, preventing damaging current backflow through the device when it is powered down. This feature is particularly useful in partial-power-down applications.
• Robust ESD Protection: The SN74AVC4T245RSVR offers excellent electrostatic discharge (ESD) protection, exceeding JESD 22 – 8000-V Human-Body Model, 150-V Machine Model, and 1000-V Charged-Device Model.
• Compact Package: The device is packaged in a UQFN-16 package, which is compact and suitable for surface-mount technology (SMT) assembly.

Applications

The SN74AVC4T245RSVR is designed for a wide range of applications, including:

• Personal Electronics: Ideal for use in smartphones, tablets, and other portable devices where low power consumption and high-speed data transmission are critical.
• Industrial Applications: Suitable for industrial automation systems, data communication interfaces, and other industrial environments where reliable and high-speed data transfer is required.
• Enterprise and Telecom: Can be used in enterprise and telecommunication systems for signal level shifting and data bus interfacing.

Operating Conditions

• Power Supply Voltage: VCCA and VCCB can range from 1.2 V to 3.6 V.
• Operating Temperature: The device operates within a temperature range of -40 °C to +85 °C.

Control Inputs

The control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode.

Conclusion

The SN74AVC4T245RSVR is a highly versatile and reliable 4-bit dual-power bus transceiver that offers configurable voltage translation and three-state outputs. Its high-speed performance, partial power-down mode, and robust ESD protection make it ideal for a wide range of applications, including personal electronics, industrial applications, and enterprise and telecommunication systems. With its compact UQFN-16 package, the SN74AVC4T245RSVR is easy to integrate into modern electronic designs.