SN74LVTH245ADW

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The SN74LVTH245A is a low-voltage differential bus transceiver designed for high-speed digital applications operating in the 3.3-3.6 V voltage range. It is designed for applications that transmit or receive 10 Mbps data signals, as well as for digital communication with other circuits. It is suitable for mixed-signal designs where a logic transfer is required between devices that operate at different voltage levels, such as NAND flash, NOR flash, and asynchronous RAM.

This differential bus transceiver is commonly used in applications like portable electronics, HDMI receivers and transmission, automotive infotainment and communication, computer systems, and data acquisition systems. It is a single driver/receiver with input and output 3.3 to 3.6-Vtolerant operation, high data-transfer rate and controlled slew rate for reduced EMI emissions. It also has input and output logic level displacement (D-Latch) which enables fast bus turnaround by allowing byte and frame delimiting.

Application Field

The SN74LVTH245A differential bus transceiver is suitable for a wide range of applications, including: data acquisition systems, embedded computers, portable electronics, HDMI receivers and transmission, automotive infotainment and communication, server systems, mobile phones, and computer system involving communications between devices operating at differing voltage levels.

It is used in applications that require high-speed data transfer in the 3.3-3.6 V environment. Its input and output logic levels are compatible with most microprocessors and digital logic devices allowing up to 10 Mbps data transmission across different voltages. It is also used as an arbitrary logic buffer with an input logic-level displacement capability, providing high-speed, low-power, multiplexed data and address buses.

Working Principle

The SN74LVTH245A uses the industry-standard bus transceiver design. It has two separate differential buses on its outputs, which operate as common signal lines to the outside world. At each signal line, the device accepts an input voltage and then drives a differentvoltage out the signal line\'s corresponding differential pair. Because of this, the device is considered an open-drain configuration and can be used to drive both low-power load and high-voltage applications. The output levels of the SN74LVTH245A can be adjusted by varying the supply voltage.

The SN74LVTH245A is powered by two separate power sources; one for logic and the other for data output. This allows the device to be active and drive signals while minimizing the power consumption of the system. For example, when a signal is input, only the logic power amplifier is active, not the data output power amplifier, enabling very low power consumption.

The SN74LVTH245A supports a wide range of signal levels, ranging from 3.3 to 3.6 V, allowing for faster data rates and lower power consumption. It also has very low propagation delay and skew, as well as a built-in sender detection circuit that automatically switches between data and address drivers when required. In addition, the device is equipped with a low propagation-delay output level window adjustment, which allows the device to be used in applications where timing of signals needs to be precisely adjusted.

The SN74LVTH245A is designed to minimize the EMI noise generated by digital signals by controlling the slew rate of the output signals. The slew rate of the device is adjustable and can be programmed for various applications. It also has a built-in offset-compensation circuit to ensure proper functionality when operating at high data transfer rates.

The SN74LVTH245A is an excellent choice for high-speed digital applications. It offers a low-voltage differential bus transceiver with input and output 3.3 to 3.6-Vtolerant operation, high data-transfer rate and controlled slew rate. Its input and output logic levels are compatible with microprocessors and digital logic devices and it supports a wide range of signal levels, allowing it to be used in many applications. The device has a built-in sender detection circuit, built-in offset-compensation circuit and adjustable slew rate, making it ideal for high-speed digital applications where timing and accuracy is important.

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