DS8921AM

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The DS8921AM from Texas Instruments is a high-speed RS-422/RS-485 transceiver and line driver with differential inputs and outputs. It is designed for applications with data rates up to 200 Mbps and line lengths up to 1200m. The DS8921AM is ideal for high-speed data transmission in industrial and communication systems, as well as for mission critical applications such as automotive and aerospace. The device has integrated ESD protection, logic-level inputs, low power consumption, and low-level leakage current. It is also compatible with all major high-speed bus technologies such as CAN, USB, Ethernet, Fibre Channel, and Serial ATA.

The DS8921AM is an attractive solution for a wide range of applications. Its flexible design allows engineers to easily configure the device to meet their system requirements. The device features a built-in receiver with adjustable input voltage thresholds to handle inputs with different levels. It also has low-level leakage current to reduce system power consumption. Additionally, the DS8921AM is designed to provide robust ESD protection, allowing it to withstand high-voltage surges.

The DS8921AM is designed to provide reliable performance under wide temperature ranges. Its onboard power-up/power-down safety circuit prevents the device from starting up/shutting down improperly due to supply voltage fluctuations. The device also includes an on-chip temperature measurement and monitoring circuit, ensuring thermal stability.

In terms of its operational characteristics, the DS8921AM uses a differential input and output driver with proprietary control logic. This arrangement allows for very precise control of the driver amplitudes and enables the device to operate at high-speed data rates with minimal jitter. The device also includes a wide range of control signals, including open-collector enable, data-direction control, sleep mode, fault condition detect and recovery, and enable/disable modes. Additionally, the device has a triple-byte serial interface to enable communications with remote devices.

The transceiver is powered by a single 3.3V power supply. The device can be powered either through a wide range of logic-level ports, or through an on-board DC-DC converter. The power supply ensures that the device meets the wide range of power requirements that may be encountered in industrial, automotive, or other applications.

The DS8921AM is compliant with the EIA/TIA standards, including the RS-422 and RS-485 standards. This enables the device to be used in essentially any system requiring high-speed data transfer and long line lengths. Additionally, the device meets the CE safety requirements of the EU, and is UL approved. The device is also RoHS compliant and has a high level of EMI immunity.

In conclusion, the DS8921AM from Texas Instruments provides a high performance, low power, and cost effective solution for high-speed data transmission over long line lengths. Its wide range of features, extensive testing, and certification make it an ideal solution for industrial and automotive applications. By incorporating proprietary control logic, the device ensures precise control of driver amplitudes and ensures reliable operation at high-speed data rates.

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