The SN75ALS191DR is a highly integrated differential bus transceiver designed by Texas Instruments (TI). This device is part of the industry-standard SN75ALS191 family and is intended for bidirectional data communication on multipoint bus-transmission lines. It is optimized for balanced transmission lines and conforms to the TIA/EIA-485-A standard.

Key Features

• Bus-Pin ESD Protection: The SN75ALS191DR features an impressive electrostatic discharge (ESD) protection on the bus pins, ensuring robustness and reliability in harsh environments.
• High-Speed Operation: This transceiver is capable of operating at high speeds, making it suitable for applications that require fast data transfer rates.
• Low Power Consumption: Designed with power efficiency in mind, the device consumes low power, which is ideal for energy-sensitive projects.
• Wide Operating Temperature Range: The device can operate over a wide range of temperatures, making it versatile for use in various industrial settings.
• Differential Bus Outputs: The differential bus outputs allow for reduced electromagnetic interference (EMI) and improved signal integrity over long cable runs.

Applications

The SN75ALS191DR is suitable for a multitude of applications, including:

• Industrial Control Systems
• Network Equipment
• Data Acquisition Systems
• Telecommunications Infrastructure

Technical Specifications

The SN75ALS191DR comes in a small-outline integrated circuit (SOIC) package and operates with a 5V power supply. It has an operating temperature range of -40°C to 85°C, which is standard for industrial-grade components. The transceiver includes differential driver and receiver circuits that are designed to offer common-mode voltage ranges from -7V to +12V, with up to 32 transceivers on the bus.

Ordering and Packaging

The device is sold under the part number SN75ALS191DR and is available in a tape and reel format for automated assembly processes. For prototyping or small-scale production, it may also be available in tube or individual packaging. As with all Texas Instruments products, it is recommended to source the SN75ALS191DR directly from authorized distributors or from TI's official website to ensure authenticity and to receive full technical support.