Texas Instruments

SN75ALS191DR  

Drivers, Receivers, Transceivers

SN75ALS191DR Description

The SN75ALS191DR is a high-performance driver IC designed for RS422 and RS485 communication protocols. Manufactured by Texas Instruments, this interface IC chip is part of the 75ALS191 family and is known for its robust performance and reliability. The SN75ALS191DR features two drivers and zero receivers, making it ideal for applications requiring unidirectional data transmission. It operates within a supply voltage range of 4.75V to 5.25V and can function effectively within an operating temperature range of 0°C to 70°C. The device is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) format and is available in tape and reel (TR) packaging for surface mount applications.

SN75ALS191DR Features

• Number of Drivers/Receivers: The SN75ALS191DR includes two drivers and zero receivers, which is optimal for applications that require unidirectional data transmission.
• Operating Temperature: With an operating temperature range of 0°C to 70°C, the SN75ALS191DR is suitable for a wide range of industrial and commercial environments.
• Supply Voltage: The device operates within a supply voltage range of 4.75V to 5.25V, ensuring compatibility with standard 5V power supplies.
• Mounting Type: The surface mount technology (SMT) ensures ease of integration into modern PCB designs, facilitating automated assembly processes.
• Compliance and Standards: The SN75ALS191DR is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety regulations. It also falls under the HTSUS code 8542.39.0001.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the device is highly resistant to moisture, reducing the risk of damage during storage and handling.
• Protocol Support: The SN75ALS191DR supports both RS422 and RS485 protocols, making it versatile for various communication interfaces.

SN75ALS191DR Applications

The SN75ALS191DR is well-suited for a variety of industrial and commercial applications where reliable data transmission is crucial. Some specific use cases include:

• Industrial Automation: The device is ideal for controlling and monitoring industrial equipment, where RS422 and RS485 protocols are commonly used for long-distance communication.
• Telecommunications: The SN75ALS191DR can be used in telecommunication systems for data transmission over long distances with minimal signal degradation.
• Data Acquisition Systems: In data acquisition systems, the SN75ALS191DR ensures accurate and reliable data transmission from sensors to central processing units.
• Instrumentation: The device is suitable for instrumentation applications where precise control and data transmission are required.

Conclusion of SN75ALS191DR

The SN75ALS191DR is a versatile and reliable driver IC designed for RS422 and RS485 communication protocols. With its robust performance, wide operating temperature range, and compliance with industry standards, it is an excellent choice for a variety of applications. The surface mount technology and moisture sensitivity level of 1 make it highly durable and easy to integrate into modern PCB designs. Whether used in industrial automation, telecommunications, data acquisition systems, or instrumentation, the SN75ALS191DR offers superior performance and reliability, making it a standout choice in its category.

SN75ALS191DR Documents

Download datasheets and manufacturer documentation for SN75ALS191DR

Datasheets :

SN75ALS191      

HTML Datasheet :

SN75ALS191      

PCN Design/Specification :

Mult Devices Font 21/Apr/2018       Design 25/Feb/2022