Overview
The SN75172DWR is a monolithic quadruple differential line driver produced by Texas Instruments. It is designed to meet the requirements of ANSI standards EIA/TIA-422-B and RS-485, as well as ITU Recommendation V.11. This device is optimized for balanced multipoint bus transmission at rates of up to 4 megabaud and is particularly suited for party-line applications in noisy environments. The SN75172DWR features 3-state outputs and provides thermal shutdown protection, positive- and negative-current limiting, and operates from a single 5V supply.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC-20 |
| Operating Temperature Range | 0°C to 70°C |
| Supply Voltage | 4.75 V to 5.25 V |
| Common-Mode Output Voltage Range | –7V to 12V |
| High-Level Output Current | –60 mA |
| Low-Level Output Current | 60 mA |
| Thermal Shutdown Temperature | Approximately 150°C |
| Protocol Compatibility | RS-422, RS-485 |
Key Features
- Meets or exceeds the requirements of ANSI standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11.
- Designed for multipoint transmission on long bus lines in noisy environments.
- 3-state outputs.
- Common-mode output voltage range of –7V to 12V.
- Active-high and active-low enables.
- Thermal shutdown protection and positive- and negative-current limiting.
- Operates from a single 5V supply.
- Logically interchangeable with AM26LS31.
Applications
- Chemical and gas sensors.
- Field transmitters: temperature sensors and pressure sensors.
- Motor drives: brushless DC and brushed DC.
- Temperature sensors and controllers using Modbus.
Q & A
- What is the primary function of the SN75172DWR?
The SN75172DWR is a monolithic quadruple differential line driver designed for balanced multipoint bus transmission.
- What standards does the SN75172DWR comply with?
The device meets or exceeds the requirements of ANSI standards EIA/TIA-422-B and RS-485, as well as ITU Recommendation V.11.
- What is the operating temperature range of the SN75172DWR?
The device operates from 0°C to 70°C.
- What is the common-mode output voltage range of the SN75172DWR?
The common-mode output voltage range is –7V to 12V.
- Does the SN75172DWR have thermal shutdown protection?
Yes, the device features thermal shutdown protection at approximately 150°C.
- What supply voltage does the SN75172DWR operate on?
The device operates from a single 5V supply (4.75 V to 5.25 V).
- Is the SN75172DWR logically interchangeable with other devices?
Yes, it is logically interchangeable with the AM26LS31.
- What are some typical applications of the SN75172DWR?
Typical applications include chemical and gas sensors, field transmitters, motor drives, and temperature sensors and controllers using Modbus.
- What package type is the SN75172DWR available in?
The device is available in a 20-pin SOIC package.
- Does the SN75172DWR have current limiting features?
Yes, the device features positive- and negative-current limiting.
