Overview
The SN75174DWR is a monolithic quadruple differential line driver produced by Texas Instruments. It is designed to meet or exceed the requirements of ANSI standards EIA/TIA-422-B, RS-485, and ITU Recommendation V.11. This device is optimized for balanced multipoint bus transmission at rates up to 4 megabaud and is suitable for party-line applications in noisy environments. The SN75174DWR features 3-state outputs and provides positive- and negative-current limiting along with thermal shutdown protection for line fault conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | -0.3 | 7 | V | |
| VO (Output Voltage Range) | -10 | 15 | V | |
| VI (Input Voltage) | -0.3 | 5.5 | V | |
| TA (Operating Free-Air Temperature Range) | 0 | 70 | °C | |
| TLead (Lead Temperature 1/16 inch from case for 10 seconds) | 260 | °C | ||
| Tstg (Storage Temperature Range) | -65 | 150 | °C | |
| Package | 20-SOIC (DW) | |||
| Pins | 20 |
Key Features
- Meets or exceeds the requirements of ANSI standards EIA/TIA-422-B, 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 enable.
- Thermal shutdown protection.
- Positive- and negative-current limiting.
- Operates from a single 5V supply.
- Low power requirements.
- Functionally interchangeable with MC3487.
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 SN75174DWR?
The SN75174DWR is a quadruple differential line driver designed for balanced multipoint bus transmission.
- What standards does the SN75174DWR comply with?
The device meets or exceeds the requirements of ANSI standards EIA/TIA-422-B, RS-485, and ITU Recommendation V.11.
- What is the operating temperature range of the SN75174DWR?
The device operates from 0°C to 70°C.
- What type of protection does the SN75174DWR offer against line faults?
The device provides thermal shutdown protection and positive- and negative-current limiting.
- What is the common-mode output voltage range of the SN75174DWR?
The common-mode output voltage range is –7V to 12V.
- Can the SN75174DWR be used in noisy environments?
Yes, it is designed for multipoint transmission on long bus lines in noisy environments.
- What is the supply voltage requirement for the SN75174DWR?
The device operates from a single 5V supply.
- Is the SN75174DWR functionally interchangeable with other devices?
Yes, it is functionally interchangeable with the MC3487.
- What type of package is the SN75174DWR available in?
The device is available in a 20-SOIC (DW) package.
- What are some common applications of the SN75174DWR?
Common applications include chemical and gas sensors, field transmitters, motor drives, and temperature sensors and controllers using Modbus.
