Overview
The SN75174NE4 is a monolithic quadruple differential line driver designed by Texas Instruments. It is optimized for balanced multipoint bus transmission and meets or exceeds the requirements of ANSI standards EIA/TIA-422-B, RS-485, and ITU Recommendation V.11. This device is particularly suited for noisy environments and supports transmission rates up to 4 megabaud.
The SN75174NE4 features 3-state outputs, thermal shutdown protection, and positive- and negative-current limiting, ensuring robust performance and protection against line fault conditions. It operates from a single 5V supply and is characterized for operation from 0°C to 70°C.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| High-Level Input Voltage (VIH) | 2 | V | ||
| Low-Level Input Voltage (VIL) | 0.8 | V | ||
| Common-Mode Output Voltage (VOC) | -7 | 12 | V | |
| High-Level Output Current (IOH) | -60 | mA | ||
| Low-Level Output Current (IOL) | 60 | mA | ||
| Operating Free-Air Temperature (TA) | 0 | 70 | °C | |
| Differential-Output Delay Time (td(OD)) | 45 | 65 | ns | |
| Differential-Output Transition Time (tt(OD)) | 80 | 120 | ns |
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 are the primary standards that the SN75174NE4 complies with?
The SN75174NE4 meets or exceeds the requirements of ANSI standards EIA/TIA-422-B, RS-485, and ITU Recommendation V.11.
- What is the operating voltage range for the SN75174NE4?
The device operates from a single 5V supply, with a voltage range of 4.75V to 5.25V.
- What is the common-mode output voltage range of the SN75174NE4?
The common-mode output voltage range is –7V to 12V.
- Does the SN75174NE4 have thermal protection?
- What are the typical applications of the SN75174NE4?
The device is used in chemical and gas sensors, field transmitters, motor drives, and temperature sensors and controllers using Modbus.
- What is the maximum operating temperature for the SN75174NE4?
The device is characterized for operation from 0°C to 70°C.
- Does the SN75174NE4 support 3-state outputs?
- What is the differential-output delay time for the SN75174NE4?
The differential-output delay time is typically 65 ns, with a minimum of 45 ns and a maximum of 65 ns.
- Is the SN75174NE4 functionally interchangeable with other devices?
- What are the package options available for the SN75174NE4?
The device is available in PDIP (N package) and SOIC (DW package) options.
