Overview
The SN75173DR, produced by Texas Instruments, is a Quadruple Differential Line Receiver designed to meet the requirements of various industry standards including TIA/EIA-422-B, TIA/EIA-423-B, TIA/EIA-485-A, and several ITU recommendations. This device is optimized for balanced multipoint bus transmission at rates up to 10 megabits per second. It features four differential line receivers with 3-state outputs, making it suitable for noisy environments and long bus lines. The SN75173DR is characterized for operation from 0°C to 70°C and is available in several package options, including SOIC and PDIP.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Common-mode Input Voltage (VIC) | -12 | 12 | V | |
| Differential Input Voltage (VID) | -12 | 12 | V | |
| High-level Enable-input Voltage (VIH) | 2 | V | ||
| Low-level Enable-input Voltage (VIL) | 0.8 | V | ||
| High-level Output Current (IOH) | -400 | μA | ||
| Low-level Output Current (IOL) | 16 | mA | ||
| Operating Free-air Temperature (TA) | 0 | 70 | °C | |
| Input Sensitivity | ±200 | mV | ||
| Input Hysteresis | 50 | mV | ||
| High Input Impedance | 12 | kΩ |
Key Features
- Meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-423-B, TIA/EIA-485-A, and several ITU recommendations.
- Designed for multipoint bus transmission on long bus lines in noisy environments.
- 3-State outputs.
- Common-mode input voltage range of –12 V to 12 V.
- Input sensitivity of ±200 mV.
- Input hysteresis of 50 mV typical for increased noise immunity.
- High input impedance of 12 kΩ minimum.
- Operates from a single 5-V supply.
- Low power requirements.
- Fail-safe design ensures outputs are always high if inputs are open-circuited.
- Optimized performance when used with the SN75172 or SN75174 quad differential line drivers.
Applications
- Motor drives.
- Factory automation and control.
- Multipoint bus transmission systems.
- Noisy industrial environments requiring robust communication.
Q & A
- What are the main standards that the SN75173DR complies with?
The SN75173DR meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-423-B, TIA/EIA-485-A, and several ITU recommendations.
- What is the operating temperature range for the SN75173DR?
The SN75173DR operates from 0°C to 70°C.
- What is the common-mode input voltage range of the SN75173DR?
The common-mode input voltage range is –12 V to 12 V.
- What is the input sensitivity of the SN75173DR?
The input sensitivity is ±200 mV.
- Does the SN75173DR have 3-state outputs?
- What is the typical input hysteresis of the SN75173DR?
The typical input hysteresis is 50 mV.
- What is the minimum high input impedance of the SN75173DR?
The minimum high input impedance is 12 kΩ.
- What is the supply voltage for the SN75173DR?
The supply voltage is 5 V.
- What happens to the outputs if the inputs are open-circuited?
If the inputs are open-circuited, the outputs are always high due to the fail-safe design.
- Which differential line drivers are recommended for use with the SN75173DR?
The SN75172 or SN75174 quad differential line drivers are recommended for optimum performance.
