Overview
The SN75ALS173NSR is a monolithic quadruple differential line receiver with 3-state outputs, designed and manufactured by Texas Instruments. This device is engineered to meet the requirements of various industry standards, including ANSI EIA/TIA-422-B, EIA/TIA-423-B, RS-485, and several ITU recommendations such as V.10, V.11, X.26, and X.27. It utilizes advanced low-power Schottky technology to provide high-speed operation without significant power consumption. The device is suitable for multipoint bus transmission on long bus lines in noisy environments and features high input impedance, input hysteresis for noise immunity, and a common-mode input voltage range of –12 V to 12 V. Although the SN75ALS173NSR is now obsolete, its specifications and features remain relevant for understanding its capabilities.
Key Specifications
| Parameter | Min | Nom | 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 | |
| Input Sensitivity | ±200 | mV | ||
| Input Hysteresis | 50 | mV (typical) | ||
| Input Impedance | 12 | kΩ (minimum) | ||
| Supply Current (ICC) | 16 | 27 | mA (no load, outputs enabled) | |
| Operating Temperature Range (TA) | 0 | 70 | °C | |
| Storage Temperature Range (Tstg) | -65 | 150 | °C | |
| Propagation Delay Time (tPHL, tPLH) | 9 | 18 | 27 | ns |
Key Features
- Meets or exceeds the requirements of ANSI EIA/TIA-422-B, EIA/TIA-423-B, and RS-485 standards.
- Compliant with ITU recommendations V.10, V.11, X.26, and X.27.
- 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: ±200 mV.
- Input hysteresis: 50 mV typical.
- High input impedance: 12 kΩ minimum.
- Operates from a single 5-V supply.
- Low supply-current requirement: 27 mA maximum.
Applications
- Motor drives.
- Factory automation and control.
- Multipoint bus transmission systems.
- Noisy industrial environments requiring high noise immunity.
Q & A
- What are the main standards that the SN75ALS173NSR complies with?
The SN75ALS173NSR meets or exceeds the requirements of ANSI EIA/TIA-422-B, EIA/TIA-423-B, RS-485, and several ITU recommendations such as V.10, V.11, X.26, and X.27.
- What is the operating temperature range of the SN75ALS173NSR?
The device operates from 0°C to 70°C.
- What is the common-mode input voltage range of the SN75ALS173NSR?
The common-mode input voltage range is –12 V to 12 V.
- What is the input sensitivity of the SN75ALS173NSR?
The input sensitivity is ±200 mV.
- Does the SN75ALS173NSR have 3-state outputs?
- What is the supply voltage requirement for the SN75ALS173NSR?
The device operates from a single 5-V supply, with a range of 4.75 V to 5.25 V.
- What are the typical applications of the SN75ALS173NSR?
The device is commonly used in motor drives, factory automation and control, and multipoint bus transmission systems in noisy environments.
- Is the SN75ALS173NSR still in production?
No, the SN75ALS173NSR is now obsolete and no longer in production by Texas Instruments.
- What is the maximum supply current for the SN75ALS173NSR?
The maximum supply current is 27 mA when the outputs are enabled.
- What is the propagation delay time for the SN75ALS173NSR?
The propagation delay time (tPHL, tPLH) is between 9 ns and 27 ns.
