Overview
The SN75ALS172A, produced by Texas Instruments, is a quadruple differential line driver designed to meet the requirements of ANSI standards EIA/TIA-422-B and RS-485, as well as ITU Recommendation V.11. This device features high-speed, advanced low-power Schottky circuitry and is optimized for balanced multipoint bus transmission at rates of up to 20 Mbaud. It is particularly suited for applications in noisy environments and offers several protective features such as thermal shutdown and current limiting.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Input Voltage (VI) | -0.3 | 7 | V | |
| Output Voltage Range (VO) | -9 | 14 | 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 | |
| Storage Temperature Range (Tstg) | -65 | 150 | °C |
Key Features
- Meets or exceeds ANSI standards EIA/TIA-422-B and RS-485, and ITU Recommendation V.11.
- High-speed advanced low-power Schottky circuitry.
- Designed for 20-MBaud operation in both serial and parallel applications.
- Designed for multipoint transmission on long bus lines in noisy environments.
- Low supply-current requirements: 55 mA max.
- Wide positive and negative input/output bus-voltage ranges.
- Driver output capacity: ±60 mA.
- Thermal shutdown protection.
- Driver positive and negative current limiting.
- Logically interchangeable with SN75172.
Applications
- Motor drives.
- Factory automation and control.
- Multipoint bus transmission in noisy environments.
Q & A
- What are the key standards that the SN75ALS172A meets or exceeds?
The SN75ALS172A meets or exceeds ANSI standards EIA/TIA-422-B and RS-485, as well as ITU Recommendation V.11.
- What is the maximum baud rate supported by the SN75ALS172A?
The SN75ALS172A is designed for operation at rates of up to 20 Mbaud.
- What type of circuitry is used in the SN75ALS172A?
The SN75ALS172A uses high-speed advanced low-power Schottky circuitry.
- What is the maximum supply current requirement of the SN75ALS172A?
The maximum supply current requirement is 55 mA.
- What protective features does the SN75ALS172A have?
The SN75ALS172A features thermal shutdown protection and driver positive and negative current limiting.
- What is the operating temperature range of the SN75ALS172A?
The device is characterized for operation from 0°C to 70°C.
- What are the common applications of the SN75ALS172A?
The SN75ALS172A is commonly used in motor drives and factory automation and control.
- Is the SN75ALS172A logically interchangeable with other devices?
Yes, the SN75ALS172A is logically interchangeable with the SN75172.
- What is the driver output capacity of the SN75ALS172A?
The driver output capacity is ±60 mA.
- What are the package options available for the SN75ALS172A?
The SN75ALS172A is available in SOIC (DW) and PDIP (N) packages.
