Overview
The SN65ALS1176DR is a differential bus transceiver designed by Texas Instruments for bidirectional data communication on multipoint bus transmission lines. This device combines a 3-state differential line driver and a differential input line receiver, both operating from a single 5-V power supply. It is optimized for balanced transmission lines and complies with TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendations V.11 and X.27. The SN65ALS1176DR is characterized for operation over a temperature range of –25°C to 85°C, making it suitable for a variety of industrial and communication applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Input Voltage at Any Bus Terminal | -7 | 12 | V | |
| Operating Temperature Range | -25 | 85 | °C | |
| Storage Temperature Range | -65 | 150 | °C | |
| Lead Temperature (1/16 inch from case for 10 seconds) | 260 | °C | ||
| Data Rate | 35 | MBaud | ||
| Supply Current | 30 | mA |
Key Features
- Meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU recommendations V.11 and X.27.
- Operates at data rates up to 35 MBaud.
- Designed for multipoint transmission on long bus lines in noisy environments.
- Low supply-current requirement: 30 mA max.
- Wide positive and negative input/output bus-voltage ranges.
- Thermal-shutdown protection.
- Driver positive- and negative-current limiting.
- Receiver input hysteresis.
- Glitch-free power-up and power-down protection.
- Receiver open-circuit fail-safe design.
- Package options include plastic small-outline (D) package and (P) DIPs.
Applications
- PROFIBUS.
- Multipoint bus transmission lines.
- Party-line applications.
- Industrial automation and control systems.
- Long-distance data communication in noisy environments.
Q & A
- What is the operating temperature range of the SN65ALS1176DR?
The operating temperature range is –25°C to 85°C.
- What are the key standards that the SN65ALS1176DR complies with?
The device complies with TIA/EIA-422-B, TIA/EIA-485-A, and ITU recommendations V.11 and X.27.
- What is the maximum data rate supported by the SN65ALS1176DR?
The device supports data rates up to 35 MBaud.
- What type of power supply does the SN65ALS1176DR require?
The device operates from a single 5-V power supply.
- What are the package options available for the SN65ALS1176DR?
The device is available in plastic small-outline (D) package and (P) DIPs.
- Does the SN65ALS1176DR have thermal protection features?
Yes, it includes thermal-shutdown protection.
- What is the maximum supply current of the SN65ALS1176DR?
The maximum supply current is 30 mA.
- Is the SN65ALS1176DR suitable for noisy environments?
Yes, it is designed for multipoint transmission on long bus lines in noisy environments.
- Does the SN65ALS1176DR have glitch-free power-up and power-down protection?
Yes, it includes glitch-free power-up and power-down protection.
- What is the receiver input hysteresis feature in the SN65ALS1176DR?
The receiver input hysteresis helps in reducing noise sensitivity.
