Overview
The SN65176BD, produced by Texas Instruments, is a differential bus transceiver designed for bidirectional data communication on multipoint bus transmission lines. It combines a 3-state differential line driver and a differential input line receiver, both operating from a single 5-V power supply. This device is compliant with ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, as well as ITU Recommendations V.11 and X.27, making it suitable for various industrial and communication applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Free-Air Temperature | -40 | 105 | °C | |
| Supply Voltage | 4.75 | 5 | 5.25 | V |
| Driver Output Current | -60 | 60 | mA | |
| Receiver Input Impedance | 12 | kΩ | ||
| Receiver Input Sensitivity | ±200 | mV | ||
| Receiver Input Hysteresis | 50 | mV | ||
| Differential Output Delay Time | 15 | 22 | ns | |
| Differential Output Transition Time | 20 | 30 | ns |
Key Features
- Bidirectional transceivers for multipoint transmission on long bus lines in noisy environments.
- Meet or exceed ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, and ITU Recommendations V.11 and X.27.
- 3-State driver and receiver outputs with individual driver and receiver enables.
- Wide positive and negative input/output bus voltage ranges.
- Thermal shutdown protection and current limiting for line-fault conditions.
- Minimum input impedance of 12 kΩ and input sensitivity of ±200 mV.
Applications
- Chemical and gas sensors.
- Digital signage.
- HMI (human machine interfaces).
- Motor controls: AC induction, brushed and brush-less DC, low- and high-voltage, stepper motors, and permanent magnets.
- TETRA Base stations.
- Telecom towers: remote electrical tilt units (RET) and tower-mounted amplifiers (TMA).
- Weigh scales.
- Wireless repeaters.
Q & A
- What is the operating voltage of the SN65176BD?
The SN65176BD operates from a single 5-V power supply. - What are the temperature ranges for the SN65176BD?
The operating free-air temperature range is -40°C to 105°C. - What standards does the SN65176BD comply with?
The device complies with ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, as well as ITU Recommendations V.11 and X.27. - What is the maximum driver output current of the SN65176BD?
The maximum driver output current is ±60 mA. - What is the input impedance of the receiver?
The minimum input impedance of the receiver is 12 kΩ. - What is the input sensitivity of the receiver?
The input sensitivity of the receiver is ±200 mV. - Does the SN65176BD have thermal protection?
Yes, it features thermal shutdown protection at approximately 150°C junction temperature. - What are some common applications of the SN65176BD?
Applications include chemical and gas sensors, digital signage, HMI, motor controls, TETRA Base stations, telecom towers, weigh scales, and wireless repeaters. - How many devices can be connected on an RS-485 bus using the SN65176BD?
Up to 32 transceivers can be connected on an RS-485 bus. - What is the typical differential output transition time of the SN65176BD?
The typical differential output transition time is 30 ns.
