Overview
The SN75ALS176BDR, produced by Texas Instruments, is a differential bus transceiver designed for bidirectional data communication on multipoint bus transmission lines. This device meets or exceeds the requirements of ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, as well as ITU Recommendations V.11 and X.27. It combines a 3-state differential line driver and a differential input line receiver, both operating from a single 5-V power supply. The transceiver is optimized for balanced transmission lines and is suitable for party-line applications due to its wide positive and negative common-mode voltage ranges.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VCC Supply Voltage | 4.75 | 5 | 5.25 | V |
| Operating Temperature (SN75ALS176B) | 0 | - | 70 | °C |
| Differential Output Delay Time | 5 | 8 | 10 | ns |
| Pulse Skew | 0 | - | 5 | ns |
| Driver Output Current | -60 | - | 60 | mA |
| Receiver Input Impedance | 12 | - | - | kΩ |
| Receiver Input Sensitivity | ±200 | - | - | mV |
| Package Type | - | - | - | 8-SOIC |
Key Features
- Meet or exceed the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendations V.11 and X.27.
- Operate at data rates up to 35 Mbaud.
- Low supply-current requirements: 30 mA max.
- Wide positive and negative input/output bus-voltage ranges.
- Thermal shutdown protection and driver positive and negative current limiting.
- Receiver input hysteresis and glitch-free power-up and power-down protection.
- Receiver open-circuit fail-safe design.
- Individual driver and receiver enables for direction control.
- 3-state driver and receiver outputs.
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 are the primary standards that the SN75ALS176BDR complies with?
The SN75ALS176BDR meets or exceeds the requirements of 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 SN75ALS176BDR?
The device operates at data rates up to 35 Mbaud.
- What is the typical power supply voltage for the SN75ALS176BDR?
The device operates from a single 5-V power supply.
- What are the key protection features of the SN75ALS176BDR?
The device features thermal shutdown protection, driver positive and negative current limiting, and receiver input hysteresis.
- What types of motor controls can the SN75ALS176BDR be used in?
The device can be used in motor controls for AC induction, brushed and brush-less DC, low- and high-voltage, stepper motors, and permanent magnets.
- What is the package type of the SN75ALS176BDR?
The device is available in an 8-SOIC package.
- What is the operating temperature range for the SN75ALS176BDR?
The operating temperature range is from 0°C to 70°C.
- Does the SN75ALS176BDR have individual enables for the driver and receiver?
Yes, the device has individual driver and receiver enables that can be connected externally to function as a direction control.
- What is the receiver input sensitivity of the SN75ALS176BDR?
The receiver input sensitivity is ±200 mV.
- Is the SN75ALS176BDR suitable for party-line applications?
Yes, the device is suitable for party-line applications due to its wide positive and negative common-mode voltage ranges.
