Overview
The SN75176BD from Texas Instruments is a differential bus transceiver designed for bidirectional data communication on multipoint bus transmission lines. This integrated circuit is tailored for balanced transmission lines and complies with ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, as well as ITU Recommendations V.11 and X.27. The device combines a 3-state differential line driver and a differential input line receiver, both operating from a single 5-V power supply. It features individual driver and receiver enables, wide positive and negative input/output bus voltage ranges, and thermal shutdown protection for line-fault conditions.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Package Type | Surface Mount | SOIC-8 | |
| Pin Count | 8 | ||
| Input Type | Differential | ||
| Number of Transmitters | 1 | ||
| Receiver Signal Type | Differential | ||
| Minimum Operating Temperature | 0°C | ||
| Maximum Operating Temperature | 70°C | ||
| Dimensions | 4.9 x 3.91 x 1.58 mm | ||
| Driver Output Capability | ±60 mA Max | ||
| Receiver Input Impedance | 12 kΩ Min | ||
| Receiver Input Sensitivity | ±200 mV | ||
| Receiver Input Hysteresis | 50 mV Typ |
Key Features
- Bidirectional transceivers for multipoint transmission on long bus lines in noisy environments.
- Meets or exceeds 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.
- Driver output capability of up to ±60 mA with positive and negative current limiting and thermal shutdown protection.
- Receiver features a minimum input impedance of 12 kΩ, an input sensitivity of ±200 mV, and a typical input hysteresis of 50 mV.
- Operates from a single 5-V power supply.
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.
- Low-speed RS485 communication (5 Mbps or less).
Q & A
- What is the primary function of the SN75176BD?
The SN75176BD is a differential bus transceiver designed for bidirectional data communication on multipoint bus transmission lines.
- What standards does the SN75176BD 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 power supply requirement for the SN75176BD?
The device operates from a single 5-V power supply.
- What is the maximum driver output capability of the SN75176BD?
The driver can handle up to ±60 mA of sink or source current.
- What protection features does the SN75176BD have?
The device features positive and negative current limiting and thermal shutdown protection for line-fault conditions.
- What is the receiver input impedance of the SN75176BD?
The receiver has a minimum input impedance of 12 kΩ.
- What is the typical input hysteresis of the receiver in the SN75176BD?
The receiver has a typical input hysteresis of 50 mV.
- What are the operating temperature ranges for the SN75176BD?
The device operates from 0°C to 70°C.
- What types of applications is the SN75176BD suitable for?
The device is suitable for various applications including chemical and gas sensors, digital signage, HMI, motor controls, TETRA Base stations, telecom towers, weigh scales, and wireless repeaters.
- What is the package type and pin count of the SN75176BD?
The device is available in an SOIC-8 package with 8 pins.
