Overview
The SN75176B differential bus transceiver, produced by Texas Instruments, is designed for bidirectional data communication on multipoint bus transmission lines. It is optimized 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. This device combines a 3-state differential line driver and a differential input line receiver, both operating from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, which can be connected externally to function as a direction control. This makes the SN75176B suitable for party-line applications and multipoint transmission in noisy environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | 0 to 70 | °C |
| Package Type | PDIP, SOIC, SOP | - |
| Number of Pins | 8 | - |
| Supply Voltage | 5 | V |
| Driver Output Current | ±60 | mA |
| Receiver Input Impedance | 12 kΩ | - |
| Receiver Input Sensitivity | ±200 mV | - |
| Receiver Input Hysteresis | 50 mV | - |
| Thermal Shutdown Temperature | Approximately 150°C | - |
Key Features
- Bidirectional transceivers for multipoint bus transmission lines.
- Meet or exceed ANSI standards TIA/EIA-422-B and TIA/EIA-485-A, and ITU Recommendations V.11 and X.27.
- Designed for multipoint transmission on long bus lines in noisy environments.
- 3-State driver and receiver outputs.
- Individual driver and receiver enables.
- Wide positive and negative input/output bus voltage ranges.
- ± 60-mA Maximum driver output capability.
- Thermal shutdown protection and driver positive and negative current limiting.
- Minimum Receiver Input Impedance of 12 kΩ and input sensitivity of ±200 mV.
- Typical receiver input hysteresis of 50 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 primary function of the SN75176B?
The SN75176B is a differential bus transceiver designed for bidirectional data communication on multipoint bus transmission lines.
- What standards does the SN75176B comply with?
The SN75176B 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 operating voltage of the SN75176B?
The SN75176B operates from a single 5-V power supply.
- What is the maximum driver output current of the SN75176B?
The maximum driver output current is ±60 mA.
- What is the thermal shutdown temperature of the SN75176B?
The thermal shutdown temperature is approximately 150°C.
- What are the key applications of the SN75176B?
The SN75176B is used in various applications including chemical and gas sensors, digital signage, HMI, motor controls, TETRA Base stations, telecom towers, weigh scales, and wireless repeaters).
- What types of packages are available for the SN75176B?
The SN75176B is available in PDIP, SOIC, and SOP packages.
- What is the receiver input impedance of the SN75176B?
The minimum receiver input impedance is 12 kΩ.
- What is the receiver input sensitivity of the SN75176B?
The receiver input sensitivity is ±200 mV.
- Does the SN75176B have thermal protection?
Yes, the SN75176B features thermal shutdown protection and driver positive and negative current limiting.
