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 transceiver is suitable for party-line applications due to its wide positive and negative common-mode voltage ranges and is protected by features such as thermal shutdown and current limiting.
Key Specifications
| Specification | Value |
|---|---|
| Package | PDIP (8 pins), SOIC (8 pins), SOP (8 pins) |
| Operating Temperature Range | 0°C to 70°C |
| Power Supply | Single 5-V |
| Driver Output Capability | ± 60 mA |
| Receiver Input Impedance | 12 kΩ (minimum) |
| Receiver Input Sensitivity | ± 200 mV |
| Receiver Input Hysteresis | 50 mV (typical) |
| 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
- 3-State differential line driver and differential input line receiver
- Individual driver and receiver enables
- Wide positive and negative input/output bus voltage ranges
- Thermal shutdown protection and current limiting for line-fault conditions
- Operate from a single 5-V power supply
Applications
The SN75176B is suitable for various applications requiring reliable bidirectional data communication over long bus lines, particularly in noisy environments. These include:
- Industrial automation systems
- Process control systems
- Telecommunication systems
- Party-line applications
- Any system requiring balanced transmission lines and compliance with TIA/EIA-422-B and TIA/EIA-485-A standards
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 power supply requirement for the SN75176B?
The SN75176B operates from a single 5-V power supply.
- What is the maximum driver output capability of the SN75176B?
The driver can sink or source up to 60 mA of current.
- What protection features does the SN75176B have?
The device features thermal shutdown protection and current limiting for protection from line-fault conditions.
- What is the typical receiver input hysteresis of the SN75176B?
The typical receiver input hysteresis is 50 mV.
- What is the minimum receiver input impedance of the SN75176B?
The minimum receiver input impedance is 12 kΩ.
- What are the common applications of the SN75176B?
Common applications include industrial automation, process control, telecommunication systems, and party-line applications.
- What are the available package types for the SN75176B?
The SN75176B is available in PDIP (8 pins), SOIC (8 pins), and SOP (8 pins) packages.
- What is the operating temperature range of the SN75176B?
The operating temperature range is from 0°C to 70°C.
