Overview
The SN75176A differential bus transceiver, produced by Texas Instruments, is a monolithic integrated circuit designed for bidirectional data communication on multipoint bus-transmission lines. It is specifically tailored for balanced transmission lines and complies with ANSI Standard EIA/TIA-422-B and ITU Recommendation V.11. 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 SN75176A is suitable for party-line applications and is characterized for operation from 0°C to 70°C, making it versatile for various communication environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (8), PDIP (8) | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage | 5 | V |
| Driver Output Capability | ±60 | mA |
| Receiver Input Impedance | 12 kΩ (Min) | - |
| Receiver Input Sensitivity | ±200 mV | - |
| Receiver Input Hysteresis | 50 mV (Typ) | - |
| Thermal Shutdown Junction Temperature | Approximately 150 | °C |
Key Features
- Bidirectional Transceiver
- Meets or Exceeds the Requirements of ANSI Standards EIA/TIA-422-B and ITU Recommendations V.11
- 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
- Driver Positive-Current Limiting and Negative-Current Limiting
- Thermal-Shutdown Protection
- Operates From Single 5-V Supply
- Lower Power Requirements
Applications
- Low Speed RS485 communication (5 Mbps or less)
- Multipoint bus-transmission lines in noisy environments
- Party-line applications
- Transmission-line applications employing the SN75172, SN75174, SN75173, and SN75175 differential line drivers and receivers
Q & A
- What is the primary function of the SN75176A?
The SN75176A is a differential bus transceiver designed for bidirectional data communication on multipoint bus-transmission lines.
- What standards does the SN75176A comply with?
The SN75176A meets or exceeds the requirements of ANSI Standards EIA/TIA-422-B and ITU Recommendations V.11.
- What is the operating temperature range of the SN75176A?
The SN75176A operates from 0°C to 70°C.
- What is the maximum driver output current capability of the SN75176A?
The driver can handle loads up to ±60 mA of sink or source current.
- Does the SN75176A have thermal protection?
Yes, the SN75176A features thermal-shutdown protection that occurs at a junction temperature of approximately 150°C.
- What is the input sensitivity of the receiver?
The receiver has an input sensitivity of ±200 mV.
- Can the SN75176A be used in party-line applications?
Yes, the device is suitable for party-line applications due to its wide positive and negative common-mode voltage ranges.
- What is the power supply requirement for the SN75176A?
The SN75176A operates from a single 5-V power supply.
- Can the driver and receiver be individually enabled or disabled?
Yes, both the driver and receiver can be individually enabled or disabled using their respective enable pins.
- What are some common applications of the SN75176A?
The SN75176A is commonly used in low-speed RS485 communication, multipoint bus-transmission lines, and party-line applications.
