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 due to its wide positive and negative common-mode voltage ranges and is characterized for operation from 0°C to 70°C.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Operating Temperature Range (TA) | 0 | 70 | °C | |
| Driver Output Current (IOH/IOL) | -60 | 60 | mA | |
| Receiver Input Impedance | 12 | kΩ | ||
| Receiver Input Sensitivity | ±200 | mV | ||
| Receiver Input Hysteresis | 50 | mV | ||
| Package Types | PDIP (8 pins), SOIC (8 pins) |
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 Output Capability ±60 mA Max
- Thermal-Shutdown Protection
- Driver Positive-Current Limiting and Negative-Current Limiting
- Receiver Input Impedance 12 kΩ Min
- Receiver Input Sensitivity ±200 mV
- Receiver Input Hysteresis 50 mV Typ
- Operates From Single 5-V Supply
- Lower Power Requirements
Applications
- Low Speed RS485 communication (5 Mbps or less)
- For 10 Mbps, use SN75176B
- Transmission-line applications employing the SN75172 and SN75174 quadruple differential line drivers and SN75173 and SN75175 quadruple differential line 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 of the SN75176A?
The driver can handle loads up to 60 mA of sink or source current.
- What protection features does the SN75176A have?
The SN75176A features thermal shutdown, positive- and negative-current limiting, and receiver input hysteresis for protection.
- What is the input sensitivity of the receiver?
The receiver input sensitivity is ±200 mV.
- Can the SN75176A be used in noisy environments?
Yes, the SN75176A is designed for multipoint transmission on long bus lines in noisy environments.
- What power supply does the SN75176A operate from?
The SN75176A operates from a single 5-V power supply.
- What are the package types available for the SN75176A?
The SN75176A is available in PDIP (8 pins) and SOIC (8 pins) packages.
- What is the typical input hysteresis of the receiver?
The typical input hysteresis of the receiver is 50 mV.
- Can the driver and receiver enables be externally connected?
Yes, the driver and receiver enables can be externally connected together to function as a direction control.
