SLLS101F July   1985  – January 2015 SN65176B , SN75176B

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Simplified Schematic
  5. Revision History
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Recommended Operating Conditions
    3. 7.3 Thermal Information
    4. 7.4 Electrical Characteristics - Driver
    5. 7.5 Electrical Characteristics - Receiver
    6. 7.6 Switching Characteristics - Driver
    7. 7.7 Switching Characteristics - Receiver
    8. 7.8 Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Driver
      2. 9.3.2 Receiver
    4. 9.4 Device Functional Modes
      1. 9.4.1 Device Powered
      2. 9.4.2 Device Unpowered
      3. 9.4.3 Symbol Cross Reference
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
  • P|8
  • PS|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Bidirectional Transceivers
  • Meet or Exceed the Requirements of 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 Max Driver Output Capability
  • Thermal Shutdown Protection
  • Driver Positive and Negative Current Limiting
  • 12-kΩ Min Receiver Input Impedance
  • ± 200-mV Receiver Input Sensitivity
  • 50-mV Typ Receiver Input Hysteresis
  • Operate From Single 5-V Supply

2 Applications

  • Chemical/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

3 Description

The SN65176B and SN75176B differential bus transceivers are designed for bidirectional data communication on multipoint bus transmission lines. They are designed for balanced transmission lines and meet ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.11 and X.27.

The SN65176B and SN75176B devices combine a 3-state differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, that can be connected together externally to function as a direction control. The driver differential outputs and the receiver differential inputs are connected internally to form differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. These ports feature wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications.

The driver is designed for up to 60 mA of sink or source current. The driver features positive and negative current limiting and thermal shutdown for protection from line-fault conditions. Thermal shutdown is designed to occur at a junction temperature of approximately 150°C. The receiver features a minimum input impedance of 12 kΩ, an input sensitivity of ±200 mV, and a typical input hysteresis of 50 mV.

Device Information(1)

PART NUMBER PACKAGE (PIN) BODY SIZE (NOM)
SNx5176 SOIC (8) 4.90 mm × 3.91 mm
PDIP (8) 9.81 mm × 6.35 mm
SOP (8) 6.20 mm × 5.30 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Simplified Schematic

logic_dia_lls101.gif