SLLS236I October   1996  – June 2015 SN65LBC184 , SN75LBC184

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: Driver
    6. 6.6  Electrical Characteristics: Receiver
    7. 6.7  Driver Switching Characteristics
    8. 6.8  Receiver Switching Characteristics
    9. 6.9  Dissipation Ratings
    10. 6.10 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Data Rate and Bus Length
        2. 9.2.1.2 Stub Length
        3. 9.2.1.3 Bus Loading
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 SN65LBC184 Test Description
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Integrated Transient Voltage Suppression
  • ESD Protection for Bus Terminals Exceeds:
    ±30 kV IEC 61000-4-2, Contact Discharge
    ±15 kV IEC 61000-4-2, Air-Gap Discharge
    ±15 kV EIA/JEDEC Human Body Model
  • Circuit Damage Protection of 400-W Peak (Typical) Per IEC 61000-4-5
  • Controlled Driver Output-Voltage Slew Rates Allow Longer Cable Stub Lengths
  • 250-kbps in Electrically Noisy Environments
  • Open-Circuit Fail-Safe Receiver Design
  • 1/4 Unit Load Allows for 128 Devices Connected on Bus
  • Thermal Shutdown Protection
  • Power-Up and Power-Down Glitch Protection
  • Each Transceiver Meets or Exceeds the Requirements of TIA/EIA-485 (RS-485) and ISO/IEC 8482:1993(E) Standards
  • Low Disabled Supply Current 300 μA Maximum
  • Pin Compatible With SN75176

2 Applications

  • Industrial Networks
  • Utility Meters
  • Motor Control

3 Description

The SN75LBC184 and SN65LBC184 devices are differential data line transceivers in the trade-standard footprint of the SN75176 with built-in protection against high-energy noise transients. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable over most existing devices. Use of these circuits provides a reliable low-cost direct-coupled (with no isolation transformer) data line interface without requiring any external components.

The SN75LBC184 and SN65LBC184 can withstand overvoltage transients of 400-W peak (typical). The conventional combination wave called out in IEC 61000-4-5 simulates the overvoltage transient and models a unidirectional surge caused by overvoltages from switching and secondary lightning transients.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN65LBC184,
SN75LBC184		 SOIC (8) 4.90 mm × 3.91 mm
PDIP (8) 9.81 mm × 6.35 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Logic Symbol

SN65LBC184 SN75LBC184 log_sym_lls236.gif

NOTE:

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.