SNLS375C June   1998  – January 2015 DS26C31T

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Device Logic Diagram
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Recommended Operating Conditions
    3. 7.3 DC Electrical Characteristics
    4. 7.4 Switching Characteristics
    5. 7.5 Comparison Table of Switching Characteristics into “LS-Type” Load
    6. 7.6 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
  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
  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

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

1 Features

  • TTL Input Compatible
  • Typical Propagation Delays: 6 ns
  • Typical Output Skew: 0.5 ns
  • Outputs Will Not Load Line When VCC = 0 V
  • DS26C31T Meets the Requirements of EIA Standard RS-422
  • Operation From Single 5-V Supply
  • Tri-State Outputs for Connection to System Buses
  • Low Quiescent Current
  • Available in Surface Mount
  • Mil-Std-883C Compliant

2 Applications

    Differential Line Driver for RS-422 Applications

3 Description

The DS26C31 device is a quad differential line driver designed for digital data transmission over balanced lines. The DS26C31T meets all the requirements of EIA standard RS-422 while retaining the low power characteristics of CMOS. The DS26C31M is compatible with EIA standard RS-422; however, one exception in test methodology is taken(2). This enables the construction of serial and terminal interfaces while maintaining minimal power consumption.

The DS26C31 accepts TTL or CMOS input levels and translates these to RS-422 output levels. This part uses special output circuitry that enables the drivers to power down without loading down the bus. This device has enable and disable circuitry common to all four drivers. The DS26C31 is pin compatible to the AM26LS31 and the DS26LS31.

All inputs are protected against damage due to electrostatic discharge by diodes to VCC and ground.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DS26C31M SNLS3759577 9.90 mm × 3.91 mm
PDIP (16) 19.304 mm × 6.35 mm
DS26C31T SNLS3759577 9.90 mm × 3.91 mm
PDIP (16) 19.304 mm × 6.35 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.
  2. The DS26C31M (−55°C to 125°C) is tested with VOUT between 6 V and 0 V while RS-422A condition is 6 V and −0.25 V.

4 Device Logic Diagram

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