High Speed Digital Output PLC Module Reference Design


Design files


This high-speed digital output reference design for programmable logic controllers (PLCs) illustrates low-cost, simple high-speed single-ended digital output module using standard low-side driver and backplane powered using isolated power stage. High-speed digital output modules are required for motor control and positioning applications.

  • Four high-speed digital outputs
  • External load power
  • Single-ended outputs working up to 500-kHz with 5-V field power and 100-kHz with 24-V filed power
  • 210-mW power consumption from backplane isolated power stage
  • Less than 100-ns transition time with 15-m cable
  • 300-mW power consumption per load for 5-V supply, and 44-Ω load
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUC29A.PDF (1381 K)

Reference design overview and verified performance test data

TIDRN29.PDF (554 K)

Detailed schematic diagram for design layout and components

TIDRN30.PDF (64 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRN31.PDF (314 K)

Detailed overview of design layout for component placement

TIDRN34.ZIP (1357 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRN32.PDF (1419 K)

PCB layer plot file used for generating PCB design layout

TIDRN33.PDF (2755 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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LM276550-kHz switched capacitor voltage doubler

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Digital isolators

ISO7140CCQuad-channel, 4/0, 50-Mbps digital isolator

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Transformer drivers

SN6501Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide High Speed Digital Output PLC Module Design Guide (Rev. A) Sep. 28, 2016

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