TIDA-01508

Sub 1-W, 16-Channel, Isolated Digital Input Module Reference Design

TIDA-01508

Design files

Overview

This reference design shows a compact implementation of 16 isolated digital input channels using TI's ISO121x devices. The design works without an isolated supply and supports up to 100-kHz input signals (200-kbit) per channel. All 16 channels consume less than 1-W input power combined, which enables a compact layout and results in minimum heat dissipation.

Features
  • 16 digital input channels with up to ±60-V input voltage tolerance
  • Works with primary supply only, no isolated power supply needed
  • Parallel and serial output option
  • ±6-kV IEC 61000-4-2 ESD performance
  • Designed to withstand ±2-kV surge and EFT burst tolerant
  • LaunchPad™ header for quick and easy evaluation

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.

TIDUDI8.PDF (1038 K)

Reference design overview and verified performance test data

TIDRUP2.PDF (809 K)

Detailed schematic diagram for design layout and components

TIDRUP3.PDF (94 K)

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

TIDRUP4.PDF (357 K)

Detailed overview of design layout for component placement

TIDRUP6.ZIP (1514 K)

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

TIDCEA2.ZIP (703 K)

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

TIDRUP5.PDF (1734 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

ESD & surge protection ICs

TVS330033V flat-Clamp surge protection device

Data sheet document-pdfAcrobat PDF open-in-new HTML
Inverting buffers & drivers

SN74LVC1GU04Single 1.65-V to 5.5-V inverter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated digital inputs

ISO1211Single-channel Isolated 24-V to 60-V digital input receiver for digital input modules

Data sheet document-pdfAcrobat PDF open-in-new HTML
Isolated digital inputs

ISO1212Dual-channel Isolated 24-V to 60-V digital input receiver for digital input modules

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shift registers

SN74LV165AParallel-load eight-bit shift registers

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide Sub 1-W, 16-Channel, Isolated Digital Input Module Reference Design Dec. 14, 2017

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