MAX31911
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MAX31911

Industrial, Octal, Digital Input Translator/Serializer

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Industry's Most Robust Low-Power Industrial Digital Input Serializer

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.25
Features
  • Very Low Power and Heat Dissipation
    • Low Quiescent Current (1.4mA typ)
    • Highly Accurate and Stable Input Current Limiters, Adjustable from 0.5mA to 6mA
  • High Integration Reduces BOM Count, Board Size, and System Cost
    • Eight High-Voltage Input Channels (36V max)
    • On-Chip 8-1 Serialization with SPI Interface
    • On-Chip 5V Regulator
    • On-Chip Overtemperature Indicator
    • On-Chip Field Supply Voltage Monitor
    • Integrated Debounce Filters, Selectable from 0 to 3ms
  • Robust Features and Performance for Industrial Environments
    • Multibit CRC Code Generation and Transmission for Error Detection and More Reliable Data Transmission
    • High ESD Immunity on All Field Input Pins
  • Accepts Industry Standard Input Types
    • Configurable for IEC 61131-2 Input Types 1, 2, and 3
  • Flexible Power Supply Capability Enables Usage in 5V, 12V, 24V, and Higher Voltage Systems
    • Wide Operating Field Supply Range of 7V to 36V
    • Can Be Powered From the Logic-Side Using a 5V Supply
Additional Details
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The MAX31911 industrial interface serializer translates, conditions, and serializes the 24V digital output of sensors and switches used in industrial, process, and building automation to 5V CMOS-compatible signals required by microcontrollers. It provides the front-end interface circuit of a programmable logic controller (PLC) digital input module.

The device features integrated current limiting, lowpass filtering, and channel serialization. Input current limiting allows a significant reduction in power consumed from the field voltage supply as compared to traditional discrete resistor-divider implementations. Selectable on-chip lowpass filters allow flexible debouncing and filtering of sensor outputs based on the application.

On-chip serialization allows a drastic reduction in the number of optocouplers used for isolation. The device serializer is stackable so that any number of input channels can be serialized and output through only one SPI-compatible port. This reduces the number of optocouplers needed to only three, regardless of the number of input channels.

For enhanced robustness with respect to high-frequency noise and fast electrical transients, a multibit CRC code is generated and transmitted through the SPI port for each 8 bits of data. The on-chip 5V voltage regulator can be used to power external optocouplers, digital isolators, or other external 5V circuitry.

For ultra-low-power applications, Maxim Integrated offers a pin-compatible version of this device, the MAX31910. The MAX31910 uses patent-pending circuit techniques to achieve further reduction of power beyond what is possible by input current limiting alone.

The MAX31912 and MAX31913 versions include energy-less LED drivers while maintaining pin compatibility.

Applications

  • Digital Input Modules for PLCs
  • Industrial, Building, and Process Automation
  • Motor Control
Part Models 2
1ku List Price Starting From $2.25

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX31911AUI+
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MAX31911AUI+T
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Part Models

Product Lifecycle

PCN

Mar 8, 2018

- 1759

DESIGN

MAX31911AUI+

PRODUCTION

MAX31911AUI+T

PRODUCTION

Jan 17, 2018

- 1722E

ASSEMBLY

MAX31911AUI+

PRODUCTION

MAX31911AUI+T

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Mar 8, 2018

- 1759

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DESIGN

MAX31911AUI+

PRODUCTION

MAX31911AUI+T

PRODUCTION

Jan 17, 2018

- 1722E

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ASSEMBLY

MAX31911AUI+

PRODUCTION

MAX31911AUI+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX31911EVKIT

Evaluation Kit for the MAX31910 and MAX31911

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MAX31911EVKIT

Evaluation Kit for the MAX31910 and MAX31911

Evaluation Kit for the MAX31910 and MAX31911

Features and Benefits

  • Easy Evaluation of the MAX31910 and MAX31911
  • Fully Assembled and Tested
  • USB HID Interface
  • Digital Isolator
  • Windows XP® OS- and Windows® 7 OS-Compatible Software
  • RoHS Compliant

Product Detail

The MAX31910/11 evaluation kit (EV kit) provides the hardware and software (graphical user interface) necessary to evaluate the MAX31910 and MAX31911 industrial octal digital input translators/serializers. The EV kit includes a MAX31910AUI+ or MAX31911AUI+ installed as well as a digital isolator and USB-to-SPI interface.
The USB to SPI Dongle is a separate PCB that can be used to interact with the EV kit software. This dongle is optional and is not necessary for the proper operation of the MAX31910/11 if the user supplies the SPI interface.
This EV kit is intended for functional and parametric evaluation of the IC only; it is not intended for EMC testing.

Applications

  • Building Automation
  • Digital Input Modules for PLCs
  • Industrial Automation
  • Motor Control
  • Process Automation

MAX31910EVKIT

Evaluation Kit for the MAX31910 and MAX31911

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MAX31910EVKIT

Evaluation Kit for the MAX31910 and MAX31911

Evaluation Kit for the MAX31910 and MAX31911

Features and Benefits

  • Easy Evaluation of the MAX31910 and MAX31911
  • Fully Assembled and Tested
  • USB HID Interface
  • Digital Isolator
  • Windows XP® OS- and Windows® 7 OS-Compatible Software
  • RoHS Compliant

Product Detail

The MAX31910/11 evaluation kit (EV kit) provides the hardware and software (graphical user interface) necessary to evaluate the MAX31910 and MAX31911 industrial octal digital input translators/serializers. The EV kit includes a MAX31910AUI+ or MAX31911AUI+ installed as well as a digital isolator and USB-to-SPI interface.
The USB to SPI Dongle is a separate PCB that can be used to interact with the EV kit software. This dongle is optional and is not necessary for the proper operation of the MAX31910/11 if the user supplies the SPI interface.
This EV kit is intended for functional and parametric evaluation of the IC only; it is not intended for EMC testing.

Applications

  • Building Automation
  • Digital Input Modules for PLCs
  • Industrial Automation
  • Motor Control
  • Process Automation
Reference Designs

Reference Designs 1

maxrefdes12fig01

Isolated Industrial Octal Digital Input Translator/Serializer

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MAXREFDES12

Isolated Industrial Octal Digital Input Translator/Serializer

Isolated Industrial Octal Digital Input Translator/Serializer

Features and Benefits

Features

  • Eight high-voltage input channels (36V, max)
  • On-chip 8-to-1 serialization with SPI interface
  • On-chip 5V regulator
  • Isolated power and data
  • Small printed circuit board (PCB) area
  • Device drivers
  • Example C source code
  • Pmod™-compatible form factor

Applications

  • Building automation
  • Digital input modules for PLCs
  • Industrial automation
  • Motor control
  • Process automation

View Detailed Reference Design external link

Design & Integration Tools

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ZIP

47.02 M

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