MAX22195

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High-Speed, Octal, Industrial Digital Input with Parallel Output

Industry's Smallest, Robust, Octal Digital Input with Parallel Output

Data Sheet (Rev. 6) Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.89

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Overview

High-Speed, Industrial Digital Inputs
- 300ns Maximum Propagation Delay
- ±10ns Maximum Channel-to-Channel Skew
- Parallel Output for Simultaneous Signal Delivery
High Integration Reduces BOM Count and Board Space
- Operates Directly from Field Supply (7V to 65V)
- Compatible with 3.3V or 5V Logic
- 5mm x 5mm, 32-TQFN Package
Low Power and Low Heat Dissipation
- Low Quiescent Current (1.2mA Maximum)
- Accurate Input Current-Limiters
- Energyless Field-Side LED Drivers
Fault Tolerant with Built-In Diagnostics
- Integrated Field-Side Supply Monitor
- Integrated Overtemperature Monitor
- Current-Setting Resistor Monitor
Configurability Enables Wide Range of Applications
- Configurable IEC 61131-2 Types 1, 2, 3 Inputs
- Configurable Input Current Limiting from 0.56mA to 3.97mA
Robust Design
- ±1kV Surge Tolerant using Minimum 1kΩ Resistor
- ±8kV Contact ESD and ±15kV Air Gap ESD Using Minimum 1kΩ Resistor
- -40°C to +125°C Ambient Operating Temperature

The MAX22195 translates eight 24V industrial digital inputs to eight CMOS-compatible, parallel outputs. Propagation delay from input-to-output is less than 300ns for all channels. Current-limiters on each digital input greatly reduce power dissipation compared to traditional resistive inputs. The accuracy of these current-limiters minimizes power dissipation while ensuring compliance with the IEC 61131-2 standard. A current-setting resistor allows the MAX22195 to be configured for Type 1, Type 2, or Type 3 inputs. Additionally, the MAX22195 has energyless field-side LED drivers to meet the indicator light requirement of IEC 61131-2 with no additional power dissipation.

The MAX22195 provides a 3.3V integrated voltage regulator. The internal LDO accepts the field supply V_DD24 from 7V to 65V. The internal LDO output can supply up to 25mA of current in addition to powering the basic MAX22195 requirements. This MAX22195 LDO current can be used to power digital isolators and other field-side circuits. Alternatively, the MAX22195 can be powered from a 3.0V to 5.5V supply connected to V_DD3 pin.

The MAX22195 includes an open-drain READY output that asserts high to indicate the MAX22195 is functional. If the V_DD24 field-side supply voltage is too low, or a fault in the current-setting resistor is detected, or the device reaches an over-temperature condition, the READY signal is set to high-impedance.

Applications

Building Automation
Industrial Automation
Process Automation
Programmable Logic Controllers

Part Models: 2
1ku List Price: Starting From $2.89

Documentation

Data Sheet 1

MAX22195: High-Speed, Octal, Industrial Digital Input with Parallel Output Data Sheet (Rev.6) 04/01/2021

Technical Articles 1

How to Design Digital Input Modules with Parallel Interface Using Industrial Serialized Digital Inputs 07/15/2025

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX22195ATJ+	LFCSP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX22195ATJ+T	LFCSP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

IBIS Model 1

MAX22195 IBIS Model

Evaluation Kits

Evaluation Kit for the MAX22195

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Features and Benefits

Easy Evaluation of the MAX22195
Parallel Output for Simultaneous Signal Delivery
Configurable External VDD24 Voltage Monitoring
Configured for IEC 61131-2 Type 1, 3
Robust Design ±2kV Surge Tolerant Line-to-Line
Withstand ±8kV Contact ESD, ±15kV Air Gap ESD
Fully Assembled and Tested
Proven PCB Layout
RoHS Compliant

Product Details

The MAX22195 evaluation kit (EV kit) provides the hardware necessary to evaluate the MAX22195 high-speed, octal, industrial digital input with parallel output device. The MAX22195 EV kit provides terminal blocks for all 8 inputs and a header for all 8 outputs for easy monitoring and evaluation. Eight field-side LEDs are provided to indicate the input status, and a READY LED to indicate the MAX22195 is operating normally.