IO-Link Device Transceiver

Industry's Highest C/Q Drive Capability Enables Fast Data Rates for Long Cable Runs

Please check latest availability status for a specific part variant.


The MAX14820 transceiver is suitable for IO-Link® devices and 24V binary sensors/actuators. All specified IO-Link data rates are supported. In IO-Link applications, the transceiver acts as the physical layer interface to a microcontroller running the data-link layer protocol. Additional 24V digital inputs and outputs are provided. Two internal linear regulators generate common sensor and actuator power requirements: 5V and 3.3V.

On-board C/Q and DO drivers are independently configurable for push-pull, high-side (PNP), or low-side (NPN) operation. The device detects the IO-Link C/Q wake-up condition and generates a wake-up signal on the active-low WU output. The C/Q and DI inputs have selectable current loads for use in actuators.

An SPI™ interface allows configuration and monitoring of the devices. Extensive alarm conditions are detected and communicated through the active-low IRQ output and the SPI interface. The devices feature reverse-polarity, short-circuit, and thermal protection. All power lines are monitored for undervoltage conditions.

The C/Q driver is specified for sinking/sourcing ±300mA. The DO driver is specified for sinking/sourcing ±135mA.

The MAX14820 is available in a 4mm x 4mm, 24-pin TQFN package, and is specified over the extended -40°C to +85°C temperature range.
MAX14820: Typical Operating Circuit MAX14820: Typical Operating Circuit Enlarge+

Key Features

  • IO-Link Specification V1.0 and V1.1 Physical Layer Compliant
  • Supports COM1, COM2, and COM3 Data Rates
  • IO-Link Device Wake-Up Detection
  • Push-Pull, High-Side, or Low-Side Outputs
  • 300mA Specified C/Q Output Drive
  • 1µF C/Q and DO Load-Drive Capability
  • Auxiliary 24V, 135mA Digital Output
  • Auxiliary 24V Digital Input
  • Optional 6mA/7mA Current Loads at Both 24V Inputs
  • 5V and 3.3V Linear Regulators
  • Reverse-Polarity Protected 24V Supply Output
  • EMI Emission Control Through Slew-Controlled Driver
  • SPI Interface for Configuration and Monitoring
  • 2.5V to 5V Logic Interface Levels
  • Reverse-Polarity and Short-Circuit Protection on All 24V Inputs/Outputs
  • High-Temperature Warning and Thermal Shutdown
  • Extensive Fault Monitoring and Reporting
  • -40°C to +85°C Operating Temperature Range
  • 4mm x 4mm, 24-Pin TQFN Package


  • Industrial Sensors and Actuators
  • IO-Link Actuators
  • IO-Link Sensors
Part NumberFunctionsVCC
DI Input Threshold
DI Input Threshold
Slew Rate LimitingLogic-Level Supply Voltage
Integrated PowerProtection FeaturesPackage/PinsOper. Temp.
minmaxtyptyphighlowSee Notes
MAX14820 Device Transceiver9363752006.8 to 85.2 to 6.4Yes2.3 to 5.5
3.3V LDO
High Temp Warning and Shutdown
Reverse Polarity
Short Circuit
-40 to +85$3.85 @1k
See All IO-Link Transceivers and Binary Drivers (13)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX14820EVKIT: Evaluation Kit for the MAX14820 and MAX14821

CAD Symbols and Footprints

  • MAX14820ETG+
  • MAX14820ETG+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


    Related Resources

    Single-Supply Integrated Optical Module for HR and SpO2 Measurement

    • Complete Single-Channel Optical Data Acquisition System
    • Built-In Algorithm Further Enhances Rejection of Fast Ambient Transients
    • Optimized Architecture for Reflective Heart Rate and SpO2 Monitoring

    ±0.1°C Accurate, I2C Digital Temperature Sensor

    • High Accuracy and Precision
    • Low Power Consumption
    • Small Size

    Belle Isle 2020
    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.