Features and Benefits

  • 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

Product Details

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.


  • Industrial Sensors and Actuators
  • IO-Link Actuators
  • IO-Link Sensors

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.