IO-Link Device Transceiver

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.

Applications

* Industrial Sensors and Actuators * IO-Link Actuators * IO-Link Sensors

* 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