IO-Link Master Transceiver

The MAX14824 is an IO-Link® master interface that integrates an IO-Link physical layer transceiver with an auxiliary digital input and two linear regulators. High port count IO-Link master applications are supported through in-band SPI addressing, and the 12MHz SPI interface minimizes host controller access times. In-band addressing and selectable SPI addresses enable cascading up to 16 devices.

The device supports all the IO-Link data rates and features slew-rate-controlled drivers to reduce EMI. The driver is guaranteed to drive up to 300mA (min) load currents. Internal wake-up circuitry automatically determines the correct wake-up polarity, allowing for the use of simple UARTs for wake-up pulse generation.

The MAX14824 is available in a 4mm x 4mm, 24-pin TQFN package with exposed pad, and operates over the extended -40°C to +105°C temperature range. Applications

* 24V Digital Inputs and Outputs * High Port Count IO-Link Masters * IO-Link Master Controllers * PLC Fieldbus Gateways

* IO-Link v.1.0 and v.1.1 Physical Layer Compliant

* Supports COM1, COM2, and COM3 Data Rates

* Push-Pull, High-Side, or Low-Side Outputs

* 300mA C/Q Output Drive

* 1µF C/Q Load Drive Capability

* Generates 500mA Wake-Up Pulse

* Automatic Wake-Up Pulse Polarity

* Auxiliary Digital Input

* 5V and 3.3V Linear Regulators

* SPI Interface for Configuration and Monitoring

* SPI-Based Chip Addressing

* EMI Emission Control Through Slew-Controlled Driver

* Reverse-Polarity Protection on DI

* Short-Circuit Protection on C/Q

* High Temperature Warning and Thermal Shutdown

* Extensive Fault Monitoring and Reporting

* -40°C to +105°C Operating Temperature Range

* 4mm x 4mm TQFN Package