Specifications

22 Control and Automation Solutions Guide

IO-Link Master Transceiver Enables

High-Density IO-Link Masters

MAX14824

The MAX14824 is an IO-Link master transceiver designed for high-channel-

count IO-Link port-count applications. The MAX14824 integrates an IO-Link

physical interface with an additional digital input and two regulators. A

high-speed 12MHz SPI interface allows fast programming and monitoring of

the IO-Link interface. A device or slave transceiver is located in the sensor/

actuator module. Maxim also oers IO-Link device transceivers, MAX14820 and

MAX14821 (see the Sensors chapter), which marry well with the MAX14824.

The MAX14824’s in-band addressing and selectable SPI addresses enable

multiple devices to be cascaded. The device supports the standard IO-Link data

rates and features slew-rate selection 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, thus allowing the use of simple UARTs

for wake-up pulse generation. The MAX14824 is available in a 4mm x 4mm, 24-

pin TQFN and operates over the extended -40°C to +85°C temperature range.

Benefits

• Lowers cost for high-port-count

IO-Link systems

◦ SPI in-band addressing

• High-power drive allows direct use

for digital outputs, which reduces

component count

◦ 300mA output directly drives high-

power actuators

◦ Capable of driving up to 1µF

capacitive loads

• High integration reduces solution size

and load on processor

◦ Automatic wake-up generation

allows use of simple processors