Description

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The MAX14821 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 device. Extensive alarm conditions are detected and communicated through the active-low IRQ output and the SPI interface. The device features reverse-polarity, short-circuit, and thermal protection. All power lines are monitored for undervoltage conditions.

The C/Q and DO drivers are specified for sourcing/sinking up to 100mA.

The device is available in a 2.5mm x 2.5mm, 25-pin WLP and a 4mm x 4mm, 24-pin TQFN package. Both are specified over the extended -40°C to +85°C temperature range.

Key Features

• Standards Compliance Ensures Future-Proof Solutions
  • IO-Link Versions 1.0 and 1.1.2
  • IEC IEC61131.9 SDCI
• High Configurability and Integration Reduces SKUs
  • Push-Pull, PNP or NPN Driver Configuration
  • Supports COM1, COM2, and COM3 Data Rates
  • SPI Interface for Control and Monitoring
  • 2.5V to 5V Logic Interface Levels
  • Auxiliary 24V, 100mA Digital Output (DO)
  • Auxiliary 24V Digital Input (DI)
  • 100mA Specified C/Q output Drive
  • Integrated 5V and 3.3V Regulators
• Integrated Protection Enables Robust Solutions
  • Extensive Fault-Monitoring and Reporting
  • Reverse-Polarity and Short-Circuit Protection on All 24V Outputs/Inputs
  • Reverse-Polarity Protected 24V Supply Output
  • -40°C to +105°C Operating Temperature Range
• Small Package Supports Sensor Miniaturization
  • 2.5mm x 2.5mm WLP and 4mm x 4mm TQFN Package

Applications/Uses

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