Dual IO-Link Master Transceiver with Integrated Framers and L+ Supply Controllers

Description

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The MAX14819/MAX14819A low-power, dual-channel, IO-Link^® master transceiver with sensor/actuator power- supply controllers is fully compliant with the latest IO-Link and binary input standards and test specifications, IEC 61131-2, IEC 61131-9 SDCI, and IO-Link 1.1.3. This master transceiver also includes two auxiliary digital input (DI_) channels.

The MAX14819/MAX14819A is configurable to operate either with external UARTs or using the integrated fram- ers on the IC.

To ease selection of microcontroller, the master transceiver features frame handlers with UARTs and FIFOs. These are designed to simplify time critical control of all IO-Link M-sequence frame types. The MAX14819/MAX14819A also features autonomous cycle timers, reducing the need for accurate controller timing. Integrated establish-communication sequencers also simplify wake-up management.

The device message response delay on the MAX14819A can be disabled when using the frame handler and the MAX14819A features higher L+ thresholds than the MAX14819. The MAX14819A receivers also feature increased high-frequency signal isolation compared to the MAX14819.

The MAX14819/MAX14819A integrates two low-power sensor supply controllers with advanced current limiting, reverse current-blocking, and reverse polarity protection capability to enable low-power robust solutions.

The MAX14819/MAX14819A is available in a 48-pin (7mm x 7mm) TQFN package and is specified over the extended -40°C to +125°C temperature range.

Key Features

• Low-Power Architecture
  • 1Ω (typ) Driver On-Resistance
  • 1.9mA (typ) Total Supply Current for 2 Channels
  • Current Limiters with 15mV Sense Voltage
• Integrated IO-Link Framer Eliminates Need for External UARTs
  • Integrated Cycle Timer Relieves Microcontroller from Timing-Critical Tasks
• High Configurability and Integration Reduce SKUs
  • Two Auxiliary Type 1/Type 3 Digital Inputs
  • Supports NPN Sensors
  • Dual 24V Sensor Supply Controllers Include:
  • Large Capacitive Load Charge Capability
  • 2A and Higher Load Currents
• Integrated Protection Enables Robust Systems
  • Reverse Polarity Protection on All Interface Pins
  • Overvoltage Tolerance on All Interface Pins
  • C/Q and DI Fully Compliant with IEC 61131-2
  • C/Q Compliant with IO-Link 1.1.3
  • Reverse Current Blocking on L+ and C/Q
  • 65V Absolute Max Ratings for TVS Flexibility
  • Glitch Filters for Improved Burst Resilience
  • -40°C to +125°C Operating Temperature Range

Applications/Uses

• IO-Link Gateways
• IO-Link Master Systems