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

Ultra-Low-Power Robust Dual IO-Link Master Transceiver with Integrated Framers

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The MAX14819 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 1.1.2. This master transceiver also includes two auxiliary digital input (DI_) channels.

The MAX14819 is configurable to operate either with external UARTs or using the integrated framers 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 also features autonomous cycle timers, reducing the need for accurate controller timing. Integrated establish-communication sequencers also simplify wake-up management.

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

MAX14819: Functional Diagram MAX14819: Functional Diagram Enlarge+

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 1.1.2
    • 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


  • IO-Link Gateways
  • IO-Link Master Systems
Part NumberFunctionsVCC
DI Input Threshold
DI Input Threshold
Logic-Level Supply Voltage
Integrated PowerProtection FeaturesPackage/PinsOper. Temp.
minmaxtyphighlowSee Notes
MAX14819 Dual Master Transceiver + 2 DI96550010.5 to 138 to 11.51,62 to 5.55V LDO
Current Limiter
High Temp Warning and Shutdown
Reverse Current Blocking
Reverse Polarity
Selectable Overcurrent
Short Circuit
-40 to +125$6.03 @1k
See All IO-Link Transceivers and Binary Drivers (11)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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