General Description
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 x 7mm)
TQFN package and is specified over the extended -40°C
to +125°C temperature range.

Applications
● IO-Link Master Systems
● IO-Link Gateways

Benefits and 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
• Selectable Driver Current: 100mA to 500mA
● Integrated Protection Enables Robust Systems
• Reverse Polarity Protection 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
• Dual 24V Sensor Supply Controllers Include:
Large Capacitive Load Charge Capability
2A and Higher Load Currents
• Glitch Filters for Improved Burst Resilience
• -40°C to +125°C Operating Temperature Range