The MAX14819/A by Analog Devices and Maxim Integrated is a dual-channel IO-Link master transceiver featuring integrated sensor/actuator power supply controllers. Fully compliant with IO-Link standards, it simplifies IO-Link implementation with integrated frame handlers, UARTs, and FIFOs. This device simplifies system design with integrated frame handlers, autonomous timers, and communication sequencers. Additional benefits include low power consumption, wide operating temperature range, and enhanced noise immunity. The MAX14819/A is specifically designed for use in IO-Link gateways and master systems. Ideal for industrial automation applications, the device operates across a wide temperature range and comes in a compact TQFN package. 

MAX14819/A Dual IO-Link Master Transceivers Features  

The MAX14819/A is a low-power, dual IO-Link master transceiver with integrated framers and L+ supply controllers. Let’s explore its notable features:

Low-Power Architecture

The MAX14819A offers a low-power architecture with a typical driver on-resistance of 1Ω, minimizing power loss when driving IO-Link devices. The device itself consumes a low total supply current of 1.9mA across both channels, further contributing to system efficiency. The integrated current limiters with a 15mV sense voltage further contribute to efficient power management by controlling the current delivered to IO-Link devices.

High Configurability and Integration

Designed for flexibility, the MAX14819/A offers extensive configuration options, including support for both Type 1 and Type 3 digital inputs and compatibility with NPN sensors. This transceiver simplifies system design by integrating several key features. An embedded IO-Link framer eliminates the need for external UARTs, reducing component count and board space. The device also features an integrated cycle timer that offloads timing-critical tasks from the microcontroller, allowing it to focus on other system operations. Additionally, two auxiliary digital inputs provide flexibility for connecting external sensors or signals. 

Sensor Supply Controllers

The MAX14819/A incorporates dual 24V sensor supply controllers that can handle a wide range of loads. These controllers are capable of driving large capacitive loads, making them suitable for applications with sensors that have high initial inrush currents. The controllers can also deliver 2A or higher of continuous current to power various IO-Link devices. This comprehensive integration simplifies system design, reduces component count, and accelerates time-to-market.

Robust System Protection and Reliability

To ensure robust system operation, the MAX14819/A features several integrated protection mechanisms. Reverse polarity protection on all interface pins, overvoltage tolerance, and reverse current blocking on L+ and C/Q enhance system reliability and durability.  Compliance with IEC 61131-2 and IO-Link 1.1.3 standards ensures interoperability with industry-standard equipment. The device offers high voltage tolerance with 65V absolute maximum ratings for TVS flexibility, making it suitable for harsh industrial environments. Integrated glitch filters enhance burst resilience, improving communication reliability in noisy environments. 

Suitable for demanding industrial environments, the MAX14819/A operates reliably over a temperature range of -40°C to +125°C. Its compact 48-pin TQFN package optimizes board space while enabling efficient heat dissipation. This combination of wide operating temperature and compact form factor makes the MAX14819/A a suitable choice for various industrial automation applications.

Applications

The MAX14819/A Dual IO-Link Master Transceivers are ideally suited for applications requiring efficient IO-Link communication. Its dual-channel capability and integrated features make it an excellent choice for IO-Link master systems, where it can manage multiple IO-Link devices simultaneously. Additionally, its low power consumption and compact size make it suitable for integration into IO-Link gateways, enabling seamless connectivity between different communication protocols and networks.