Features and Benefits
- IO-Link® Compatible (COM1/COM2/COM3)
- 8V to 34V Operation
- Hot Swap™ Controller Protected Supply Outputs
- Discrete Power MOSFETs for Ruggedness and Flexibility
- Configurable 100mA (4-Port), 200mA (2-Port), or 400mA (1-Port) CQ Drive Capability
- Automatic Wake-Up Pulse Generation
- Automatic Cable Sensing
- CQ Pins Protected to ±50V
- Configurable L+ Current Limit with Foldback
- Short Circuit, Input UV/OV and Thermal Protection
- Optional Interrupt and Auto-Retry after Faults
- 2.9V to 5.5V Logic Supply for Flexible Digital Interface
- No Damage or Latchup to ±8kV HBM ESD
- 38-Lead (5mm × 7mm) QFN and TSSOP Packages
The LTC2874 provides a rugged, 4-port IO-Link power and communications interface to remote devices connected by cables up to 20m in length.
Output supply voltage and inrush current are ramped up in a controlled manner using external N-channel MOSFETs, providing improved robustness compared to fully integrated solutions.
Wake-up pulse generation, line noise suppression, connection sensing and automatic restart after fault conditions are supported, along with signaling at 4.8kb/s, 38.4kb/s, and 230.4kb/s.
Configuration and fault reporting are exchanged using a SPI-compatible 4-wire interface that operates at clock rates up to 20MHz.
The LTC2874 implements an IO-Link master PHY. For IO-Link device designs, see the LT3669.
- IO-Link Masters
- Intelligent Sensors and Actuators
- Factory Automation Networks
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Demonstration circuit 1880A showcases the LTC2874, a quad Hot Swap™ controller and PHY suitable for IO-Link® master and other applications. DC1880A operates from an external supply VDD and utilizes the DC590 USB serial controller board to communicate with the LTC2874 using SPI protocol.
IO-Link®, the new bi-directional, digital, point-to-point communication standard (IEC 61131-9) offers a standardized mapping of advanced sensor and actuator features into the automation tool environment. This technology leverages small but powerful microprocessors being incorporated into sensors and actuators to improve control, parameterization and diagnostics.
TEConcept has developed an 8-Port IO-Link master reference design that demonstrates a robust physical interface built using two LTC2874 IC's. The DC2228A will operate your favorite IO-Link device, controlled by Control Tool software (including IODD Interpreter) via an Ethernet connection.
DC2228A operates either with an external 24V supply or, optionally, a Power over Ethernet (PoE) system. For the PoE case, it can be completely powered via an Ethernet connection to power sourcing equipment such as a PoE injector or PoE switch. We recommend a 90W LTPoE++ solution such as the Allnet ALL048900, which comes with its own power adapter.
Tools & Simulations
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
LTC2874 Companion Parts
Recommended Related Parts
Solutions Bulletins & Brochures (1)
LT Journal (1)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.