LTC2874 Quad IO-Link Master Hot Swap Controller and PHY
Product Details
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.
Applications
- IO-Link Masters
- Intelligent Sensors and Actuators
- Factory Automation Networks
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