LTC2874IFE#PBF

LTC2874IFE#PBF is a quad IO-Link host hot swap controller and PHY. It provides a rugged, 4-portIO-Linkpower 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 MOSFET, 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 signalling 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 host PHY. Application includes IO-Link host, intelligent sensor and actuators, and factory automation networks.

• IO-Link® compatible (COM1/COM2/COM3)
• Input supply operating range from 8 to 34V (24VMODE = 0), 20 to 34V (24VMODE = 1)
• Hot Swap™ controller protected supply outputs
• Discrete power MOSFETs for ruggedness and flexibility
• 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, no damage or latch up to ±8kV HBM ESD
• 2.9V to 5.5V logic supply for flexible digital interface
• 38 lead plastic TSSOP package, temperature range from -40°C to 85°C

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