LTC2874IUHF#PBF

LTC2874IUHF#PBF is a quad IO-link 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 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 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. Applications include IO-link, intelligent sensors and actuators, factory automation networks.

• IO-Link® compatible (COM1/COM2/COM3), 8V to 34V operation
• Hot Swap™ controller protected supply outputs, automatic wake-up pulse generation
• Discrete power MOSFETs for ruggedness and flexibility, automatic cable sensing
• CQ pins protected to ±50V, configurable L+ current limit with foldback
• Short circuit, input UV/OV and thermal protection, no damage or latch up to ±8kV HBM ESD
• 2.9V to 5.5V logic supply for flexible digital interface
• VDD input supply current, all ports enabled is 5mA typ at (DRVEN = 0xF, ENL+ = 0xF, ILLM = 0x0)
• UV lockout hysteresis is 0.13V typ at (TA = 25°C)
• Receiver propagation delay is 200ns typ at (NSF = 0x0, CL = 100pF)
• Operating temperature range from -40°C to 85°C, 38-lead plastic QFN package

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