MAX5965A MAX5965B controllers

Maxim Semiconductor introduced new controllers designed for use in network equipment .The MAX5965A/MAX5965B are quad, monolithic, -48V power controllers designed for use in IEEE® 802.3af-compliant/pre-IEEE 802.3at-compatible power-sourcing equipment (PSE). The MAX5965A/MAX5965B are pin compatible with the MAX5952/MAX5945/LTC4258/LTC4259A PSE controllers and provide additional features.
The MAX5965A/MAX5965B feature a high-power mode that provides up to 45W per port. The MAX5965A/MAX5965B provide input undervoltage lockout (UVLO), input undervoltage detection, a loadstability safety check during detection, input overvoltage lockout, overtemperature detection, output voltage slew-rate limit during startup, power-good status, and fault status.
Other features of the MAX5965A/MAX5965B chips are : IEEE 802.3af Compliant/Pre-IEEE 802.3at Compatible , Instantaneous Readout of Port Current Through I2C Interface , High-Power Mode Enables Up to 45W Per Port , High-Capacitance Detection for Legacy Devices , Pin Compatible with MAX5952/MAX5945/LTC4258/LTC4259A , Four Independent Power-Switch Controllers , PD Detection and Classification , Load-Stability Safety Check During Detection , I2C-Compatible , 3-Wire Serial Interface , Current Foldback and Duty-Cycle-Controlled Current Limit , Direct Fast Shutdown Control Capability , Special Class 5 Classification