KSZ8721BL/SL 3.3V Single Power Supply 10/100 Base-TX/FX MII Physical Layer Transceiver Features Single Chip 100BASE-TX/100BASE-FX/ On-Chip, Built-In, Analog Front-End Filtering for 10BASE-T Physical Layer Solution Both 100BASE-TX and 10BASE-T 2.5V CMOS Design 2.5/3.3V Tolerance on I/O LED Outputs for Link, Activity, Full-Duplex/Half- Duplex, Collision, and Speed 3.3V Single Power Supply with Built-In Voltage Regulator Power Consumption <340 mW Supports Back-to-Back, FX to TX for Media (Including Output Driver Current) Converter Applications Fully Compliant to IEEE 802.3u Standard Supports MDI/MDI-X Auto-Crossover Supports MII and Reduced MII (RMII) KSZ8721BL is a Drop-In Replacement for the KSZ8721BT in the Same Footprint Supports 10BASE-T, 100BASE-TX, and 100BASE-FX with Far-End Fault Detection KSZ8721SL is a Drop-In Replacement for the KSZ8721B in the Same Footprint Supports Power Down and Power Saving Modes Commercial Temperature Range: 0C to +70C Congurable Through MII Serial Management Ports or via External Control Pin Industrial Temperature Range: 40C to +85C Supports Auto-Negotiation and Manual Selection Available in 48-pin SSOP and LQFP Packages for 10/100 Mbps Speed and Full-Duplex/Half- Duplex Modes 2018 Microchip Technology Inc. DS00002813A-page 1KSZ8721BL/SL TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: