Ethernet PoE power detection has been removed from STE10GBE1 in order to provide 8 transparent lines for 10 Gigabit Ethernet, or for other data formats that might conflict with 802.3 af/at mode detection. STE10GBE1 still passes PoE power, and it’s a great solution for custom I/O applications up to 450 MHz per line (2,500Mbps). It is physically interchangeable with STE10GBE, STEGBE4590 or STEGBE4591.
Comparing STE10GBE and STE10GBE1: STE10GBE provides PoE mode detection to tell you if PoE is using mode A, Mode B, or both Mode A and Mode B. STE10GBE1 does not provide the mode detection but provides all other PoE and 10 Gigabit Ethernet functions as well as being a versatile 8 line data interface for other data protocols. STE10GBE’s PoE Mode Detection circuitry may interfere with other than Ethernet data protocols. If you need to know what PoE mode is being used then you definitely want STE10GBE. If you don’t need to know what PoE mode is being used then STE10GBE1 may be a better solution because it allows other protocols to pass through the interface. This makes STE10GBE1 a more versatile interface. Please review the datasheet you’ll find in the downloads tab of each product page for more information.