The NB4N1158 is a high performance 3.3 V Serial Link Replicator which provides the function of serial loop replication and serial loopback control commonly required in Fibre Channel, GbE, HDTV and SATA applications. Other popular applications include Host Bus Adaptors for routing between internal and external connectors, and hot-pluggable links between redundant switch fabric cards. IN is sent to both OUT0 and OUT1; each output is enabled by OE0 and OE1 when HIGH. OUT0 can select either IN or IN1 via the MUX0 pin. Likewise, OUT1 can select between IN or IN0 via the MUX1 pin. Out can select between IN0 and IN1. In Link Replicator applications, such as the Line Card to Switch Card links, IN is transmitted to both OUT0 and OUT1 which either IN0 or IN1 is selected at OUT. In Host Adapter applications, IN goes to OUT0 (an internal connector) which returns data on IN0. IN0 is looped to OUT1 (an external connector) which returns data on IN1 and then back to the SerDes on OUT. The NB4N1158 is packaged in a 4.7 mm x 9.7 mm TSSOP-28. Features