The 1417K5A transceiver is a high-speed, cost-effective optical transceiver intended for 2.488 Gbits/s shelf-to-shelf optical interconnect applications as well as SONET SR OC-48 and SDH I-16. The transceiver features proven Agere Systems optics and is packaged in a narrow-width plastic housing with an LC duplex receptacle. The receptacle fits into an RJ-45 form factor outline. The 20-pin package pinout conforms to a multisource transceiver agreement. The transmitter features the ability to interface to both LVPECL and CML differential logic level data inputs. The transmitter also features a TTL logic level disable input and laser bias and back-facet monitor outputs. The receiver features differential CML logic level data and clock outputs, a TTL logic level signal-detect output and direct access to the PIN photodetector bias input for photocurrent monitoring purposes.