Two lines of RJ-format transceivers from Polycore Technologies Inc. that are targeted at LAN-equipment manufacturers promise to reduce design complexity and costs in next-generation hub, switch, and router applications. The transceivers support Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI, and ATM systems.
Melbourne, Fla.-based Polycore's RJ connector for unshielded twisted-pair (UTP) transceivers reduces both board complexity and number of board layers in LAN equipment designs by integrating all analog PMD/MDI functions, the isolation and filtering functions (typically performed by magnetic modules), and the transceiver integrated circuit. They are all housed in the body of a standard-size RJ-format modular jack connector.
The RJ-format glass-optical-fiber (GOF) version is a drop-in replacement for the RJ-UTP.
The GOF transceivers have a duplex LC connector plug interface. The small form factor permits doubling fiber-optic port density in a typical LAN hub, switch, or router. The LC is an approved connector in TIA-568, ISO 11801, in the ATM specification for 155 and 622 Mbits/s, and is the specified interface for IEEE 1394b.
The GOF transceivers integrate all the same optoelectronic functions of a duplex SC optical transceiver into the body of a shielded RJ-45 modular jack connector, while using 64% less board space.
RJ-format UTP and GOF transceivers are available in single- and quad-port (harmonica) configurations. The quad-port transceiver integrates four discrete transceiver units into a single RJ-45 harmonica body.
For Fast Ethernet, the UTP transceiver (RJG-FH01) costs $11.13, and the GOF transceiver (RJU-L01) $49.13.