LXT6234

LXT6234 E-Rate Multiplexer Datasheet The LXT6234 E-Rate Multiplexer is a single-chip solution for multiplexing four tributary channels into a single high speed data stream and for demultiplexing a high speed data stream back to four tributary channels. All of the necessary circuitry is integrated into the LXT6234 ERate Multiplexer; there is no need for an external framing device. The LXT6234 E-Rate Multiplexer conforms to both the (ITU) G.742 and (ITU) G.751 multiplexing formats defined by the International Telecommunications Union (ITU; formerly known as CCITT): G.742 recommendation for multiplexing four E1 channels into an E2 frame; and the G.751 recommendation for multiplexing four E2 channels into an E3 frame. The LXT6234 E-Rate Multiplexer also encodes and decodes HDB3 zero suppression line coding used on E1, E2, and E3 signals. The coder and decoder input/output pins are externally accessible, allowing either HDB3 or NRZ (non-return-to-zero) I/O to the multiplexer. The LXT6234 E-Rate Multiplexer can also serve as a five channel HDB3 coder and decoder. Applications n E1/E2 Multiplexer (2/8 Mbit/s) n E2/E3 Multiplexer (8/34 Mbit/s) n E1/E3 Multiplexer (2/34 Mbit/s) n Digital Loop Carrier (DLC) Terminal n Add / Drop Multiplexers (ADM) n 4 - to - 1 Non-Standard Multiplexer Product Features n Performs four-E1 to one-E2, or four-E2 to one-E3 multiplexing. Five ICs will implement a sixteen-E1 to one-E3 multiplexer. n Fully compliant with the G.742 and G.751 ITU recommendati...