A low-voltage differential signaling (LVDS) 4 x 4 crosspoint switch from National Semiconductor delivers a jitter performance of 10 ps typical at data transmission rates up to 3.125 Gbps. The DS25CP104 offers a feature set to enhance signal integrity in demanding applications such as XAUI (telecom) and SMPTE 424M (pro video). The product consumes 122 mW per channel while boosting and equalizing field-programmable gate array (FPGA) or applications-specific integrated circuit (ASIC) signals over cables and FR-4 backplanes.

The device inputs have a wide common-mode voltage range that allows it to accept low-voltage positive-emitter-coupled logic (LVPECL), current-mode logic (CML) and LVDS signal levels without using coupling capacitors. The crosspoint also features 8 kV electrostatic discharge (ESD) protection and 100 Ohm termination on the LVDS input and output pins to minimize insertion losses, component count and board space. National also is introducing the DS10CP154, a lower-speed, lower-power 4 x 4 crosspoint switch targeted at applications up to 1.5 Gbps, that includes many of the same features as the DS25CP104.

The DS25CP104 (3.125 Gbps) and lower power DS10CP154 (1.5 Gbps) are available now in 40-pin LLP packages and are priced at $8.75 and $4.75, respectively, each in 1,000-unit quantities.