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TI crosspoint switches operate at more than 2Gbps

Posted: 11 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ti? crosspoint switch? sn65lvds250? sn65lvdt250?

Texas Instruments Inc. (TI) announced two new 4x4 non-blocking crosspoint switches that operate at more than 2Gbps.

The SN65LVDS250 and SN65LVDT250 switches come in a flow-through pin-out, which allows for ease in PCB layout. Low-voltage differential signaling (LVDS) outputs are used to achieve a high-speed data throughput while using low power.

Each output driver of the new devices includes a 4:1 multiplexer to allow any input to be routed to any output. Internal signal paths are fully differential to achieve high signaling speeds while maintaining low signal skews. Meanwhile, the SN65LVDT250 incorporates 110-ohm termination resistors for applications where board space is at a premium.

Suitable for clock buffering and muxing or data transmission in datacom and telecom applications such as high-speed network routing and wireless base stations, the SNLVDS250 and SNLVDT250 feature a peak to peak jitter of 60ps at 2Gbps, a 25mV of input voltage threshold hysteresis, and propagation delay times of 800ps (typical). They operate from a single 3.3V supply and have 110mA power (typical). Inputs are electrically compatible with LVPECL, CML and LVDS signal levels.

With a suggested resale pricing of $7.75 in 1,000-piece quantities, the switches are available in a 38-pin TSSOP package.





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