The new SCAN50C400 extends legacy FR-4 backplanes to serial data rates of 4Gbps.National Semiconductor has further extended the life of legacy backplanes with the SCAN50C400, a quad SERDES (serializer/deserializer) transceiver. The four-channel transceiver maintains signal integrity at 5Gbps over FR-4 backplanes designed for 1.25 and 2.5Gbps and enables the reuse of ASICs for an additional product generation. The CML current-mode-logic serial I/O runs at 1.25, 2.5, or 5Gbps rates for backward compatibility with legacy line cards running at lower speeds.
Employing fixed and adaptive equalizers to improve recovered signal integrity, the SCAN50C400 achieves UI (unit-interval) transmitter jitter and 0.65-UI receiver-jitter tolerance; has a IEEE P802.3ae D4.0 standard-compliant MDIO (management data input/output) bus to control programmable features, such as de-emphasis; and offers built-in self test, loopback modes, and a JTAG port to support at-speed testing.
Samples and evaluation boards are available, with prices at less than $100 (large volumes).
National SemiconductorFax 852-2314-9424
http://lvds.national.com
