june 2008 ? 2008 fairchild semiconductor corporation www.fairchildsemi.com FSA1208 rev. 0.1.2 FSA1208 ? low-power, eight-port, high-speed isolation switch advance information ?confidential & proprietary ? do not distribute FSA1208 low-power, eight-port, high-speed isolation switch features ? low on capacitance: 6pf typical ? low on resistance: 15 ? typical ? low power consumption: 1 a maximum ? 10 a maximum i cct over an expanded voltage range (v in =2.3v, v cc =4.3v) ? wide -3db bandwidth: > 400mhz ? packaged in space-saving 20-lead mlp (2.5x4.5mm) ? 8kv esd rating; >16kv power/gnd esd rating ? low c off capacitance: 2.5pf typical applications ? dimm ddr memory important note: for additional performance info rmation, please contact analogswitch@fairchildsemi.com . description the FSA1208 is a low-power, eight-port, high-speed switch. this part is configured as a single-pole, single- throw switch and is optimized for isolating a high-speed source, such as a ddr memory bus. the FSA1208 features an extremely low on capacitance (c on ) of 6pf. superior channel-to-channel crosstalk minimizes interference. the FSA1208 contains specia l circuitry on the a & b pins that allows the device to withstand an over-voltage condition. this device is also designed to minimize current consumption even when the control voltage applied to the /oe pin is lower than the supply voltage (v cc ). applications include port isolation and switching in ddr memory modules, portable cell phones, pdas, digital cameras, printers, and notebook computers. ordering information part number top mark operating temperature range package eco status FSA1208bqx f1208 -40 to +85c 20-lead, quad, molded leadless package (mlp), 2.5x4.5mm green for fairchild?s definition of ?green? eco status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html . dimm dimm slot oe oe v cc FSA1208 1a 2a 3a 4a 5a 6a 7a 8a 1b 2b 3b 4b 5b 6b 7b 8b dimm figure 1. analog symbol
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FSA1208 rev. 0.1.2 9 FSA1208 ? low-power, eight-port, high-speed isolation switch advance information ?confidential & proprietary ? do not distribute
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