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This literature is subject to all applicable copyright laws and is not for resale in any manner.FST6800 10-Bit Bus Switch with Precharged Outputs June 1997 Revised November 2000 FST6800 10-Bit Bus Switch with Precharged Outputs General Description Features The Fairchild Switch FST6800 provides 10-bits of high- 4 switch connection between two ports. speed CMOS TTL-compatible bus switching. The low on Minimal propagation delay through the switch. resistance of the switch allows inputs to be connected to Low l . CC outputs without adding propagation delay or generating Zero bounce in flow-through mode. additional ground bounce noise. The device precharges the B Port to a selectable bias voltage (BiasV) to minimize Output precharge to minimize live insertion noise. live insertion noise. Control inputs compatible with TTL level. The device is organized as a 10-bit switch with a bus enable (OE) signal. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and the B Port is precharged to BiasV through an equivalent 10-k resistor. Ordering Code: Order Number Package Number Package Description FST6800WM M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide FST6800QSC MQA24 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide FST6800MTC MTC24 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter X to the ordering code. Logic Diagram Connection Diagram Truth Table Pin Descriptions Pin Name Description B B OE Function 0 9 OE Bus Switch Enable LA A Connect 0 9 ABus A HBiasV Precharge BBus B 2000 Fairchild Semiconductor Corporation DS500022 www.fairchildsemi.com