FST3345MTCX ,8-Bit Bus SwitchElectrical CharacteristicsV T
FST3345MTC-FST3345MTCX-FST3345QSCX
8-Bit Bus Switch
FST3345 8-Bit Bus Switch June 1997 Revised March 2005 FST3345 8-Bit Bus Switch General Description Features The Fairchild Switch FST3345 provides 8-bits of high-4: switch connection between two ports. speed CMOS TTL-compatible bus switching. The low onMinimal 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. Control inputs compatible with TTL level. The device is organized as an 8-bit switch bank with dual output enable inputs (OE and OE). When OE is LOW or OE is HIGH, the switch is ON and Port A is connected to Port B. When OE is HIGH and OE is LOW, the switch is OPEN and a high-impedance state exists between the two ports. Ordering Code: Package Order Number Package Description Number FST3345WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide FST3345QSC MQA20 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide FST3345MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide FST3345MTCX_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm (Note 1) Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only. Logic Diagram Connection Diagram Pin Descriptions Truth Table Pin Name Description Inputs Function OE, OE Bus Switch Enables OE OE ABus A X L Connect BBus B H X Connect L H Disconnect © 2005 DS500019
