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FST3345QSC Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor |
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FST3345QSC Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor |
1 / 5 page © 2005 Fairchild Semiconductor Corporation DS500019 www.fairchildsemi.com June 1997 Revised March 2005 FST3345 8-Bit Bus Switch General Description The Fairchild Switch FST3345 provides 8-bits of high- speed CMOS TTL-compatible bus switching. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. 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. Features s 4 : switch connection between two ports. s Minimal propagation delay through the switch. s Low lCC. s Zero bounce in flow-through mode. s Control inputs compatible with TTL level. Ordering Code: 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 Pin Descriptions Connection Diagram Truth Table Order Number Package 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 (Note 1) MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Pin Name Description OE, OE Bus Switch Enables ABus A BBus B Inputs Function OE OE X L Connect H X Connect L H Disconnect |
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