Datenblatt-Suchmaschine für elektronische Bauteile |
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FSTU3257QSC Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
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FSTU3257QSC Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
1 / 7 page © 2000 Fairchild Semiconductor Corporation DS500302 www.fairchildsemi.com August 1999 Revised April 2000 FSTU3257 Quad 2:1 Multiplexer/Demultiplexer Bus Switch with −2V Undershoot Protection General Description The Fairchild Switch FSTU3257 is a quad 2:1 high-speed CMOS TTL-compatible multiplexer/demultiplexer bus switch. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. When OE is LOW, the select pin connects the A Port to the selected B Port output. The A and B Ports are “undershoot hardened” with UHC protection to support an extended range of 2.0V below ground. Fairchild’s integrated Under- shoot Hardened Circuit UHC senses undershoot at the I/O and responds by preventing voltage differentials from developing and turning on the switch. When OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports. Features s Undershoot hardened to −2V (A and B Ports) s Soft enable turn-on to minimize bus to bus charge sharing during enable s 4 Ω 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. s See Applications Note AN-5008 for details Ordering Code: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. UHC is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description FSTU3257M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow FSTU3257QSC MQA16 16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide FSTU3257MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide |
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