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FST3244WMX Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FST3244WMX Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page March 2008 © 1997 Fairchild Semiconductor Corporation www.fairchildsemi.com FST3244 • Rev. 1.0.3 FST3244 — 8-Bit Bus Switch Features 4 Ω Switch Connection between Two Ports Minimal Propagation Delay through the Switch Low ICC Zero Bounce in Flow-through Mode Control Inputs Compatible with TTL Level Description The FST3244 switch provides eight-bits of high-speed, CMOS, TTL-compatible bus switching in a standard ’244 pin-out. The low on resistance allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device is organized as two four-bit switches with separate /OE inputs. 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 a high-impedance state exists between the two ports. Ordering Information Part Number Operating Temperature Range Package Packing Method FST3244WMX -40 to +85°C 20-Lead, Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300-inch Wide Tape and Reel FST3244QSCX -40 to +85°C 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150-inch Wide Tape and Reel FST3244MTCX -40 to +85°C 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Tape and Reel All packages are lead free per JEDEC: J-STD-020B standard. The Fairchild switch family derives from and embodies Fairchild’s proven switch technology used for several years in its 74LVX3L384 (FST3384) bus switch product. Logic Diagram 18 12 1B0 1B3 1 2 8 11 17 9 3 2B3 2B0 19 /OE1 1A3 1A0 2A3 2A0 /OE2 Figure 1. Logic Diagram |
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