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FSTU162211 Folha de dados(PDF) 1 Page - Fairchild Semiconductor |
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FSTU162211 Folha de dados(HTML) 1 Page - Fairchild Semiconductor |
1 / 6 page Preliminary © 2001 Fairchild Semiconductor Corporation DS500064 www.fairchildsemi.com June 2001 Revised June 2001 FSTU162211 24-Bit Bus Switch with −2V Undershoot Protection and 25 Ω Series Resistors in Outputs (Preliminary) General Description The Fairchild Switch FSTU162211 provides 24-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 a 12-bit or 24-bit bus switch. When OE1 is LOW, the switch is ON and Port 1A is con- nected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. The A and B Ports are protected against under- shoot to support an extended range to 2.0V below ground. Fairchild’s integrated Undershoot Hardened Circuit (UHC ) senses undershoot at the I/O and responds by preventing voltage differentials from developing and turn- ing the switch on. The FSTU162211 has equivalent 25 Ω series resistors to reduce signal-reflection noise, eliminating the need for external terminating resistors. Features s Undershoot hardened to −2V (A and B Ports) s Slower output enable times to prevent signal disruption s 25 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: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. UHC is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description FSTU162211MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide |
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