FSTU16861MTD ,20-Bit Bus Switch with -2V UndershootFeaturesThe Fairchild Switch FSTU16861 provides 20-Bits of high-
FSTU16861MTD
20-Bit Bus Switch with -2V Undershoot
FSTU16861 20-Bit Bus Switch with −2V Undershoot Protection May 2001 Revised May 2001 FSTU16861 20-Bit Bus Switch with −2V Undershoot Protection General Description Features The Fairchild Switch FSTU16861 provides 20-Bits of high-Undershoot hardened to −2V (A and B Ports) speed CMOS TTL-compatible bus switching. The low On4Ω switch connection between two ports Resistance of the switch allows inputs to be connected to Minimal propagation delay through the switch outputs without adding propagation delay or generating Low l additional ground bounce noise. CC Zero bounce in flow-through mode The device is organized as a 10-bit or 20-Bit bus switch. When OE is LOW, the switch is ON and Port 1A is con-Control inputs compatible with TTL level 1 nected to Port 1B. When OE is LOW, Port 2A is connected 2See Application Note AN-5008 for details to Port 2B. When OE is HIGH, a high impedance state X exists between the A and B Ports. The A and B Ports are protected against undershoot to support an extended range to 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 the switch on. When OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports. Ordering Code: Order Number Package Number Package Description FSTU16861MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. UHC is a trademark of . © 2001 DS500422
