FSTU32X384QSP ,20-Bit Low Power Bus Switch with -2V Undershoot ProtectionFeaturesThe Fairchild Switch FSTU32X384 provides 20 bits of high-
FSTU32X384QSP
20-Bit Low Power Bus Switch with -2V Undershoot Protection
FSTU32X384 20-Bit Low Power Bus Switch with −2V Undershoot Protection May 2002 Revised June 2002 FSTU32X384 20-Bit Low Power Bus Switch with −2V Undershoot Protection General Description Features The Fairchild Switch FSTU32X384 provides 20 bits of high-4Ω switch connection between two ports speed CMOS TTL-compatible bus switches. The low OnMinimal propagation delay through the switch Resistance of the switch allows inputs to be connected to Ultra low power with < 0.1 μA typical I CC outputs without adding propagation delay or generating Zero ground bounce in flow-through mode additional ground bounce noise. The device is organized as four 5-bit switches with separate bus enable (OE) sig-Control inputs compatible with TTL level nals. When OE is LOW, the switch is ON and Port A is con- See Application Note AN-5008 for details on nected to Port B. When OE is HIGH, the switch is OPEN FSTU - Undershoot Protected Fairchild Switch Family and a high-impedance state exists between the two ports. The A and B Ports are protected against undershoot 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. Ordering Code: Package Order Number Package Description Number FSTU32X384QSP MQA48A 48-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Diagram UHC is a trademark of . © 2002 DS500705
