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FSTU32X800 Datasheet(PDF) 1 Page - Fairchild Semiconductor

No. de Pieza. FSTU32X800
Descripción  20-Bit Bus Switch with Precharged Outputs and -2V Undershoot Protection
Descarga  5 Pages
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Fabricante  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
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FSTU32X800 Datasheet(HTML) 1 Page - Fairchild Semiconductor

   
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© 2002 Fairchild Semiconductor Corporation
DS500791
www.fairchildsemi.com
November 2002
Revised October 2006
FSTU32X800
20-Bit Bus Switch with Precharged Outputs
and
−2V Undershoot Protection
General Description
The Fairchild Switch FSTU32X800 provides 20-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 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. The device also pre-
charges the B Port to a selectable bias voltage (BiasV) to
minimize live insertion noise.
The device is organized as two 10-bit switches with a bus
enable (OEn) signal. When OEn is LOW, the switch is ON
and Port A is connected to Port B. When OEn is HIGH, the
switch is OPEN and the B Port is precharged to BiasV
through an equivalent 10-k
Ω resistor.
Features
s 4
Ω switch connection between two ports
s Undershoot Hardened to -2.0V
s Soft enable turn-on to minimize bus-to-bus charge
sharing during enable
s Low lCC
s Zero bounce in flow-through mode
s Output precharge to minimize live insertion noise
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 registered trademark of Fairchild Semiconductor Corporation.
Order Number
Package
Number
Package Description
FSTU32X800QSP
MQA48A
48-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide


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