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PDF FSTU32X384 Data sheet ( Hoja de datos )
| Número de pieza | FSTU32X384 | |
| Descripción | 20-Bit Low Power Bus Switch with -2V Undershoot Protection | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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May 2002
Revised June 2002
FSTU32X384
20-Bit Low Power Bus Switch
with −2V Undershoot Protection
General Description
The Fairchild Switch FSTU32X384 provides 20 bits of high-
speed CMOS TTL-compatible bus switches. 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 four 5-bit switches with separate bus enable (OE) sig-
nals. When OE is LOW, the switch is ON and Port A is con-
nected to Port B. When OE is HIGH, the switch is OPEN
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.
Features
s 4Ω switch connection between two ports
s Minimal propagation delay through the switch
s Ultra low power with < 0.1 µA typical ICC
s Zero ground bounce in flow-through mode
s Control inputs compatible with TTL level
s See Application Note AN-5008 for details on
FSTU - Undershoot Protected Fairchild Switch Family
Ordering Code:
Order Number
Package
Number
Package Description
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 Fairchild Semiconductor Corporation.
© 2002 Fairchild Semiconductor Corporation DS500705
www.fairchildsemi.com
1 page  
AC Loading and Waveforms
Note: Input driven by 50 Ω source terminated in 50 Ω
Note: CL includes load and stray capacitance
Note: Input PRR = 1.0 MHz, tW = 500 ns
FIGURE 2. AC Test Circuit
FSTU32X384 VIN vs. RON (Typ)
FIGURE 3. AC Waveforms
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet FSTU32X384.PDF ] | |
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