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PDF FST34X2245QSP Data sheet ( Hoja de datos )
| Número de pieza | FST34X2245QSP | |
| Descripción | 32-Bit Bus Switch with 25 Series Resistors in Outputs | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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December 2001
Revised January 2005
FST34X2245
32-Bit Bus Switch with 25: Series Resistors in Outputs
General Description
The Fairchild Switch FST34X2245 provides 32-bits of high
speed CMOS TTL-compatible bus switching in a standard
flow-through mode. 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 32-bit switch. When OE is
LOW, the switch is ON and Port A is connected to Port B.
When OE is HIGH, the switch is OPEN and a high-imped-
ance state exists between the two ports.
:The FST34X2245 has equivalent 25 series resistors to
reduce signal-reflection noise, eliminating the need for
external terminating resistors.
Features
:■ 25 switch connection between two ports
■ Minimal propagation delay through the switch
■ Low lCC
■ Zero bounce in flow-through mode
■ Control inputs compatible with TTL level
■ 32-bit version of FST32245
■ Packaged in 20.5mm 80-lead package
Ordering Code:
Order Number
Package
Number
Package Description
FST34X2245QSPX
MQA80A 80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide
FST34X2245QSPX_NL MQA80A Pb-Free 80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide
(Note 1)
Note 1: “_NL” indicates Pb-Free product (per JEDEC J-STD-020B). Device is available in Tape and Reel only.
Logic Diagram
© 2005 Fairchild Semiconductor Corporation DS500594
www.fairchildsemi.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted
80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide
Package Number MQA80A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
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