FST34X245 Fairchild Semiconductor, FST34X245 Datasheet

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FST34X245

Manufacturer Part Number
FST34X245
Description
32-Bit Bus Switch (Preliminary)
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
FST34X245QSP
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
© 2001 Fairchild Semiconductor Corporation
FST34X245QSPX
(Note 1)
FST34X245
32-Bit Bus Switch (Preliminary)
General Description
The Fairchild Switch FST34X245 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.
Ordering Code:
Note 1: Package available in Tape and Reel only.
Logic Diagram
Order Number
Package Number
MQA80A
80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide
[TAPE and REEL]
DS500554
Features
4 switch connection between two ports
Minimal propagation delay through the switch
Low l
Zero bounce in flow-through mode
Control inputs compatible with TTL level
32-bit version of FST3245
Packaged in 20.5mm 80-lead package
Package Description
CC
September 2001
Revised September 2001
www.fairchildsemi.com
Preliminary

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FST34X245 Summary of contents

Page 1

... FST34X245 32-Bit Bus Switch (Preliminary) General Description The Fairchild Switch FST34X245 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 ...

Page 2

Connection Diagram www.fairchildsemi.com Pin Descriptions Pin Name Description OE Bus Switch Enable n A Bus Bus Connect Function Table Input OE Function n L Connect H Disconnect 2 Preliminary ...

Page 3

Absolute Maximum Ratings Supply Voltage ( Switch Voltage ( Input Voltage (V ) (Note Input Diode Current ( Output (I ) Sink Current OUT DC ...

Page 4

AC Electrical Characteristics Symbol Parameter Propagation Delay Bus to Bus PHL PLH (Note Output Enable Time PZH PZL Output Disable Time PHZ PLZ Note 8: This parameter is guaranteed by ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted 80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide 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 ...

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