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FST34170MTD fiches techniques PDF

Fairchild Semiconductor - 17-Bit to 34-Bit Multiplexer/Demultiplexer Bus Switch

Numéro de référence FST34170MTD
Description 17-Bit to 34-Bit Multiplexer/Demultiplexer Bus Switch
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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FST34170MTD fiche technique
October 2000
Revised December 2000
FST34170
17-Bit to 34-Bit Multiplexer/Demultiplexer Bus Switch
General Description
The Fairchild Switch FST34170 is a 17-bit to 34-bit high-
speed CMOS TTL-compatible multiplexer/demultiplexer
bus switch. The low on resistance of the switch allows
inputs to be connected to outputs without adding propaga-
tion delay or generating additional ground bounce noise.
The device can be used in applications where two buses
need to be addressed simultaneously. The FST34170 is
designed so that the A Port demultiplexes into B1 or B2 or
both.
Two select (SEL1, SEL2) inputs provide switch enable con-
trol.
Features
s Slower Output Enable times prevent signal disruption
s 4switch connection between two ports.
s Minimal propagation delay through the switch.
s Low lCC.
s Zero bounce in flow-through mode.
s Control inputs compatible with TTL level.
s See Applications Note AN-5008 for details
Ordering Code:
Order Number Package Number
Package Description
FST34170MTD
MTD56
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Connection Diagram
Truth Table
Inputs
SEL1
SEL2
LH
HL
LL
HH
Function
x A = x B1
x A = x B2
x A = x B1 and x B2
Switch Open
Pin Descriptions
Pin Name
SEL1, SEL2
A
B1, B2
UHCis a trademark of Fairchild Semiconductor Corporation.
© 2000 Fairchild Semiconductor Corporation DS500450
Description
Select Inputs
Bus A
Bus B
www.fairchildsemi.com

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