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FST32253M Datasheet

  • FST32253M

  • Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25з Seri...

  • 5頁(yè)

  • FAIRCHILD

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FST32253 Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25鈩?Series Resistor in Outputs
August 2001
Revised September 2001
FST32253
Dual 4:1 Multiplexer/Demultiplexer Bus Switch
with 25
鈩?/div>
Series Resistor in Outputs
General Description
The Fairchild Switch FST32253 is a dual 4:1 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 propagation
delay or generating additional ground bounce noise.
When OE is LOW, S
0
and S
1
connect the A Port to the
selected B Port output. When OE is HIGH, the switch is
OPEN and a high-impedance state exists between the two
ports.
The FST32253 has an equivalent 25
鈩?/div>
series resistor to
reduce signal-reflection noise, eliminating the need for
external terminating resistors.
Features
s
25
鈩?/div>
switch connection between two ports
s
Minimal propagation delay through the switch
s
Low l
CC
s
Zero bounce in flow-through mode
s
Control inputs compatible with TTL level
Ordering Code:
Order Number
FST32253M
FST32253QSC
FST32253MTC
Package Number
M16A
MQA16
MTC16
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter 鈥淴鈥?to the ordering code.
Logic Diagram
Connection Diagram
Truth Table
Pin Descriptions
Pin Name
OE
1
, OE
2
S
0
, S
1
A
B
1
, B
2
, B
3
, B
4
Description
Bus Switch Enables
Select Inputs
Bus A
Bus B
DS500472
S
1
X
X
L
L
H
H
S
0
X
X
L
H
L
H
OE
1
H
X
L
L
L
L
OE
2
X
H
L
L
L
L
Function
Disconnect 1A
Disconnect 2A
A
=
B
1
A
=
B
2
A
=
B
3
A
=
B
4
漏 2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com

FST32253M 產(chǎn)品屬性

  • Fairchild Semiconductor

  • 編碼器、解碼器、復(fù)用器和解復(fù)用器

  • Multiplexer

  • FST

  • 8 / 2

  • 1.25 ns at 4 V to 5.5 V

  • 5.5 V

  • 4 V

  • + 85 C

  • SMD/SMT

  • SOIC-16

  • Tube

  • - 40 C

  • 8

  • 2

  • 48

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