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FSTU3257MX Datasheet

  • FSTU3257MX

  • 2-Input Digital Multiplexer

  • 6頁

  • ETC

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FSTU3257 Quad 2:1 Multiplexer/Demultiplexer Bus Switch with
鈭?V
Undershoot Protection
August 1999
Revised December 2000
FSTU3257
Quad 2:1 Multiplexer/Demultiplexer Bus Switch with
鈭?/div>
2V Undershoot Protection
General Description
The Fairchild Switch FSTU3257 is a quad 2:1 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, the select pin connects the A Port to the
selected B Port output. The A and B Ports are 鈥渦ndershoot
hardened鈥?with Undershoot Hardened Circuit (UHC
錚?/div>
) pro-
tection to support an extended range of 2.0V below
ground. Fairchild鈥檚 integrated UHC senses undershoot at
the I/O and responds by preventing voltage differentials
from developing and turning on the switch. When OE is
HIGH, the switch is OPEN and a high-impedance state
exists between the two ports.
Features
s
Undershoot hardened to
鈭?/div>
2V (A and B Ports)
s
Soft enable turn-on to minimize bus to bus charge
sharing during enable
s
4
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.
s
See Applications Note AN-5008 for details
Ordering Code:
Order Number
FSTU3257M
FSTU3257QSC
FSTU3257MTC
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
Pin Descriptions
Pin Name
OE
S
A
B
1
鈥揃
2
Description
Bus Switch Enable
Select Input
Bus A
Bus B
Truth Table
S
X
L
H
OE
H
L
L
Function
Disconnect
A
=
B
1
A
=
B
2
UHC錚?is a trademark of Fairchild Semiconductor Corporation.
漏 2000 Fairchild Semiconductor Corporation
DS500302
www.fairchildsemi.com

FSTU3257MX 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 / 4

  • 0.25 ns at 4 V to 5.5 V

  • 5.5 V

  • 4 V

  • + 85 C

  • SMD/SMT

  • SOIC-16

  • Reel

  • - 40 C

  • 8

  • 4

  • 2500

FSTU3257MX相關(guān)型號PDF文件下載

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