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參數資料
| 型號： | FST3257QSCX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quad 2:1 Multiplexer/Demultiplexer Bus Switch |
| 中文描述： | CBT/FST/QS/5C/B SERIES, 4 LINE TO 2 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 |
| 封裝： | 0.150 INCH, GREEN, MO-137, QSOP-16 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 96K |
| 代理商： | FST3257QSCX |
1999 Fairchild Semiconductor Corporation
DS500057
www.fairchildsemi.com
September 1997
Revised December 1999
F
FST3257
Quad 2:1 Multiplexer/Demultiplexer Bus Switch
General Description
The Fairchild Switch FST3257 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. When OE is HIGH, the switch is
OPEN and a high-impedance state exists between the two
ports.
Features
I
4
switch connection between two ports.
I
Minimal propagation delay through the switch.
I
Low l
CC
.
I
Zero bounce in flow-through mode.
I
Control inputs compatible with TTL level.
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Diagram
Pin Descriptions
Connection Diagram
Truth Table
Order Number
FST3257M
FST3257QSC
FST3257MTC
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
Pin Name
Description
OE
S
A
B
1
–
B
2
Bus Switch Enable
Select Input
Bus A
Bus B
S
OE
Function
X
H
Disconnect
L
L
A
=
B
1
H
L
A
=
B
2
相關PDF資料 |
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|---|---|
| FST3257 | Quad 2:1 Multiplexer/Demultiplexer Bus Switch(四組4：1多路復用器/多路分解器總線開關) |
| FST3257M | Quad 2:1 Multiplexer/Demultiplexer Bus Switch |
| FST3257MTC | Quad 2:1 Multiplexer/Demultiplexer Bus Switch |
| FST3257MTCX | Quad 2:1 Multiplexer/Demultiplexer Bus Switch |
| FST3257MX | Quad 2:1 Multiplexer/Demultiplexer Bus Switch |
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