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FST3253 Dual 4:1 Multiplexer/Demultiplexer Bus Switch
September 1997
Revised December 1999
FST3253
Dual 4:1 Multiplexer/Demultiplexer Bus Switch
General Description
The Fairchild Switch FST3253 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.
Features
s
4Ω 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
FST3253M
FST3253QSC
FST3253MTC
Package Number
M16A
MQA16
MTC16
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
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