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PDF FST32253 Data sheet ( Hoja de datos )
| Número de pieza | FST32253 | |
| Descripción | Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25 Series Resistor in Outputs | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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August 2001
Revised September 2001
FST32253
Dual 4:1 Multiplexer/Demultiplexer Bus Switch
with 25Ω 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, S0 and S1 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 25Ω series resistor to
reduce signal-reflection noise, eliminating the need for
external terminating resistors.
Features
s 25Ω switch 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
Ordering Code:
Order Number Package Number
Package Description
FST32253M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
FST32253QSC
MQA16
16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
FST32253MTC
MTC16
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 “X” to the ordering code.
Logic Diagram
Connection Diagram
Pin Descriptions
Pin Name
OE1, OE2
S0, S1
A
B1, B2, B3, B4
Description
Bus Switch Enables
Select Inputs
Bus A
Bus B
© 2001 Fairchild Semiconductor Corporation DS500472
Truth Table
S1 S0 OE1 OE2
XXHX
XXXH
LLLL
LHL L
HLLL
HHL L
Function
Disconnect 1A
Disconnect 2A
A = B1
A = B2
A = B3
A = B4
www.fairchildsemi.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC16
Technology Description
The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its
74LVX3L384 (FST3384) bus switch product.
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
5 www.fairchildsemi.com
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| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet FST32253.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
| FST32253 | Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25 Series Resistor in Outputs | Fairchild Semiconductor |
| FST32253M | Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25 Series Resistor in Outputs | Fairchild Semiconductor |
| FST32253MTC | Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25 Series Resistor in Outputs | Fairchild Semiconductor |
| FST32253QSC | Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25 Series Resistor in Outputs | Fairchild Semiconductor |
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