FST3126 Fairchild Semiconductor, FST3126 Datasheet

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FST3126

Manufacturer Part Number
FST3126
Description
Quad Bus Switch
Manufacturer
Fairchild Semiconductor
Datasheet

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© 1999 Fairchild Semiconductor Corporation
FST3126M
FST3126QSC
FST3126MTC
FST3126
Quad Bus Switch
General Description
The Fairchild Switch FST3126 provides four high-speed
CMOS TTL-compatible bus switches. The low on resis-
tance of the switch allows inputs to be connected to out-
puts without adding propagation delay or generating
additional ground bounce noise.
The device is organized as four 1-bit switches with sepa-
rate OE inputs. When OE is HIGH, the switch is ON and
Port A is connected to Port B. When OE is LOW, the switch
is OPEN and a high-impedance state exists between the
two ports.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Pin Descriptions
Order Number
OE
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
1
, OE
Pin Name
2
NC
, OE
Package Number
3
, OE
MQA16
MTC14
M14A
4
Bus Switch Enables
Not Connected
Description
Bus A
Bus B
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
DS500044
Features
Connection Diagrams
Truth Table
4 switch connection between two ports.
Minimal propagation delay through the switch.
Low l
Zero bounce in flow-through mode.
Control inputs compatible with TTL level.
CC
Package Description
Pin Assignment for SOIC and TSSOP
.
Inputs
Pin Assignment for QSOP
OE
H
L
August 1997
Revised December 1999
Inputs/Outputs
A
www.fairchildsemi.com
A,B
Z
B

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FST3126 Summary of contents

Page 1

... FST3126 Quad Bus Switch General Description The Fairchild Switch FST3126 provides four high-speed CMOS TTL-compatible bus switches. The low on resis- tance of the switch allows inputs to be connected to out- puts without adding propagation delay or generating additional ground bounce noise. The device is organized as four 1-bit switches with sepa- rate OE inputs ...

Page 2

Absolute Maximum Ratings Supply Voltage ( Switch Voltage ( Input Voltage (V ) (Note Input Diode Current ( Output (I ) Sink Current OUT DC ...

Page 3

AC Electrical Characteristics Symbol Parameter t ,t Prop Delay Bus to Bus (Note 6) PHL PLH Output Enable Time PZH PZL Output Disable Time PHZ PLZ Note 6: This parameter is guaranteed by design ...

Page 4

Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow 16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide www.fairchildsemi.com Package Number M14A Package Number MQA16 4 ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Technology Description The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its 74LVX3L384 ...

Page 6

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 ...

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