FST16861 Fairchild Semiconductor, FST16861 Datasheet

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FST16861

Manufacturer Part Number
FST16861
Description
20-Bit Bus Switch
Manufacturer
Fairchild Semiconductor
Datasheet
1.FST16861.pdf (4 pages)
© 2000 Fairchild Semiconductor Corporation
FST16861MTD
FST16861
20-Bit Bus Switch
General Description
The Fairchild Switch FST16861 provides 20-Bits of high-
speed CMOS TTL-compatible bus switching. The low ON
resistance of the switch allows inputs to be connected to
outputs without adding propagation delay or generating
additional ground bounce noise.
The device is organized as a 10-bit or 20-Bit bus switch.
When OE
nected to Port 1B. When OE
to Port 2B. When OE
exists between the A and B Ports.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Truth Table
Order Number
OE
H
H
L
L
1
Inputs
1
is LOW, the switch is ON and Port 1A is con-
OE
H
H
L
L
Package Number
2
X
is HIGH, a high impedance state
MTD48
2
1A
1A
is LOW, Port 2A is connected
1A, 1B
Z
Z
Inputs/Outputs
1B
1B
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
2A
2A
2A, 2B
DS500318
Z
Z
2B
2B
Features
Connection Diagram
Pin Descriptions
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.
Package Description
CC
.
Pin Name
OE
1A, 2A
1B, 2B
1
, OE
2
March 2000
Revised December 2000
Bus Switch Enables
Description
Bus A
Bus B
www.fairchildsemi.com

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FST16861 Summary of contents

Page 1

... FST16861 20-Bit Bus Switch General Description The Fairchild Switch FST16861 provides 20-Bits of high- speed CMOS TTL-compatible bus switching. The low ON resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device is organized as a 10-bit or 20-Bit bus switch. ...

Page 2

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

Page 3

AC Electrical Characteristics Symbol Parameter Prop Delay Bus-to-Bus (Note 7) PHL PLH Output Enable Time PZH PZL Output Disable Time PHZ PLZ Note 7: This parameter is guaranteed by design but ...

Page 4

Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Technology Description The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its 74LVX3L384(FST3384) bus ...

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