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FST16861 Schematic ( PDF Datasheet ) - Fairchild Semiconductor

Teilenummer FST16861
Beschreibung 20-Bit Bus Switch
Hersteller Fairchild Semiconductor
Logo Fairchild Semiconductor Logo 




Gesamt 4 Seiten
FST16861 Datasheet, Funktion
March 2000
Revised March 2000
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 OE1 is LOW, the switch is ON and Port 1A is con-
nected to Port 1B. When OE2 is LOW, Port 2A is connected
to Port 2B. When OEX is HIGH, a high impedance state
exists between the A and B Ports.
Features
s 4switch 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
FST16861MTD
MTD48
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Logic Diagram
Pin Descriptions
Pin Name
OE1, OE2
1A, 2A
1B, 2B
Description
Bus Switch Enables
Bus A
Bus B
Truth Table
Inputs
OE1
L
L
H
H
OE2
L
H
L
H
© 2000 Fairchild Semiconductor Corporation DS500318
Inputs/Outputs
1A, 1B
1A = 1B
1A = 1B
Z
Z
2A, 2B
2A = 2B
Z
2A = 2B
Z
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