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FSTD162861 Datasheet

  • FSTD162861

  • 20-Bit Bus Switch with Level Shifting

  • 175.18KB

  • Fairchild

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Preliminary
FSTD162861 20-Bit Bus Switch with Level Shifting and 25鈩?Series Resistors in Outputs (Preliminary)
June 2001
Revised June 2001
FSTD162861
20-Bit Bus Switch with Level Shifting
and 25
鈩?/div>
Series Resistors in Outputs (Preliminary)
General Description
The Fairchild Switch FSTD162861 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. A diode to V
CC
has been
integrated into the circuit to allow for level shifting between
5V inputs and 3.3V outputs.
The device is organized as a 10-bit or 20-bit bus switch.
When OE
1
is LOW, the switch is ON and Port 1A is con-
nected to Port 1B. When OE
2
is LOW, Port 2A is connected
to Port 2B. When OE
X
is HIGH, a high impedance state
exists between the A and B Ports. The FSTD162861 has
equivalent 25
鈩?/div>
series resistors to reduce signal-reflection
noise, eliminating the need for external terminating resis-
tors.
Features
s
25
鈩?/div>
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
s
TruTranslation
錚?/div>
voltage translation from 5.0V inputs to
3.3V outputs
Ordering Code:
Order Number
FSTD162861MTD
Package Number
MTD48
Package Description
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 鈥淴鈥?to the ordering code.
TruTranslation錚?is a trademark of Fairchild Semiconductor Corporation.
漏 2001 Fairchild Semiconductor Corporation
DS500063
www.fairchildsemi.com

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