IDT74FST1632861
20-BIT, TWO PORT BUS SWITCH WITH RESISTOR
INDUSTRIAL TEMPERATURE RANGE
20-BIT, TWO PORT BUS
SWITCH WITH RESISTOR
IDT74FST1632861
FEATURES:
DESCRIPTION:
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The FST1632861 belongs to IDT's family of Bus switches. Bus switch
devices perform the function of connecting or isolating two ports without
providing any inherent current sink or source capability. They generate
little or no noise of their own while providing a low resistance path for an
external driver. These devices connect input and output ports through an
n-channel FET. When the gate-to-source junction of this FET is adequately
forward-biased, the device conducts and the resistance between input and
output ports is small. With-out adequate bias on the gate-to-source junction
of the FET, the FET is turned off, therefore with no VCC applied, the device
has hot insertion capability.
The FST1632861 bus switch has a built-in 28Ω series resistor to reduce
noise which can result from reflections. This 28Ω built-in series resistor
eliminates the need for an external terminating resistor.
Bus switches provide zero delay paths
Low switch on-resistance: 28Ω
Ω
TTL-compatible input and output levels
ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• Hot insertion capability
• Very low power dissipation
• Available in SSOP, TSSOP, and TVSOP packages
FUNCTIONAL BLOCK DIAGRAM
1OE
2OE
A0
B0
A10
B10
A1
B1
A11
B11
A2
B2
A12
B12
A3
B3
A13
B13
A4
B4
A14
B14
A5
B5
A15
B15
A6
B6
A16
B16
A7
B7
A17
B17
A8
B8
A18
B18
A9
B9
A19
B19
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
JUNE 2006
1
© 2006 Integrated Device Technology, Inc.
DSC-5582/4
