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ISL54224IRUEVAL1Z 数据表(PDF) 1 Page - Intersil Corporation

部件名 ISL54224IRUEVAL1Z
功能描述  High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP) and Overvoltage Indicator Output
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

ISL54224IRUEVAL1Z 数据表(HTML) 1 Page - Intersil Corporation

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1
High-Speed USB 2.0 (480Mbps) Multiplexer with
Overvoltage Protection (OVP) and Overvoltage
Indicator Output
ISL54224
The Intersil ISL54224 is a single supply dual 2:1
multiplexer that can operate from a single 2.7V to 5.25V
supply. It contains two SPDT (Single Pole/Double
Throw) switches configured as a DPDT. The part was
designed for switching of USB data signals in portable
battery powered products.
The 6.5Ω switches were specifically designed to pass
USB high speed/full speed data signals. They have high
bandwidth and low capacitance to pass USB high speed
data signals with minimal distortion.
The ISL54224 has OVP circuitry on the D-/D+ com pins
that opens the USB in-line switches when the voltage at
these pins exceeds 3.8V (typ) or goes negative by -0.5V
(typ). It isolates fault voltages up to +5.25V or down to
-5V from getting passed to the other-side of the switch,
thereby protecting the USB transceivers.
The digital logic inputs are 1.8V logic compatible when
operated with a 2.7V to 3.6V supply. The ISL54224 has
an open drain OE/ALM pin that can be driven Low to
open all switches and outputs a Low when the OVP
circuitry is activated. It can be used to facilitate proper
bus disconnect and connection when switching between
the USB sources.
The ISL54224 is available in 10 Ld 1.8mmx1.4mm
µTQFN and 10 Ld TDFN packages. It operates over a
temperature range of -40 to +85°C.
Features
• High-Speed (480Mbps) and Full-Speed (12Mbps)
Signaling Capability per USB 2.0
• 1.8V Logic Compatible (2.7V to +3.6V supply)
• OE/ALM Pin to Open all Switches and Indicate
Overvoltage Fault Condition
• Power OFF Protection
• D-/D+ Pins Overvoltage Protection for +5.25V and
-5V Fault Voltages
• -3dB Frequency . . . . . . . . . . . . . . . . . . 780MHz
• Low ON Capacitance @ 240MHz . . . . . . . . . 3.3pF
• Low ON-Resistance . . . . . . . . . . . . . . . . . . 6.5Ω
• Single Supply Operation (VDD) . . . . 2.7V to 5.25V
• Available in µTQFN and TDFN Packages
• Pb-Free (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit and
Overvoltage Requirements Without Additional
External Components
Applications*(see page 16)
• MP3 and other Personal Media Players
• Cellular/Mobile Phones
•PDA’s
• Digital Cameras and Camcorders
• USB Switching
Related Literature*(see page 16)
•See AN1571 “ISL54224IRTZEVAL1Z Evaluation
Board User's Manual”
Typical Application
USB 2.0 HS Eye Pattern With
Switches in the Signal Path
ISL54224
USB
TRANSCEIVER
D-
D+
GND
HSD1+
HSD1-
VDD
OE/ALM
µP
VBUS
D-
D+
GND
OVP
500Ω
SEL
LOGIC
CONTROL
3.3V
USB
TRANSCEIVER
100kΩ
HSD2+
HSD2-
3.3V
TIME SCALE (0.2ns/DIV)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
June 7, 2010
FN6969.0


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