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ISL54226 Datasheet(PDF) 1 Page - Intersil Corporation

No. de pieza ISL54226
Descripción Electrónicos  High-Speed USB 2.0 (480Mbps) DPST Switch with Overvoltage Protection (OVP) and Dedicated Charger Port Detection
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Fabricante Electrónico  INTERSIL [Intersil Corporation]
Página de inicio  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL54226 Datasheet(HTML) 1 Page - Intersil Corporation

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1
High-Speed USB 2.0 (480Mbps) DPST Switch with
Overvoltage Protection (OVP) and Dedicated
Charger Port Detection
ISL54226
The Intersil ISL54226 is a single supply, dual SPST
(Single Pole/Single Throw) switch that is configured as a
DPST. It can operate from a single 2.7V to 5.25V supply.
The part was designed for switching or isolating a USB
high-speed source or a USB high-speed and full-speed
source in portable battery powered products.
The 3.5Ω SPST switches were specifically designed to
pass USB full speed and USB high-speed data signals.
They have high bandwidth and low capacitance to pass
USB high-speed data signals with minimal distortion.
The ISL54226 has OVP detection circuitry on the COM
pins to open the SPST switches when the voltage at
these pins exceeds 3.8V or goes negative by -0.45V. 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 down-stream transceiver.
The OE/ALM logic pin is an open drain input/output that
can be driven to open the switches or monitored to tell
when the part is in an overvoltage state.
The part has an interrupt (INT) output pin to indicate a
1 to 1 (high/high) state on the COM lines to inform the
µ
processor when entering a dedicated charging port
mode of operation.
The ISL54226 is available in 8 Ld 1.2mmx1.4mm
µTQFN and 8 Ld 2mmx2mm 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
• Charger Interrupt Indicator Output
• Power OFF Protection
• COM Pins Overvoltage Protection for +5.25V and -5V
Fault Voltages
• -3dB Frequency . . . . . . . . . . . . . . . . . . . . 790MHz
• Low ON Capacitance @ 240MHz . . . . . . . . . . . . 2pF
• Low ON-Resistance . . . . . . . . . . . . . . . . . . . . 3.5Ω
• 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
Typical Application
USB 2.0 HS Eye Pattern with
Switches in the Signal Path
ISL54226
USB
TRANSCEIVER
HIGH-SPEED
COM -
COM +
INT
GND
D+
D-
VDD
OE/ALM
µP
VBUS
D-
D+
GND
OVP
DET
500Ω
LOGIC
CONTROL
3.3V
3.3V
100kΩ
4MΩ
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.
July 29, 2010
FN7614.0


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