參數資料
| 型號： | ISL54228IRUZ-T |
| 廠商： | Intersil |
| 文件頁數： | 1/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC USB SWITCH DPST OVP 8TQFN |
| 標準包裝： | 3,000 |
| 功能： | 開關 |
| 電路： | 2 x SPST |
| 導通狀態電阻： | 17 歐姆 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 5.25 V |
| 電流 - 電源： | 45µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-XFQFN |
| 供應商設備封裝： | 8-UTQFN（1.2x1.4） |
| 包裝： | 帶卷 (TR) |
1
ISL54228
High-Speed USB 2.0 (480Mbps) DPST Switch with
Overvoltage Protection (OVP)
ISL54228
The Intersil ISL54228 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 device has two logic control pins (OE and LP) to
control the SPST switches.
The ISL54228 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 ISL54228 is available in 8 Ld 1.2mmx1.4mm
TQFN and 8 Ld 2mmx2mm TDFN packages. It operates
over a temperature range of -40°C 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)
Low Power State
Power OFF Protection
COM Pins Overvoltage Detection and 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 TQFN and TDFN Packages
Pb-Free (RoHS Compliant)
Compliant with USB 2.0 Short Circuit and
Overvoltage Requirements Without Additional
External Components
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
ISL54228
USB
TRANSCEIVER
HIGH-SPEED
USB
CONNE
CTOR
COM -
COM +
GND
D+
D-
VDD
OE
P
VBUS
D-
D+
GND
OVP
DET
500Ω
LP
LOGIC
CONTROL
3.3V
TIME SCALE (0.2ns/DIV)
VOLTAGE
SCALE
(0.1V/DI
V)
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
FN7628.0
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