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參數(shù)資料
| 型號(hào)： | PACUSB-U2R |
| 廠商： | California Micro Devices Corporation |
| 英文描述： | Upstream USB Port Terminator |
| 中文描述： | 上行USB端口終結(jié)者 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大小： | 116K |
| 代理商： | PACUSB-U2R |
2006 California Micro Devices Corp. All rights reserved.
05/01/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.cmd.com
1
PACUSB-U1/U2/U3
Upstream USB Port Terminator
Features
One upstream USB port terminator, EMI filter and
transient overvoltage protector in a single surface-
mount package
Compact SC70 or SOT23 package saves board
space and lowers manufacturing costs compared
to discrete solutions
ESD protection to
±
30kV contact discharge per
MIL-STD-883D, method 3015
ESD protection to
±
15kV contact discharge per
IEC 61000-4-2 international standard
Lead-free version available
Applications
ESD protection and termination of USB port
All USB peripherals (PC printers, scanners,
zip drives, etc.)
PDAs / handheld PCs
Digital cameras
Wireless Handets
MP3 Players
Cable Modems
Product Description
The PACUSB-U1, PACUSB-U2, and PACUSB-U3 are
single-channel USB upstream-port termination net-
works.
The PACUSB-U1/U2/U3 integrate EMI/RFI filter com-
ponents R1 and C1, as recommended by the USB
specification. Because these are upstream USB
devices, they are terminated with a single 1.5k
Ω
pull-up
resistor to V
3.3
(R2).
There are three options for the value of the series
resistor R1:
For PACUSB-U1, R1=15
Ω
For PACUSB-U2, R1=33
Ω
For PACUSB-U3, R1=22
Ω
This series resistance plus the USB driver output resis-
tance must be close to the USB cable’s characteristic
impedance of 45
Ω
(90
Ω
balanced) to minimize trans-
mission line reflections.
In addition, these parts provide a very high level of pro-
tection for sensitive electronic components that may be
subjected to electrostatic discharge (ESD). The input
and output pins are designed and characterized to dis-
sipate ESD strikes of
±
15kV safely, a level well beyond
the maximum requirements of the IEC 61000-4-2 inter-
national standard.
Using the MIL-STD-883D (Method 3015) specification
for Human Body Model (HBM) ESD, all pins are pro-
tected for contact discharges to greater than
±
30kV.
The PACUSB-U1/U2/U3 is housed in either a 6-pin
SC70 or 6-pin SOT23 package and is available with
optional lead-free finishing.
Vcc
SC70 6
R1
GND
OUT 1
OUT 2
1
2
3
C1
C1
R1
R2
6
5
4
D1_i
D2_i
Electrical Schematic
i = input
c = connector
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PACUSB-U2Y6 | Upstream USB Port Terminator |
| PACUSB-U2Y6R | Upstream USB Port Terminator |
| PACUSB-U3 | Upstream USB Port Terminator |
| PACUSB-U3R | Upstream USB Port Terminator |
| PACUSB-U3Y6 | Upstream USB Port Terminator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PACUSB-U2Y6 | 制造商:CALMIRCO 制造商全稱(chēng):California Micro Devices Corp 功能描述:Upstream USB Port Terminator |
| PACUSB-U2Y6R | 功能描述:接口 - 專(zhuān)用 USB Upstream Termina RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| PACUSB-U3 | 制造商:CALMIRCO 制造商全稱(chēng):California Micro Devices Corp 功能描述:Upstream USB Port Terminator |
| PACUSB-U3R | 功能描述:接口 - 專(zhuān)用 USB w/ ESD 22 Ohms RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| PACUSB-U3Y6 | 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:Upstream USB Port Terminator |
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