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PACUSB-D1Y5 参数 Datasheet PDF下载

PACUSB-D1Y5图片预览
型号: PACUSB-D1Y5
PDF下载: 下载PDF文件 查看货源
内容描述: USB下行端口终结者 [USB Downstream Port Terminator]
分类和应用: LTE
文件页数/大小: 9 页 / 315 K
品牌: CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
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PACUSB-D1/D2/D3
USB Downstream Port Terminator
Features
A low-capacitance USB downstream port termina-
tor, EMI filter, and transient over-voltage (ESD)
protector in a single surface-mounted package
ESD protection to +20kV contact discharge, per
MIL-STD-883D, Method 3015
ESD protection to +15kV contact discharge, per
IEC 61000-4-2 International Standard
Compact SOT23-5 and SC70-5 package options
save board space and lower manufacturing costs
compared to discrete solutions
Capacitors matched to a precision exceeding the
USB specification
Pin-compatible with ST Microelectronics
USBDFxxW5 USB Downstream Port Terminator
Lead-free versions available
Product Description
The PACUSB-D1/D2/D3 is a single-channel USB
downstream-port termination network. It integrates
EMI/RFI filter components R1 and C1, as recom-
mended by the USB specification as well as the
required 15kΩ pull-down resistors (R2) to GND. In
addition, PACUSB-D1/D2/D3 provides a very high
level of protection for sensitive electronic components
that may be subjected to electrostatic discharge (ESD).
The device pins will safely dissipate ESD strikes of
+15kV, exceeding the maximum requirements of the
IEC 61000-4-2 international standard. Using the MIL-
STD-883D (Method 3015) specification for Human
Body Model (HBM) ESD, all pins are protected from
contact discharges to +20kV.
There are three options for the value of the series
resistor R1: 15Ω, 22Ω, and 33Ω. This series resis-
tance, plus the USB driver output resistance, must be
close to the USB cable’s characteristic impedance of
45Ω (each side) to minimize transmission line reflec-
tions.
The PACUSB-D1/D2/D3 is manufactured in a 5-pin
SC70 or a 5-pin SOT23 package and is available with
optional lead-free finishing.
Applications
ESD protection and termination of USB
downstream ports
Desktop PCs
Notebooks
Set-top boxes
USB hubs
Electrical Schematic
1
C1
2
GND
C1
3
R1
R2
5
R2
R1
4
©
2004 California Micro Devices Corp. All rights reserved.
09/14/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
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