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PACUSB-U1R

Description
usb interface integrated circuit usb terminator emi filter with esd
Categorysemiconductor    Other integrated circuit (IC)   
File Size120KB,7 Pages
ManufacturerAll Sensors
Environmental Compliance
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PACUSB-U1R Overview

usb interface integrated circuit usb terminator emi filter with esd

PACUSB-U1R Parametric

Parameter NameAttribute value
MakerAll Sensors
Product CategoryUSB interface integrated circuit
RoHSyes
EncapsulationReel
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
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 1.5kΩ pull-up
resistor to V
3.3
(R2).
There are three options for the value of the series
resistor R1:
• For PACUSB-U1, R1=15Ω
• For PACUSB-U2, R1=33Ω
• For PACUSB-U3, R1=22Ω
This series resistance plus the USB driver output resis-
tance must be close to the USB cable’s characteristic
impedance of 45Ω (90Ω 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.
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
Electrical Schematic
1
D1_i
IN1
R1
C1
R2
6
D1_c
OUT 1
i = input
c = connector
5
V
3.3
Vcc
GND
GND
2
C1
3
R1
SC70 6
© 2006 California Micro Devices Corp. All rights reserved.
05/01/06
D2_i
IN2
4
D2_c
OUT 2
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
1

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Description usb interface integrated circuit usb terminator emi filter with esd usb interface integrated circuit usb upstrm terminat emi filter with esd
Maker All Sensors All Sensors
Product Category USB interface integrated circuit USB interface integrated circuit
RoHS yes yes
Encapsulation Reel Reel
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