pacusb-u2 California Micro Devices Corporation, pacusb-u2 Datasheet

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pacusb-u2

Manufacturer Part Number
pacusb-u2
Description
Upstream Usb Port Terminator
Manufacturer
California Micro Devices Corporation
Datasheet

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Features
Applications
© 2006 California Micro Devices Corp. All rights reserved.
05/01/06
Electrical Schematic
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
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
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
D1_i
D2_i
GND
GND
IN1
IN2
Upstream USB Port Terminator
1
2
3
C1
C1
R1
R1
SC70 6
Tel: 408.263.3214
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
There are three options for the value of the series
resistor R1:
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.
For PACUSB-U1, R1=15Ω
For PACUSB-U2, R1=33Ω
For PACUSB-U3, R1=22Ω
R2
3.3
(R2).
6
4
5
Fax: 408.263.7846
OUT 1
OUT 2
D1_c
Vcc
D2_c
V
3.3
PACUSB-U1/U2/U3
i = input
c = connector
www.cmd.com
1

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pacusb-u2 Summary of contents

Page 1

... California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 05/01/06 Upstream USB Port Terminator 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 ...

Page 2

... PACUSB-U2Y6 UU2Y PACUSB-U3 UU3 PACUSB-U3Y6 UU3Y Tel: 408.263.3214 ● PACUSB-U1/U2/ D1_c 3 D2_c 6-pin SOT23 Lead-free Finish Ordering Part 1 Number Part Marking PACUSB-U1R PACUSB-U1Y6R U1YR PACUSB-U2R PACUSB-U2Y6R U2YR PACUSB-U3R PACUSB-U3Y6R U3YR Fax: 408.263.7846 www.cmd.com ● ● U1R U2R U3R 05/01/06 ...

Page 3

... PARAMETER V (Supply Voltage) 3.3 Ambient Operating Temperature © 2006 California Micro Devices Corp. All rights reserved. 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 05/01/06 ABSOLUTE MAXIMUM RATINGS STANDARD OPERATING CONDITIONS Tel: 408.263.3214 ● PACUSB-U1/U2/U3 RATING 5.5 -40 to +85 -65 to +150 100 200 RATING 3.3 -40 to +85 Fax: 408.263.7846 www.cmd.com ● ...

Page 4

... Specifications (con’t) ELECTRICAL OPERATING CHARACTERISTICS SYMBOL PARAMETER R1 Resistance R1 (PACUSB-U1 only) R1 Resistance R1 (PACUSB-U2 only) R1 Resistance R1 (PACUSB-U3 only) R2 Resistance R2 C1 Capacitance C1 I Diode Leakage Current to GND LEAK V Diode Reverse-biased Stand-off D1 Voltage V Signal Clamp Voltage D2 Positive Clamp Negative Clamp V In-system ESD Withstand Voltage ...

Page 5

... Application Information The PACUSB-U1/U2/U3 is targeted for upstream USB ports (peripherals). It provides series termination, EMI filtering, and ESD protection for the two USB data lines D+ and D-. The USB Specification revision 1.1 provides for two data rates: • The Full Speed signaling bit rate at 12 Mbits per second, and • ...

Page 6

... Mechanical Details PACUSB-U1/U2/U3 devices are available in 6-pin SC70 and 6-pin SOT23 packages. SC70 Mechanical Specifications Dimensions for the PACUSB-U1/U2/U3 supplied in a SC70-6 package are presented below. For complete information on the SC70, see the Califor- nia Micro Devices SC70 Package Information docu- ment ...

Page 7

... Mechanical Details (continued) SOT23 Mechanical Specifications Dimensions for the PACUSB-U1/U2/U3 supplied in a SOT23-6 package are presented below. For complete information on the SOT23 , see the Cali- fornia Micro Devices SOT23 Package Information doc- ument. PACKAGE DIMENSIONS Package MO-178 Pins Millimeters Dimensions Min ...

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