PACUSBU-S Datasheet, PDF (1/6 Pages) ON Semiconductor – Upstream USB Port Terminator

PACUSBU-S
Upstream USB Port
Terminator
Product Description
The PACUSB−U1, PACUSB−U2, and PACUSB−U3 are
single−channel USB upstream−port termination networks.
The PACUSB−U1/U2/U3 integrate EMI/RFI filter components R1
and C1, as recommended by the USB specification. Because these are
upstream USB devices, they are terminated with a single 1.5 kW
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 W
 For PACUSB−U2, R1 = 33 W
 For PACUSB−U3, R1 = 22 W
This series resistance plus the USB driver output resistance must be
close to the USB cable’s characteristic impedance of 45 W (90 W
balanced) to minimize transmission line reflections.
In addition, these parts provide a very high level of protection for
sensitive electronic components that may be subjected to electrostatic
discharge (ESD). The input and output pins are designed and
characterized to dissipate ESD strikes of 15 kV safely, a level well
beyond the maximum requirements of free finishing.
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 30 kV Contact Discharge per
MIL−STD−883D, Method 3015
 ESD Protection to 15 kV Contact Discharge per IEC 61000−4−2
International Standard
 These Devices are Pb−Free and are RoHS Compliant
Applications
 ESD Protection and Termination of USB Port
 All USB Peripherals (PC Printers, Scanners, Zip Drives, etc.)
 PDAs/Handheld PCs
 Digital Cameras
 Wireless Handsets
 MP3 Players
 Cable Modems
http://onsemi.com
SOT23−6
CASE 527AJ
SC70−6
CASE 419AD
ELECTRICAL SCHEMATIC
1
R1
D1_i
6
D1_c
C1
2
GND
R2
5
V_3.3
3
D2_i
C1
R1
i = input; c = connector
4
D2_c
MARKING DIAGRAM
UxYR
UxR
UxYR
UxR
x
= Specific Device Code
= Specific Device Code
= 1, 2, 3
ORDERING INFORMATION
Device
Package
Shipping^†
PACUSB−U2Y6R SOT23−6 3000/Tape & Reel
(Pb−Free)
PACUSB−U3Y6R SOT23−6 3000/Tape & Reel
(Pb−Free)
PACUSB−U1R SC70−6 3000/Tape & Reel
(Pb−Free)
PACUSB−U2R
PACUSB−U3R
SC70−6 3000/Tape & Reel
(Pb−Free)
SC70−6 3000/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
 Semiconductor Components Industries, LLC, 2011
1
October, 2011 − Rev. 3
Publication Order Number:
PACUSBU−S/D