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PDF PACUSBVB Data sheet ( Hoja de datos )
| Número de pieza | PACUSBVB | |
| Descripción | USB Downstream Port Terminator | |
| Fabricantes | ON Semiconductor | |
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PACUSBVB
USB Downstream Port
Terminator with VBUS ESD
Protection
Product Description
The PACUSBVB−D1 is a single−channel USB downstream−port
termination network. It integrates EMI/RFI filter components R1 and
C1 as recommended by the USB specification, as well as the required
15 kW pull−down resistors (R2) to GND. In addition,
PACUSBVB−D1 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 15 kV,
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 20 kV.
The PACUSBVB−D1 also features a fifth zener diode (cathode at
pin 5) which provides ESD protection for the USB VBUS line.
There are three options for the value of the series resistor R1: 15 W,
33 W, and 22 W. This series resistance, plus the USB driver output
resistance, must be close to the USB cable’s characteristic impedance
of 45 W (each side) to minimize transmission line reflections.
The PACUSBVB−D1 is housed in a 6−pin SOT23 package and is
available with optional lead−free finishing.
Features
A Low−Capacitance USB Downstream Port Terminator, EMI
Filter, and Transient Over−Voltage Protector in a Single
Surface−Mounted Package
ESD Protection to 20 kV Contact Discharge, per
MIL−STD−883D, Method 3015
ESD Protection to 15 kV Contact Discharge, per IEC 61000−4−2
International Standard
Provides ESD Protection for the VBUS Line
Compact SOT23−6 Package Saves Board Space and Lowers
Manufacturing Costs Compared to Discrete Solutions
Capacitors Matched to a Precision Exceeding the USB
Specification
These Devices are Pb−Free and are RoHS Compliant
Applications
ESD Protection and Termination of USB Downstream Ports
Desktop PCs
Notebooks
Set−Top Boxes
USB Hubs
http://onsemi.com
1
2
GND
3
SOT23−6
CASE 527AJ
ELECTRICAL SCHEMATIC
R1
C1 R2
C1 R2
R1
MARKING DIAGRAM
6
5
VBUS
4
UD1R
UD1R = PACUSBVB−D1Y6R
ORDERING INFORMATION
Device
Package Shipping†
PACUSBVB−D1Y6R SOT23−6 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
October, 2011 − Rev. 3
1
Publication Order Number:
PACUSBVB/D
1 page  
PACUSBVB
APPLICATION INFORMATION
The PACUSBVB−D1 provides a complete interface for a single downstream USB port typically found in computers and
USB hubs. It integrates the series resistors (R1) and the 15 kW pull−down resistors (R2) for both USB data lines (D+ and D−)
as well as the capacitors to ground for EMI suppression. Zener diodes provide ESD protection up to 15 kV contact discharge
per the IEC 61000−4−2 standard and protect the USB controller on both data lines. The 6−lead PACUSBVB−D1 device
provides an additional zener diode to protect the VBUS USB power line.
The PACUSBVB−D1 should be placed on the PCB between the USB controller and the USB connector, as shown on the
Connection Diagram, Figure 3.
D+
USB
Controller
PACUSBVB−DnY6R
1
R1
C1 R2
2
C1 R2
6 D+
Downstream
USB
Connector
5 VBUS
D− 3
4 D−
R1
Figure 3. Connection Diagram for PACUSBVB−D1
To guarantee the best ESD and filtering performance, it is recommended that the PACUSBVB−D1 be located close to the
USB connector. Also, the trace lengths between the PACUSBVB−D1 and the USB controller should be kept as short as
possible.
http://onsemi.com
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet PACUSBVB.PDF ] | |
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