PACUSBVB-D1 Datasheet, PDF (1/9 Pages) California Micro Devices Corp – USB Downstream Port Terminator with VBUS ESD Protection

USB Downstream Port Terminator
with VBUS ESD Protection
PACUSBVB-D1/D2/D3
Features
• A low-capacitance USB downstream port
terminator, EMI filter, and transient over-voltage
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
• 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
• Lead-free versions available
Applications
• ESD protection and termination of USB
downstream ports
• Desktop PCs
• Notebooks
• Set-top boxes
• USB hubs
Product Description
The PACUSBVB-D1/D2/D3 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 15kW pull-down resistors (R2) to GND.
In addition, PACUSBVB-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.
The PACUSBVB-D1/D2/D3 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: 15Ω, 33Ω, and 22Ω. This series
resistance, plus the USB driver output resistance,
must be close to the USB cable’s characteristic
impedance of 45W (each side) to minimize
transmission line reflections.
The PACUSBVB-D1/D2/D3 is housed in a 6-pin
SOT23 package and is available with optional lead-
free finishing.
©2010 SCILLC. All rights reserved.
June 2010 – Rev. 2
Publication Order Number:
PACUSBVBD1/D2/D3/D