PACUSB-D1 Datasheet, PDF (1/10 Pages) California Micro Devices Corp – USB Downstream Port Terminator

USB Downstream Port Terminator
PACUSB-D1/D2/D3
Features
• A low-capacitance USB downstream port
terminator, EMI filter, and transient over-voltage
(ESD) 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
• Compact SOT23-5 and SC70-5 package options
save board space and lower manufacturing costs
compared to discrete solutions
• Capacitors matched to a precision exceeding the
USB specification
• Pin-compatible with ST Microelectronics
USBDFxxW5 USB Downstream Port Terminator
• Lead-free versions available
Applications
• ESD protection and termination of USB
downstream ports
• Desktop PCs
• Notebooks
• Set-top boxes
• USB hubs
Product Description
The PACUSB-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, PACUSB-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.
There are three options for the value of the series
resistor R1: 15Ω, 22Ω, and 33Ω. This series
resistance, plus the USB driver output resistance,
must be close to the USB cable’s characteristic
impedance of 45Ω (each side) to minimize
transmission line reflections.
The PACUSB-D1/D2/D3 is manufactured in a 5-pin
SC70 or a 5-pin SOT23 package and is available with
optional lead-free finishing..
©2010 SCILLC. All rights reserved.
June 2010 – Rev. 2
Publication Order Number:
PACUSB-D1/D2/D3/D