PACUSBVB-D1 Datasheet, PDF (7/9 Pages) California Micro Devices Corp – USB Downstream Port Terminator with VBUS ESD Protection

PACUSBVBD1/D2/D3
Application Information
The PACUSBVB-D1/D2/D3 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 15kW 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 15kV contact discharge per the IEC 61000-4-2 standard and protect the USB controller on both
data lines. The 6-lead PACUSBVB-D1/D2/D3 device provides an additional zener diode to protect the VBUS
USB power line.
The PACUSBVB-D1/D2/D3 should be placed on the PCB between the USB controller and the USB connector,
as shown on the Connection Diagram Connection Diagram for PACUSBVB-D1/D2/D3.
Figure 5.
Connection Diagram for PACUSBVB-D1/D2/D3
To guarantee the best ESD and filtering performance, it is recommended that the PACUSBVB-D1/D2/D3 be
located close to the USB connector. Also, the trace lengths between the PACUSBVB-D1/D2/D3 and the USB
controller should be kept as short as possible.
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