USBUF01P6 datasheet(1/7 Pages) STMICROELECTRONICS

Il numero della parte	USBUF01P6

Spiegazioni elettronici	EMI FILTER AND LINE TERMINATION FOR USB UPSTREAM PORTS

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USBUF01P6

EMI FILTER AND LINE TERMINATION

FOR USB UPSTREAM PORTS

REV. 2

SOT-666IP

(Internal Pad)

May 2004

APPLICATIONS

EMI Filter and line termination for USB upstream

ports on:

■ USB Hubs

■ PC peripherals

FEATURES

■ Monolithic device with recommended line

termination for USB upstream ports

■ Integrated Rt series termination and Ct

bypassing capacitors.

■ Integrated ESD protection

■ Small package size

DESCRIPTION

The USB specification requires upstream ports to

be terminated with pull-up resistors from the D+

and D- lines to Vbus. On the implementation of

USB systems, the radiated and conducted EMI

should be kept within the required levels as stated

by the FCC regulations. In addition to the

requirements

of

termination

and

EMC

compatibility, the computing devices are required

to be tested for ESD susceptibility.

The USBUF01P6 provides the recommended line

termination while implementing a low pass filter to

limit EMI levels and providing ESD protection

which exceeds IEC61000-4-2 level 4 standard.

The device is packaged in a SOT-666 which is the

smallest available lead frame package (45%

smaller than the standard SOT323).

BENEFITS

■ EMI / RFI noise suppression

■ Required line termination for USB upstream

ports

■ ESD protection exceeding IEC61000-4-2 level 4

■ High flexibility in the design of high density

boards

■ Tailored to meet USB 2.0 standard (low speed

and high speed data transmission)

Order Codes

Part Number

Marking

USBUF01P6

U

IPAD™

FUNCTIONAL DIAGRAM

3.3 V

Rp

Ct

Rt

Ct

Rt

D1

Grd

D2

D4

D3

3.3 V

COMPLIES WITH THE FOLLOWING STANDARDS:

■ IEC61000-4-2 level4:

15kV

(air discharge)

8kV

(contact discharge)

■ MIL STD 883E-Method 3015-7:

Class 3 C = 100 pF R = 1500

Ω

3 positive strikes and 3 negative strikes (F = 1 Hz)

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