Datasheet > USBDFXXW5

USBDFXXW5

更新时间： 2024-01-14 05:24:56

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		LTE
页数	文件大小	规格书
9页	106K
描述
EMI FILTER AND LINE TERMINATION FOR USB DOWNSTREAM PORTS

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USBDFXXW5 数据手册

USBDFxxW5

EMI FILTER AND LINE TERMINATION

FOR USB DOWNSTREAM PORTS

A.S.D.

APPLICATIONS

EMI Filter and line termination for USB down-

stream ports on:

- Desktop computer

- Notebooks

- Workstations

- USB Hubs

FEATURES

Monolithic device with recommended line termi-

nation for USB downstream ports

Integrated Rt series termination and Ct bypass-

ing capacitors.

Integrated ESD protection

Small package size

SOT323-5L

DESCRIPTION

The USB specification requires USB

downstream ports to be terminated with

pull-down resistors from the D+ and D- lines to

ground. 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.

FUNCTIONAL DIAGRAM

D+ Out

D+ In

Gnd

The USBDFxxW5 provides the recommended line

termination while implementing a low pass filter to

limit EMI levels and providing ESD protection

which exceeds IEC 61000-4-2 level 4 standard.

The device is packaged in a SOT323-5L which is

the smallest available lead frame package (50%

smaller than the standard SOT23).

D- In

D- Out

BENEFITS

EMI / RFI noise suppression

Required line termination for USB downstream

ports

ESD protection exceeding IEC61000-4-2 level 4

High flexibility in the design of high density

boards

47pF

Code 01

33Ω

15Ω

15kΩ

±10%

Tailored to meet USB 1.1 standard

Code 02

47pF

Tolerance

±10%

±20%

TM: ASD and TRANSIL are a trademarks of STMicroelectronics.

May 2000 Ed : 1C

1/9

12 3 4 5 6 7...9

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