STF202-22 Semtech, STF202-22 Datasheet

STF202-22

Manufacturer Part Number

STF202-22

Description

Manufacturer

Semtech

Datasheet

1.STF202-22.pdf (7 pages)

Specifications of STF202-22

Mounting Style

Surface Mount

Termination

Gull Wing

Operating Temp Range

-40C to 125C

Product Height (mm)

1.45mm

Product Depth (mm)

2.8mm

Product Length (mm)

3mm

Lead Free Status / RoHS Status

Not Compliant

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Current page: 1 of 7
Download datasheet (177Kb)

The STF202 is a combination EMI filter and line termi-

nation device with integrated TVS diodes for use on

upstream USB ports. It is constructed using a propri-

etary technology that allows passive components and

TVS diodes to be integrated in the same package.

Each device will provide termination, filtering, and ESD

protection for one upstream USB port. The STF202 is

an easily implemented solution for meeting the require-

ments of revision 1.1 of the Universal Serial Bus

specification.

USB line termination is achieved with series 22

resistors preserve signal integrity by matching the cable

impedance to that of the differential driver. The 1.5k

pull-up resistor completes the termination circuit on

each line. This resistor is required by the USB specifi-

cation to identify the equipment as either a full-speed

(connected to D+ line) or low-speed (connected to D-

line) device. The 47pF capacitors are used to bypass

high frequency energy to ground and for edge rate

control of the USB signals. Finally, the STF202 con-

tains TVS diodes for ESD protection of both

(D+ and D-) data lines and the voltage bus (V

TVS diodes provide effective suppression of ESD

voltages in excess of ±15kV (air discharge) and ±8kV

(contact discharge) per IEC 61000-4-2, level 4.

The small size and integrated feature of the STF202

minimizes required board space and increases system

reliability. The STF202 is suitable for use in USB hubs,

computers, peripherals, and portable devices.

Revision 08/11/04

PROTECTION PRODUCTS

Description

Circuit Diagram

resistors on both the D+ and D- USB lines. These

BUS

). The

For EMI Filtering and ESD Protection

Features

Mechanical Characteristics

Applications

USB Upstream Port Filter and TVS

Schematic and PIN Configuration

Bidirectional EMI/RFI filtering and line termination

with integrated ESD protection

ESD protection for USB power (V

(D+ and D-) to

IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)

IEC 61000-4-4 (EFT) 40A (5/50ns)

Filtering and termination for two USB data lines

Different series resistors for impedance matching

Low TVS operating voltage (5.25V)

Low leakage current

Low capacitance

Solid-state technology

EIAJ SOT23 6L package

Molding compound flammability rating: UL 94V-0

Marking : Marking Code

Packaging : Tape and Reel per EIA 481

USB Hubs

Portable electronics

Cellular Handsets

Modems

Peripherals

Servers, Desktop, Notebook, and Handheld

Computers

STF202-22 and STF202-30

S0T23-6L (Top View)

BUS

) and data lines

www.semtech.com

Related parts for STF202-22

STF202-22 Summary of contents

Page 1

... The STF202 is suitable for use in USB hubs, computers, peripherals, and portable devices. Circuit Diagram . Revision 08/11/04 STF202-22 and STF202-30 USB Upstream Port Filter and TVS For EMI Filtering and ESD Protection Features Bidirectional EMI/RFI filtering and line termination with integrated ESD protection ...

Page 2

... PROTECTION PRODUCTS PROTECTION PRODUCTS Absolute Maximum Rating Electrical Characteristics 2004 Semtech Corp. STF202-22 and STF202- ° ° www.semtech.com ° C ° C ° µ A µ ...

Page 3

... PROTECTION PRODUCTS PROTECTION PRODUCTS Typical Characteristics ESD Clamping (8kV Contact) Typical Insertion Loss 0 dB -10 dB -20 dB 0.030MHz 2004 Semtech Corp. STF202-22 and STF202-30 ESD Clamping (15kV Air) Analog Crosstalk ( -20 dB -60 dB 2.0GHz 0.030 MHz 3 1 GHz www.semtech.com ...

Page 4

... D-) data lines and the voltage bus ( power distribution switch and BUS voltage regulator provide the power management functions of the port. 2004 Semtech Corp. STF202-22 and STF202-30 Figure 1 - STF202 Circuit Diagram . ). The BUS Figure 2 - STF202 Connection Diagram (Full Speed Devices) ) ...

Page 5

... PROTECTION PRODUCTS PROTECTION PRODUCTS Applications Information 2004 Semtech Corp. STF202-22 and STF202-30 Figure 3 - USB Port Components Figure 4 - Typical USB Hub Design 5 www.semtech.com ...

Page 6

... DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern -SOT23 6L X (C) P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2004 Semtech Corp. STF202-22 and STF202- GAGE PLANE 0.25 L (L1) A DETAIL ...

Page 7

... PROTECTION PRODUCTS PROTECTION PRODUCTS Marking Codes Ordering Information Contact Information Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp. STF202-22 and STF202- Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 7 www.semtech.com ...

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