17
V CC GND V CMLP FWPWR_EN D2+ D2D1+ D1– Reference Generator V REF Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPD4S1394 SLVSA55B – NOVEMBER 2009 – REVISED NOVEMBER 2016 TPD4S1394 Firewire ESD Clamp With Live-Insertion Detection Circuit 1 1 Features 1IEEE 1394 Live Insertion Detection ESD Protection Exceeds IEC61000-4-2 (Level 4) ±15-kV Human-Body Model (HBM) ±6-kV IEC 61000-4-2 Contact Discharge 4-Channel Matching ESD Clamps for High-Speed Differential Lines Flow-Through, Single-in-Line Pin Mapping Simplifies Board Layout Available in an 8-Pin X2SON (DQL) package 2 Applications Firewire Interface 3 Description The TPD4S1394 provides robust system level ESD solution for the IEEE 1394 port, along with a live insertion detection mechanism for high-speed lines interfacing a low-voltage, ESD sensitive core chipset. This device protects and monitors up to two differential input pairs. The optimized line capacitance protects the data lines with data rates in excess of 1.6 GHz without degrading signal integrity. The TPD4S1394 incorporates a live insertion detection circuit whose output state changes when improper voltage levels are present on the input data lines. The FWPWR_EN signal controls an external FireWire port power switch. During the live insertion event if there is a floating GND or a high level signal at the D+ or D– pins, the internal comparator detects the changes and pull the FWPWR_EN signal to a low state. When FWPWR_EN is driven low, there is an internal delay mechanism preventing it from being driven to the high state regardless of the inputs to the comparator. Additionally, the TPD4S1394 performs ESD protection on the four inputs pins: D1+, D1–, D2+, and D2–. The TPD4S1394 conforms to the IEC61000-4-2 (Level 4) ESD protection and ±15-kV HBM ESD protection. The TPD4S1394 is characterized for operation over ambient air temperature of –40°C to 85°C. A 0.1-μF decoupling capacitor is required at VCC. Device Information (1) PART NUMBER PACKAGE BODY SIZE (NOM) TPD4S1394 X2SON (8) 2.00 mm × 1.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Functional Block Diagram

FireWire ESD Clamp with Live-Insertion Detection Circuit (Rev. B)

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VCC

GND

VCMLP FWPWR_END2+ D2– D1+ D1–

ReferenceGenerator

VREF

Copyright © 2016, Texas Instruments Incorporated

Product

Folder

Sample &Buy

Technical

Documents

Tools &

Software

Support &Community

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPD4S1394SLVSA55B –NOVEMBER 2009–REVISED NOVEMBER 2016

TPD4S1394 Firewire ESD Clamp With Live-Insertion Detection Circuit

1

1 Features1• IEEE 1394 Live Insertion Detection• ESD Protection Exceeds IEC61000-4-2 (Level 4)

– ±15-kV Human-Body Model (HBM)– ±6-kV IEC 61000-4-2 Contact Discharge

• 4-Channel Matching ESD Clamps for High-SpeedDifferential Lines

• Flow-Through, Single-in-Line Pin MappingSimplifies Board Layout

• Available in an 8-Pin X2SON (DQL) package

2 ApplicationsFirewire Interface

3 DescriptionThe TPD4S1394 provides robust system level ESDsolution for the IEEE 1394 port, along with a liveinsertion detection mechanism for high-speed linesinterfacing a low-voltage, ESD sensitive core chipset.This device protects and monitors up to twodifferential input pairs. The optimized line capacitanceprotects the data lines with data rates in excess of1.6 GHz without degrading signal integrity.

The TPD4S1394 incorporates a live insertiondetection circuit whose output state changes whenimproper voltage levels are present on the input datalines. The FWPWR_EN signal controls an externalFireWire port power switch. During the live insertionevent if there is a floating GND or a high level signalat the D+ or D– pins, the internal comparator detectsthe changes and pull the FWPWR_EN signal to a lowstate. When FWPWR_EN is driven low, there is aninternal delay mechanism preventing it from beingdriven to the high state regardless of the inputs to thecomparator.

Additionally, the TPD4S1394 performs ESDprotection on the four inputs pins: D1+, D1–, D2+,and D2–. The TPD4S1394 conforms to theIEC61000-4-2 (Level 4) ESD protection and ±15-kVHBM ESD protection. The TPD4S1394 ischaracterized for operation over ambient airtemperature of –40°C to 85°C.

A 0.1-µF decoupling capacitor is required at VCC.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)TPD4S1394 X2SON (8) 2.00 mm × 1.40 mm

(1) For all available packages, see the orderable addendum atthe end of the data sheet.

Functional Block Diagram

2

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Table of Contents1 Features .................................................................. 12 Applications ........................................................... 13 Description ............................................................. 14 Revision History..................................................... 25 Pin Configuration and Functions ......................... 36 Specifications......................................................... 3

6.1 Absolute Maximum Ratings ...................................... 36.2 ESD Ratings.............................................................. 36.3 Recommended Operating Conditions....................... 46.4 Thermal Information .................................................. 46.5 Electrical Characteristics........................................... 46.6 Switching Characteristics .......................................... 46.7 Typical Characteristics .............................................. 5

7 Detailed Description .............................................. 67.1 Overview ................................................................... 67.2 Functional Block Diagram ......................................... 6

7.3 Feature Description................................................... 67.4 Device Functional Modes.......................................... 6

8 Application and Implementation .......................... 78.1 Application Information.............................................. 78.2 Typical Application .................................................... 7

9 Power Supply Recommendations ........................ 810 Layout..................................................................... 8

10.1 Layout Guidelines ................................................... 810.2 Layout Example ...................................................... 9

11 Device and Documentation Support ................. 1011.1 Receiving Notification of Documentation Updates 1011.2 Community Resources.......................................... 1011.3 Trademarks ........................................................... 1011.4 Electrostatic Discharge Caution............................ 1011.5 Glossary ................................................................ 10

12 Mechanical, Packaging, and OrderableInformation ........................................................... 10

4 Revision HistoryNOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision A (March 2013) to Revision B Page

• Added Device Information table, Pin Configuration and Functions section, Specifications section, ESD Ratings table,Switching Characteristics table, Detailed Description section, Application and Implementation section, Power SupplyRecommendations section, Layout section, Device and Documentation Support section, and Mechanical,Packaging, and Orderable Information section ...................................................................................................................... 1

• Added Thermal Information table ........................................................................................................................................... 4

Changes from Original (November 2009) to Revision A Page

• Removed hard coded ordering information table. Information contained in Package Orderable Addendum. ....................... 1

1

2

3

4

VCC

GND

VCMLP

FWPWR_EN

D1+

D1–

D2+

D2–

8

7

6

5

3

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5 Pin Configuration and Functions

DQL Package8-Pin X2SON(Top View)

Pin FunctionsPIN

TYPE DESCRIPTIONNAME NO.D1+ 8 Input High-speed ESD clamp inputD1– 7 Input High-speed ESD clamp inputD2+ 6 Input High-speed ESD clamp inputD2– 5 Input High-speed ESD clamp inputFWPWR_EN 4 Output Control outputGND 2 Ground GroundVCC 1 Power Power supplyVCLMP 3 Output Comparator trip reference

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratingsonly, which do not imply functional operation of the device at these or any other conditions beyond those indicated under RecommendedOperating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6 Specifications

6.1 Absolute Maximum Ratingsover operating free-air temperature range (unless otherwise noted) (1)

MIN MAX UNITVCC Supply voltage –0.5 4.6 VVIO IO voltage at D+, D–, VCLMP 0 4 VFWPWR_EN Switch output –0.5 4.6 VTA Operating free-air temperature –40 85 °CTstg Storage temperature –65 150 °C

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.2 ESD RatingsVALUE UNIT

V(ESD) Electrostatic discharge

Human-body model (HBM), perANSI/ESDA/JEDEC JS-001 (1)

All pins except 5, 6, 7, and 8 ±2500

V

Pins 5, 6, 7, and 8 ±15000

Charged-device model (CDM), per JEDECspecification JESD22-C101 (2)

All pins except 5, 6, 7, and 8 ±1000Pins 5, 6, 7, and 8 ±1000

IEC 61000-4-2 contact discharge Pins 5, 6, 7, and 8 (interface side) ±6000IEC 61000-4-2 air-gap discharge Pins 5, 6, 7, and 8 (interface side) ±6000

4

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6.3 Recommended Operating Conditionsover operating free-air temperature range (unless otherwise noted)

PARAMETER MIN MAX UNITVCC Supply voltage 3 3.6 V

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics applicationreport.

6.4 Thermal Information

THERMAL METRIC (1)TPD4S1394

UNITDQL (X2SON)8 PINS

RθJA Junction-to-ambient thermal resistance 167.5 °C/WRθJC(top) Junction-to-case (top) thermal resistance 56.8 °C/WRθJB Junction-to-board thermal resistance 82.3 °C/WψJT Junction-to-top characterization parameter 1.5 °C/WψJB Junction-to-board characterization parameter 82 °C/W

(1) A 0.1-µF decoupling capacitor is required at VCC.

6.5 Electrical Characteristicsover operating free-air temperature range (unless otherwise noted) (1)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

VDXFWPWR_EN trip voltage(D+ and D– pins)

High-to-low 2.9 3.4 4V

Low-to-high 2.7 3.2 3.8VCLMP Value on pin No connection 2.45 VVBR Breakdown voltage at VCLAMP II = 1 mA 4.2 VVD Diode forward voltage for lower clamp ID = 8 mA lower clamp diode –0.6 –0.8 –0.95 VFWPWR_EN Switch output VCC VRDYN Dynamic resistance (in and out clamp) of D+, D– I = 1 A 1 Ω

CIO I/O capacitance of D+, D– VIO = 2.5 V 1.5 2 pFICC Current consumption VCC = 3.3 V, FWPWR_EN = high 130 200 µA

6.6 Switching Characteristicsover operating free-air temperature range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNITtTRIP Delay time for FWPWR_EN to go low Loading on FWPWR_EN = 50 pF 0.5 2 5 µstRESET Delay time for FWPWR_EN to go high after trip FWPWR_EN = VCC 300 450 600 ms

-18

-15

-12

-9

-6

-3

0

1.0E+07 1.0E+08 1.0E+09 1.0E+10

Frequency (Hz)

Inse

rtio

n L

oss (

dB

) -3.0 dB Frequency = 2.4 GHz

0.0

0.5

1.0

1.5

2.0

2.5

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

Voltage Bias (V)

Ca

pa

cita

nce

(p

F)

5

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6.7 Typical Characteristics

D+, D– Pins

Figure 1. I/O Capacitance vs I/O Voltage

D+, D– Pins

Figure 2. Insertion Loss (S21)

VCC

GND

VCMLP FWPWR_END2+ D2– D1+ D1–

ReferenceGenerator

VREF

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7 Detailed Description

7.1 OverviewTPD4S1394 is a FireWire interface part that complies to the IEEE 1394 standard. The device has ESD protectionfor four high-speed data lines that pass 6-kV IEC61000-4-2 standard. Each dataline's I/O capacitance associatedwith the ESD cell is minimal and supports high data rate. There is a live insertion detection circuit integrated inTPD4S1394. During the live insertion event if there is a floating GND or a high-level signal at D+ or D–, theFWPWR_EN is driven low, disabling the external FireWire power switch.

7.2 Functional Block Diagram

7.3 Feature DescriptionTPD4S1394's high-speed ESD cells on the data lines protect the pins from up to ±6-kV IEC 61000-4-2 contactdischarge. The live insertion protection circuit detects improper voltages on the data lines and turn off theFireWire port power switch during an abnormal condition.

7.4 Device Functional ModesThe TPD4S1394's D1+, D1–, D2+, and D2– pins are a passive-integrated circuit that activates when voltagesexceed the forward voltage plus VCLMP or fall below the lower diodes forward voltage (–0.6 V). VCC must bewithin recommended voltage range for live insertion detection circuit to work correctly.

FirewireConnector

PowerPower Switch

GND

FWPWR_EN

TPD1394

TPB±

TPB+

TPA±

TPA+

TPB±_SYS

TPB+_SYS

TPA±_SYS

TPA+_SYS

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8 Application and Implementation

NOTEInformation in the following applications sections is not part of the TI componentspecification, and TI does not warrant its accuracy or completeness. TI’s customers areresponsible for determining suitability of components for their purposes. Customers shouldvalidate and test their design implementation to confirm system functionality.

8.1 Application InformationTPD4S1394 has both high-speed ESD cells to protect the D1+, D1–, D2+, and D2– lines and live insertiondetection circuit to identify improper status during insertion and to control the external power switch.

8.2 Typical Application

Figure 3. Typical Application Schematic

8.2.1 Design RequirementsFor this design example, a TPD4S1394 is used to protect the FireWire connector and detect live insertion.

Table 1 shows the design parameters:

Table 1. Design ParametersPARAMETER EXAMPLE VALUE

Power supply, VCC 3.3 VData line operating frequency 400 MHz (800 Mbps)

-18

-15

-12

-9

-6

-3

0

1.0E+07 1.0E+08 1.0E+09 1.0E+10

Frequency (Hz)

Insert

ion L

oss (

dB

) -3.0 dB Frequency = 2.4 GHz

0.0

0.5

1.0

1.5

2.0

2.5

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

Voltage Bias (V)

Capacitance (

pF

)

8

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8.2.2 Detailed Design ProcedureThe data transfer rate of 800 Mbps is well below the bandwidth of the data pins of TPD4S1394. So the parasiticsassociated with the ESD cells on these lines do not degrade the signal integrity. 3.3-V power supplies arecommonly available from the board and can be used to power the live insertion detection circuit.

8.2.3 Application Curves

D+, D– Pins

Figure 4. I/O Capacitance vs I/O Voltage

D+, D– Pins

Figure 5. Insertion Loss (S21)

9 Power Supply RecommendationsTI recommends a power supply for VCC is from 3 V to 3.6 V.

10 Layout

10.1 Layout Guidelines• The optimum placement is as close to the connector as possible.

– EMI during an ESD event can couple from the trace being struck to other nearby unprotected traces,resulting in early system failures.

– The PCB designer must minimize the possibility of EMI coupling by keeping any unprotected traces awayfrom the protected traces which are between the TVS and the connector.

• Route the protected traces as straight as possible.• Eliminate any sharp corners on the protected traces between the TVS and the connector by using rounded

corners with the largest radii possible.– Electric fields tend to build up on corners, increasing EMI coupling.

1

2

3

4 5

6

7

8

Via to power ground plane Via to power supply plane

VCC

GND

VCLAMP

FWPWR_EN

D1+

D1–

D2+

D2–

9

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10.2 Layout Example

Figure 6. TPD4S1394 Layout Example

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11 Device and Documentation Support

11.1 Receiving Notification of Documentation UpdatesTo receive notification of documentation updates, navigate to the device product folder on ti.com. In the upperright corner, click on Alert me to register and receive a weekly digest of any product information that haschanged. For change details, review the revision history included in any revised document.

11.2 Community ResourcesThe following links connect to TI community resources. Linked contents are provided "AS IS" by the respectivecontributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms ofUse.

TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaborationamong engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and helpsolve problems with fellow engineers.

Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools andcontact information for technical support.

11.3 TrademarksE2E is a trademark of Texas Instruments.All other trademarks are the property of their respective owners.

11.4 Electrostatic Discharge CautionThis integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled withappropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be moresusceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

11.5 GlossarySLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.

12 Mechanical, Packaging, and Orderable InformationThe following pages include mechanical, packaging, and orderable information. This information is the mostcurrent data available for the designated devices. This data is subject to change without notice and revision ofthis document. For browser-based versions of this data sheet, refer to the left-hand navigation.

PACKAGE OPTION ADDENDUM

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Addendum-Page 1

PACKAGING INFORMATION

Orderable Device Status(1)

Package Type PackageDrawing

Pins PackageQty

Eco Plan(2)

Lead/Ball Finish(6)

MSL Peak Temp(3)

Op Temp (°C) Device Marking(4/5)

Samples

TPD4S1394DQLR ACTIVE X2SON DQL 8 3000 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM -40 to 85 (5J7 ~ 5JR)

(1) The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.

(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availabilityinformation and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement thatlead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used betweenthe die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weightin homogeneous material)

(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuationof the previous line and the two combined represent the entire Device Marking for that device.

(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finishvalue exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on informationprovided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken andcontinues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

PACKAGE OPTION ADDENDUM

www.ti.com 2-Mar-2016

Addendum-Page 2

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device PackageType

PackageDrawing

Pins SPQ ReelDiameter

(mm)

ReelWidth

W1 (mm)

A0(mm)

B0(mm)

K0(mm)

P1(mm)

W(mm)

Pin1Quadrant

TPD4S1394DQLR X2SON DQL 8 3000 180.0 9.5 1.6 2.3 0.5 4.0 8.0 Q1

PACKAGE MATERIALS INFORMATION

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Pack Materials-Page 1

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

TPD4S1394DQLR X2SON DQL 8 3000 184.0 184.0 19.0

PACKAGE MATERIALS INFORMATION

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Pack Materials-Page 2

IMPORTANT NOTICE

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