1

2

3

4

V

CC

GND

V

CMLP

FWPWR_EN

D1+

D1

–

D2+

D2

–

8

7

6

5

TPD4S1394

www.ti.com

SLVSA55 – NOVEMBER 2009

FIREWIRE ESD CLAMP WITH LIVE-INSERTION DETECTION CIRCUIT

Check for Samples: TPD4S1394

1

FEATURES

DESCRIPTION

•

IEEE1394 Live Insertion Protection

•

Exceeds ESD protection to IEC61000-4- 2

The TPD4S1394 provides robust system level ESD

solution for the IEEE.1394 port along with a live

(Level 4)

insertion detection mechanism for high-speed lines

–

±15-kV Human-Body Model (HBM)

interfacing a low-voltage, ESD sensitive core chipset.

–

±6-kV IEC 61000-4-2 Contact Discharge

This

device

protects

and

monitors

up

to

two

•

4-Channel Matching ESD Clamps for

differential input pairs. The optimized line capacitance

allows to protect the data lines with data rate in

High-Speed Differential Lines

excess of 1.6 GHz without degrading signal integrity.

•

Flow-Through, Single-in-Line Pin Mapping

Simplifies Board Layout

The TPD4S1394 incorporates a live insertion circuit

whose output state changes when improper voltage

•

Available in an 8-Pin X2SON (DQL) package

levels are present on the input data lines. The

FWPWR_EN signal controls an external FireWire port

APPLICATIONS

power switch. During the live insertion event if there

•

IEEE 1394 Live Insertion Protection

is a floating GND or a high level signal at the D+, D–

pins, the internal comparator will detect the changes

DQL PACKAGE

and pull the FWPWR_EN signal to low state. When

(TOP VIEW)

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 0.1uF decoupling capacitor is required at VCC

(pin1)

ORDERING INFORMATION

ORDERABLE

TOP-SIDE

NOMINAL DIMENSIONS (mm)

PART NUMBER

MARKING

–40°C to 85°C

SON – DQL

Reel of 3000

W = 1.4, L = 2.0, H = 0.4, Pitch = 0.5

TPD4S1394DQLR

5JR

(1)

(2)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.