1

2

3

4

V

CC

GND

V

CMLP

FWPWR_EN

D1+

D1

–

D2+

D2

–

8

7

6

5

TPD4S1394

www.ti.com

SLVSA55A – NOVEMBER 2009 – REVISED MARCH 2013

FIREWIRE ESD CLAMP WITH LIVE-INSERTION DETECTION CIRCUIT

Check for Samples: TPD4S1394

1

FEATURES

DESCRIPTION

The TPD4S1394 provides robust system level ESD

•

IEEE1394 Live Insertion Protection

solution for the IEEE.1394 port along with a live

•

Exceeds ESD protection to IEC61000-4- 2

insertion detection mechanism for high-speed lines

(Level 4)

interfacing a low-voltage, ESD sensitive core chipset.

–

±15-kV Human-Body Model (HBM)

This

device

protects

and

monitors

up

to

two

differential input pairs. The optimized line capacitance

–

±6-kV IEC 61000-4-2 Contact Discharge

allows to protect the data lines with data rate in

•

4-Channel Matching ESD Clamps for High-

excess of 1.6 GHz without degrading signal integrity.

Speed Differential Lines

The TPD4S1394 incorporates a live insertion circuit

•

Flow-Through, Single-in-Line Pin Mapping

whose output state changes when improper voltage

Simplifies Board Layout

levels are present on the input data lines. The

•

Available in an 8-Pin X2SON (DQL) package

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+, D–

APPLICATIONS

pins, the internal comparator will detect the changes

•

IEEE 1394 Live Insertion Protection

and pull the FWPWR_EN signal to low state. When

FWPWR_EN is driven low, there is an internal delay

DQL PACKAGE

mechanism preventing it from being driven to the high

(TOP VIEW)

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)

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 © 2009–2013, 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.