Datasheet ITA25C1, ITA18C1, ITA10C1, ITA6V5C1 Datasheet (SGS Thomson Microelectronics)

ITA6V5C1 / ITA10C1

ITA18C1 / ITA25C1

MONOLITHICTRANSIL ARRAYFOR DATALINE PROTECTION

FEATURES

HIGH SURGE CAPABILITY TRANSIL ARRAY
I

=40A 8/20µs

PP

UP TO 5 BIDIRECTIONAL TRANSIL FUNC­TIONS

BREAKDOWNVOLTAGEANDMAXIMUMDIF­FERENTIAL VOLTAGE BETWEEN TWO
INPUTPINS:
ITA6V5= 6.5V
ITA10= 10 V
ITA18= 18 V
ITA25= 25 V

LOWCLAMPINGFACTOR(V
CURRENT LEVEL

LOW LEAKAGECURRENT
LOW INPUTCAPACITANCE

CL/VBR

)AT HIGH

SO8

DESCRIPTION

Thisis a specifictransil arrayforRS232,RS423 in­terface protection developed in monolithic chip
forminordertoprovide a high surge capabilityand
a low clamping voltage

IN ACCORDANCE WITH :

- ESD standard:
. IEC801-2 15kV 5ns/ 50ns
. IEC801-4 40A 5ns/ 50ns
. IEC801-5 1kV 1.2 / 50µs

25A 8 / 20µs

. MIL STD 883C - Method3015-2

V

= 25kV

P

C = 150pF
R = 150Ω
5 s duration

- Human body test :
= 4kV

V

P

C= 150pF
R= 150Ω

FUNCTIONAL DIAGRAM

I/01 1

I/02 2

I/03 3

I/04 4

EQUIVALENTTO 4 BIDIRECTIONAL TRANSILS

GND

8

7

6

5 GND

April 1998 - Ed: 3

1/5

ITA6V5C1/ITA10C1 / ITA18C1 / ITA25C1

ABSOLUTE RATINGS(limiting values)(0°C ≤ Tamb≤ 70°C)

Symbol Parameter Value Unit

I

PP

Peak pulsecurrentfor 8/20µsexponential
pulse

2

I

t Wire I2t value Seenote 0.6 A2s

T

stg

T

j

Storageand JunctionTemperatureRange - 55to + 150

Seenote 40 A

125

°C
°C

Note :

For surgesgreater than the maximum value specified, the
input/output will present first a short circuit to the common
bus line and after an open circuit causedby the wire.

ELECTRICAL CHARACTERISTICS

Symbol Parameter

I

RM

V

RM

V

BR

V

CL

I

PP

LeakageCurrent@ V
Stand-offVoltage
BreakdownVoltage
ClampingVoltage
SurgeCurrent

RM

C InputCapacitance

100

%I

pp

8s

Pulse wave form8/20 s

50

0

20 s

I

I

PP

I

R

I

RM

V

V

RM

BR

t

V

V

CL

I

Types

@VRMV

RM

max min 8/20µs max 8/20µs max max max

Note 1 Note 1 Note 1 Note 2 Note 3

µA V V mA V A V A pF pF 10

@IRVCL@I

BR

PP

V

CL

I

PP

C1 C2

ITA6V5C1 10 5 6.5 1 10 10 12 25 750 550 4

ITA10C1 10 8 10 1 15 10 19 25 570 260 8
ITA18C1 4 15 18 1 25 10 28 25 350 180 9
ITA25C1 4 24 25 1 33 10 38 25 300 100 12

Allparameterstested at 25°C, exceptwhereindicated.

Note 1: BetweenI/O pin and ground.
Note 2: BetweentwoinputPins at 0 VBias.
Note 3:

2/5

Betweentwo inputPinsatV

RM

.

α

T

-4

/°C

ITA6V5C1 / ITA10C1 / ITA18C1 / ITA25C1

Fig.1:

TypicalPeak pulse power versusexponen-

tialpulseduration.

P (W)

1E+04

1E+03

1E+02

1E+01

P

T initial = 25 C

j

ITA25C1
ITA18C1
ITA10C1
ITA6V5C1

t (ms) expo

P

1E-03 1E-02 1E-01 1E+00 1E+01 1E+02

o

Fig.3: PeakcurrentIDCinducingopencircuitof the

wire for one input/output versus pulse duration
(typicalvalues).

I (A)

1E+03

1E+02

DC

exponential waveform

Fig.2 :

Clamping voltage versus peak pulse cur-

rent exponentialwaveform 8/20µs.

V (V)

1E+03

1E+02

1E+01

1E+00

CL

T initial = 25 C

j

ITA25C1
ITA18C1
ITA10C1
ITA6V5C1

1E-01 1E+00 1E+01 1E+02

o

100

50

%I

0

PP

t=8 s

r

tt

r

I (A)

t

PP

Fig.4 : Junction capacitance versus reverse ap-

pliedvoltageforone input/output(typicalvalues).

C (pF)

1E+03

T = 25 C

ITA6V5C1

ITA10C1

o

j

f=1MHz

1E+01

1E+00

1E-02 1E-01 1E+00 1E+01

t (ms)

1E+02

1E+00 1E+01 1E+02

Note :

The curve of the figure 2 is specified for a junction temperature of 25°C before surge.

ITA18C1

ITA25C1

V (V)

R

3/5

ITA6V5C1/ITA10C1 / ITA18C1 / ITA25C1

APPLICATION NOTICE

Types Maximumdifferentialvoltagebetweentwoinputpinsat 25°C

V

ITA6V5C1
ITA10C1
ITA18C1
ITA25C1

6.5
10
18
25

INSTRUCTIONGUIDE

This monolithicTransilArrayis basedon 6 UnidirectionalTransilswitha commoncathodeandcanbecon­figuratedtooffer4 or5 bidirectionalfunctions,accordingto the followingcustomerapplication.

UTILIZATION AS A BIDIRECTIONAL TRANSIL

Fig 5 : EQUIVALENTTO 4 BIDIRECTIONAL TRANSILS

ARRAYWITH4I/Os.
Themainapplicationof thisdeviceis to beconfigu­rated as a 4, bidirectionalTransil Array as per the

T1

I/O1 1

T2

8 GND

Pin-outof Fig 5.
Pins5 and 8 are connectedto ground.
INPUTS/OUTPUTSarefromPin 1 to Pin4.

I/O2 2

7

Note: Thebidirectionalfunctionis madewith2 uni­directional Transils. One (T1) is connected to the

I/O3 3

I/O4

6

T3

4

5

GND

INPUT/OUTPUT, the other one (T2) is connected
to theground(seeFig 5).
Groundis connectedvia2diodesT2 and T3 .
Thisallows to withstand2 specifiedsurgeson2dif­ferentlinesat thesame time.

Fig 6 : EQUIVALENTTO 5 BIDIRECTIONAL TRANSILS

I/O1 1

I/O2 2

I/O3

I/O4

4/5

T1

3

4

T2

GND

8

7

6

5 I/O5

UTILIZATION AS A BIDIRECTIONAL TRANSIL
ARRAYWITH5I/Os.
The ITAxxC1 can be used as a 5 bidirectional
TransilArray.
Groundcanbeconnectedto any pin (except6and

7).
The other pins are used as INPUTS and OUT­PUTS.
The bidirectional function is made with 2 unidirec­tional Transils T1 and T2. One example with
groundon Pin 8 is shownin Fig 6.
This configuration allows to withstand only one
specifiedsurgeatthesametime.

ORDERCODE

ITA6V5C1 / ITA10C1 / ITA18C1 / ITA25C1

ITA 25 C 1

INTEGRATED
TRANSILARRAY

V

min

BR

1=SO8PLASTIC

COMMONGROUND

MARKING

PACKAGE

TYPE

ITA6V5C1 ITA10C1 ITA18C1 ITA25C1

MARKING 6V5C1 10C1 18C1 25C1

PACKAGEMECHANICAL DATA

SO8

DIMENSIONS

REF.

Millimetres Inches

Min. Typ. Max. Min. Typ. Max.

A 1.75 0.069
a1 0.1 0.25 0.004 0.010
a2 1.65 0.065

b 0.35 0.48 0.014 0.019
b1 0.19 0.25 0.007 0.010

C 0.50 0.020

c1 45°(typ)

D 4.8 5.0 0.189 0.197
E 5.8 6.2 0.228 0.244

e 1.27 0.050
e3 3.81 0.150

F 3.8 4.0 0.15 0.157

Weight: 0.077g

L 0.4 1.27 0.016 0.050

M 0.6 0.024

S8°(max)

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringementof patents or other rights of third parties which may result from its use. No
license is granted by implicationor otherwise under anypatent or patentrightsof SGS-THOMSON Microelectronics. Specificationsmentioned
in thispublicationare subject to changewithout notice. This publicationsupersedes and replaces all informationpreviously supplied.
SGS-THOMSON Microelectronics productsare notauthorizedfor use ascritical components inlife supportdevices or systemswithout express
written approval ofSGS-THOMSON Microelectronics.

 1998 SGS-THOMSON Microelectronics - Printed in Italy - All rights reserved.

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