Datasheet UBA2000T-N2 Datasheet (Philips)

DATA SH EET

Product specification
File under Integrated Circuits, IC11

1996 Jan 03

INTEGRATED CIRCUITS

UBA2000T

Electronic TL-lamp starter

1996 Jan 03 2

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

FEATURES

• Electronic starter, fully compatible with conventional
glow-switch starters

• Reliable and instant ignition

• Accurate defined preheat time derived from the mains

frequency

• Increased starter life since no mechanical parts are
used

• No radio-interference (according to

“IEC926 10.5”

)

• Automatic reset after interruption of supply voltage

• Large operating temperature range: −40 to +85 °C

• Maximum current protection of the preheat current

• Ignition shut-off at end of lamp life; no overheating of

load.

GENERAL DESCRIPTION

The UBA2000T is an integrated circuit for electronic
TL-lamp starters and is fully compatible with conventional
glow switch starters. The circuit controls the preheating
and ignition of the lamp. The preheat time is well defined
without spread, since it is derived from the mains
frequency. When the lamp fails, ignition is shut-off after 7
ignition attempts. The circuit has an automatic reset when
the supply voltage is interrupted.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

UBA2000T SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1

1996 Jan 03 3

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

BLOCK DIAGRAM

Fig.1 Block diagram.

handbook, full pagewidth

MGE002

1 kΩ

IC-SUPPLY

TIME

SELECT

EDGE

DETECTOR

CURRENT

DETECTOR

CURRENT

PROTECTION

OUTPUT

DRIVER

LATCH

DECODER 1 DECODER 2

NUMBER

OF STARTS

COUNTER

V

ign

V

sense

R

sense

TEST

GND

V

CC(rst)

V

out

V

CC

V

supply

V

in

COUNTER

4

3

8

2

1

6

RES

THS

UBA2000T

VOLTAGE

DETECTORS

1996 Jan 03 4

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

PINNING

SYMBOL PIN DESCRIPTION

V

sense

1 sense voltage
GND 2 ground (0 V)
V

out

3 output voltage
V

in

4 input voltage
n.c. 5 not connected
V

CC

6 supply voltage
n.c. 7 not connected
TEST 8 test pin

Fig.2 Pin configuration.

handbook, halfpage

1
2
3
4

8
7
6
5

MGE001

UBA2000T

TEST
n.c.GND
V

CC

n.c.

V

in

V

out

V

sense

FUNCTIONAL DESCRIPTION

The UBA2000T is an Integrated Circuit that performs all
functions necessary to ignite a TL-lamp. The circuit is
connected to the lamp circuit according to Figs. 7 or 8.
The mains voltage is rectified and divided over resistors
R1 and R2 to a lower level. When the mains power is
switched on, the buffer capacitor C1 is charged through
the resistive divider and internal switch S1. As long as the
supply voltage at the buffer capacitor (VCC, see
“Characteristics”) is below the reset level (V

CC(rst)

),

the UBA2000T initializes its internal circuitry.
When V

CC

has reached the start level (V

CC(sl)

) and the

peak value of Vin>V

ign

(indicating that the mains supply is
near its peak value), the external switching device TH1 will
be turned on. This results in a current through the
electrodes of the TL-lamp, the switching device and an
integrated sense resistor. Because the current starts to
flow when the mains voltage is near its peak value,
transient currents are limited.

When the switching device is turned on, the circuit draws
its supply current from buffer capacitor C1. A typical wave
shape of the voltage at pin 6 (V

CC

) is given in Fig.3. During
the preheat periods the buffer capacitor is discharged.
The rectified current through the sense resistor is detected
and the output signal of the detector is used as a clock
signal for the counter. The preheat time is defined to 1.52 s
(at 50 Hz mains supply) using this counter. The preheat
time is very accurate, since it only depends on the
frequency of the mains supply.

After preheating, the switching device is turned off when
the current through the internal sense resistor equals at
least 285 mA. As a result of the current interruption and the
presence of an inductive load, a voltage peak is generated
that will normally ignite the TL-lamp. After ignition, the
lamp voltage is lower than the mains voltage. An ignited
TL-lamp prevents the voltage at pin 6 (VCC) to exceed start
level. In Fig.3 the TL-lamp is ignited after two ignition
attempts.

Fig.3 Typical wave shape of supply voltage.

handbook, full pagewidth

MGE006

V

CC(sl)

V

CC

t

prf

t

ini

t

prn

first preheat

second
preheat

time

first
ignition

second
ignition

1996 Jan 03 5

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

During preheating, the integrated circuit draws its supply
current from the buffer capacitor. As a result, the voltage
over the buffer capacitor decreases. When the ignition has
failed after the ignition pulse, the voltage on the buffer
capacitor increases to start level and the external
switching device will be turned on again. This time the
preheat time is reduced to 0.64 seconds because the lamp
electrodes are still warm. An internal counter limits the
number of ignitions attempts to 7. This prevents the lamp
from flickering at end of lamp life.

The UBA2000T has an integrated current protection.
When the current through the sense resistor exceeds the
protection level (I

prot

), the switching device is turned off
and the circuit will enter a standby state. Switching the
mains voltage off and on again will reset the circuit.

The flow chart of the starting process is given in Fig.5.
In the following subsections the several blocks of the block
diagram are described in more detail.

IC supply

When the mains power is switched on, the buffer capacitor
is charged and the internal current source is started.
The internal voltage is stabilized, making it independent of
the voltage at the buffer capacitor. An internal zener diode
limits the voltage at pin 6 (V

CC

) to start level (V

CC(sl)

).

Voltage detectors

The voltage detectors measure the voltage on the buffer
capacitor and activate the switching device when the start
value (V

CC(sl)

) is reached. The time required to charge the

capacitor is the initial time (t

ini

, see also Fig.3).

This time depends on the value of C1, the IC current and
the source resistance at pin V

in

(R1//R2). When the mains
voltage is near its peak value, the switching device is
actually turned on. When the voltage decreases to a value
indicating that the mains supply is interrupted, the starter
is ready to start preheating and igniting the TL-lamp at the
moment the mains supply returns.

Latch

The internal state of the latch represents the state of the
switching device. The setting of the latch depends on the
outputs of the voltage detectors, the number of starts
counter and the standby state. Resetting the latch is
controlled by the timer, the current detector and the current
protection circuit.

Current detector

The current detector detects when the switching device
must be turned off. The current detector also generates the
clock pulses to activate the counter (see Fig.4). For proper
functioning, the preheat current should be within the range
indicated by I

pr

. By including an hysteresis, unwanted
current peaks on the preheat current have no effect on the
counter. Because the current detector has a low-pass
transfer function, it is not influenced by spikes. This
circuitry eliminates the effect of spikes on the preheat time.

Edge detector

The edge detector ensures that the switching device will
be turned off when the rectified preheat current is on the
negative-going edge.

Fig.4 Current detection.

handbook, full pagewidth

MGE007

hysteresis

I

so

level

current through

sense resistor

clock signal

(fed to counter)

switch off level at end of preheat

clock generation during preheat

1996 Jan 03 6

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

Fig.5 Flow chart.

handbook, full pagewidth

MGE003

LOW VOLTAGE DETECTION

Start

charging of C1

S1 is closed

Enable reset

N = 1

CURRENT ALARM !!

Preheat

time > t

prn

VCC > V

CC(rst)

VCC < V

CC(rst)

VCC > V

CC(sl)

Vin > V

ign

Disable reset

N: ignition attempt count

N > 7

Open int. switches

Switch ext. switch on

1st start ?

(N = 1)

I

sense

falling edge ?

I

sense

= I

so

Close int. switches
Turn ext.switch off

(Generate voltage-peak

to ignite TL-lamp)

Standby state

N = N + 1

Close int. switches

Close int. switches

Turn ext. switch off

(if it was on)

Turn ext. switch off

(if it was on)

yes

yes

yes

yes

yes

yes

yes

yes

yes

no

no

no

no

no

no

no

no

Standby state

Preheat

time > t

prf

I

sense

> I

prot

and t > t

d

yes

yes

no

no no

I

sense

> I

prot

and t > t

d

The ext. switch is closed
when mains voltage is
near its peak value

1996 Jan 03 7

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

Counter

With the counter, which is supplied with pulses with twice
the frequency of the mains supply, the preheat time for the
first preheat and (if necessary) the next six preheats is
defined.

Time select

Depending on the state of the counter a long (t

prf

= 1.52 s)

or a short (t

prn

= 0.64 s) preheat time is selected.

Number of starts counter

The number of starts are counted by a counter. After seven
ignition attempts the IC is brought into standby state.
In standby state the supply current (I

CC

) is increased.
Due to the increased current, the buffer capacitor C1 will
discharge faster when the starter is disconnected from the
mains. This makes it possible to automatically reset the
starter the moment a malfunctioning tube is replaced by a
new one.

Current protection

When the current through the sense resistor exceeds its
limit (I

prot

), the switching device will be turned off. During
the first few periods of conduction, the current protection is
disabled (disable time td) to ensure that transient currents
do not trigger the current protection. When the current has
exceeded its limit, the switching device is turned off and
the IC enters the standby state that prevents re-activating
the switching device. Only an interruption of the supply
voltage will reset the standby state.

Output driver

The output driver is capable of driving a low input current
trigger device as well as a device controlled by a gate.
During start-up the output is kept low to prevent turning on
the external switching device.

T

RIGGER DEVICE

A typical application that uses a low input current trigger
device (such as TN22) as switching device is given in
Fig.7. The resistive divider R1//R2 is not connected to
ground but to the gate of the trigger device.

This has a minimal effect on the voltage division ratio,
since the voltage at the gate of the trigger device is low.
The output driver generates the current pulse, which is
necessary to activate the external switching device TH1.
This current pulse is synchronized with the voltage at pin 4
(V

in

). The switching device is triggered when Vin reaches

the V

ign

level. In that way the current through resistors R1
and R2 is a part of the current needed to activate the
switching device. If necessary, the current pulse is
delivered every half cycle of the mains voltage. When the
switching device must be turned off, the output driver is
capable of sinking the gate turn-off current of the switching
device.

It might be necessary to limit the current peaks, which flow
through the switching device at turn-on, resulting from
discharging the suppressor capacitor (C2). This can be
achieved using a resistor (R3).

G

ATE INPUT DEVICE

A typical application that uses a MOSFET is given in Fig.8.
In this circuit the resistive divider is connected to ground.
The output driver of the IC operates the same way as when
a trigger device is used. The output current pulse will
charge the gate of the MOSFET. As a result, the MOSFET
will be activated.

To keep the MOSFET conductive, a high ohmic pull-up
resistor is connected between the gate of the MOSFET
and the buffer capacitor C1. This is necessary, because
the output current is a pulse and not a continuous signal.
This pull-up resistor increases the current which is drawn
from the buffer capacitor. An internal zener diode in the IC
limits the voltage at the output (and thus at the gate of the
MOSFET) to a typical value of 6.8 V.

Both switching devices require the breakdown voltage
(V

(BR)AK

or V

(BR)DS

) to be larger than the ignition voltage of

the TL-lamp.

1996 Jan 03 8

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Notes

1. This pin is connected to an internal zener diode (typical working voltage is 6.8 V).

2. This pin is connected to an internal zener diode (working voltage between 130 and 230 V).
The current entering this pin must be limited to <10 mA.

3. Inrush current, duration <2 ms.

QUALITY SPECIFICATION

In accordance with

“SNW-FQ-611-E”

with the following exception: With respect to the integrated sense resistor a lifetime
of 60000 lamp starts (with max. 7 start attempts) at maximum preheat current level of 1.4 A (RMS) is guaranteed.
The number of the quality specification can be found in the

“Quality Reference Handbook”

. The handbook can be ordered

using the code 9397 750 00192.

THERMAL CHARACTERISTICS

CHARACTERISTICS

T

amb

=25°C; all voltages referenced to GND; see application diagrams (Figs. 7 and 8); V

mains

= 220 V, 50 Hz; N is the

number of ignition attempts; unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

out

output voltage note 1 − 6V

V

in

input voltage note 2 − 125 V

V

TEST

voltage at test pin − 6V

I

sense

current through sense resistor note 3 − 6A

P

tot

total power dissipation − 395 mW

T

stg

storage temperature non-operating −55 150 °C

T

amb

ambient temperature operating −40 85 °C

SYMBOL PARAMETER VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air 160 K/W

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

IC voltages

V

CC(sl)

supply voltage start level 40 44 49 V

V

CC(rst)

supply voltage reset level −−9V

V

ign

ignition voltage striking switching device 67 − 97 V

Lamp voltages

V

lamp

TL-lamp voltage 50 − 140 V

Supply current

I

CC

supply current VCC= 30 V; note 1 − 32 42 µA

after 7

th

start attempt;

VCC=30V

− 145 −µA

I

c

control current note 2 − 170 −µA

1996 Jan 03 9

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

Output stage

I

source

peak source current
(pulse shape Fig.6)

V

out

< 2 V; striking

switching device

1.5 − 10 mA

I

sink

output sink current V

out

= 0.8 V 50 −−mA

t

W

pulse width VCC=30V 5 −−µs

Q

p

pulse charge VCC= 30 V; note 3 21 −−nC

V

out

output voltage I

sink

= 0.5 mA; driving gate

device in preheat mode

− 6.8 − V

Timing

t

prf

preheat time (first) N = 1; note 4 − 1.52 − s

t

prn

preheat time (next) 2 ≤ N ≤ 7; note 5 − 0.64 − s

t

ini

initial time − 125 − ms

Current protection

I

prot(m)

current protection level (peak value) 2.2 3.4 − A

t

d

delay time before current protection is
enabled

note 6 − 70 − ms

Sense resistor

R

sense

internal sense resistor note 7 − 26 − mΩ

Preheat current

I

pr(rms)

preheat current (RMS value) note 8 0.33 − 1.4 A

Switching off current

I

so

preheat current level at the moment it
is switched off

note 9 285 380 475 mA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Notes

1. When the switching device is triggered, ICC=I

source

.

2. This is the active current when the lamp is lit.

The given value is valid for V

lamp

= 115 V. The total
current at Vin equals: Iin=ICC+Ic (leakage currents
are neglected).

3. Qp=I

source

× tp.

4. Time is derived from the mains frequency; division
factor equals 76.

5. Time is derived from the mains frequency; division
factor equals 32.

6. The delay time is set by a clock signal, which is derived
from the current through the sense resistor. Due to
inrush transients of the preheat current, variation of t

d

is possible.

7. This is the resistance of the internal sense circuit
(excluding the bonding wires).

8. To guarantee good functioning, a crest factor of at
least 1.5 is needed at low currents.

9. When the holding current of TH1 is lower than Iso, TH1
is switched off at the holding current (in case of a
trigger device).

Fig.6 Pulse shape (typical value).

handbook, halfpage

MGE008

I

source

(mA)

3

tw = 7 µs

1996 Jan 03 10

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

APPLICATION INFORMATION

Fig.7 Application diagram (with trigger device).

handbook, full pagewidth

100 Ω

5.6 nF

3.3
µF

V

lamp

V

in

V

out

V

sense

V

CC

I

CCIc

TL-

LAMP

load

C

0.6 to 2 H

mains

supply

CIRCUIT

S2

D0

S1

GND

64

3

C1

1

2

UBA2000T

R3

100 kΩ

R1

62

kΩ

R2

C2

TH1
(i.e. TN22)

MGE004

1996 Jan 03 11

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

Fig.8 Application diagram (with MOSFET device).

handbook, full pagewidth

5.6 nF

3.3
µF

V

lamp

V

in

V

out

V

sense

V

CC

I

CCIc

TL-

LAMP

load

C

0.6 to 2 H

mains

supply

CIRCUIT

S2

S1

GND

64

3

C1

1

2

UBA2000T

100

kΩ

R1

1 MΩ

R3

62
kΩ

R2

C2

MOSFET

MGE005

1996 Jan 03 12

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

PACKAGE OUTLINE

UNIT

A

max.

A

1

A2A

3

b

p

cD

(1)E(2)

(1)

eHELLpQZywv θ

REFERENCES

OUTLINE
VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC JEDEC EIAJ

mm

inches

1.75

0.25

0.10

1.45

1.25

0.25

0.49

0.36

0.25

0.19

5.0

4.8

4.0

3.8

1.27

6.2

5.8

1.05

0.7

0.6

0.7

0.3

8
0

o
o

0.25 0.10.25

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

Notes

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

2. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

1.0

0.4

SOT96-1

X

w M

θ

A

A

1

A

2

b

p

D

H

E

L

p

Q

detail X

E

Z

e

c

L

v M

A

(A )

3

A

4

5

pin 1 index

1

8

y

076E03S MS-012AA

0.069

0.010

0.004

0.057

0.049

0.01

0.019

0.014

0.0100

0.0075

0.20

0.19

0.16

0.15

0.050

0.244

0.228

0.028

0.024

0.028

0.012

0.010.010.041 0.004

0.039

0.016

0 2.5 5 mm

scale

SO8: plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

95-02-04
97-05-22

1996 Jan 03 13

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

SOLDERING
Introduction

There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.

This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our

“IC Package Databook”

(order code 9398 652 90011).

Reflow soldering

Reflow soldering techniques are suitable for all SO
packages.

Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.

Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.

Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.

Wave soldering

Wave soldering techniques can be used for all SO
packages if the following conditions are observed:

• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.

• The longitudinal axis of the package footprint must be
parallel to the solder flow.

• The package footprint must incorporate solder thieves at
the downstream end.

During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.

Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.

A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.

Repairing soldered joints

Fix the component by first soldering two diagonally­opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.

1996 Jan 03 14

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

DEFINITIONS

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

1996 Jan 03 15

Philips Semiconductors Product specification

Electronic TL-lamp starter UBA2000T

NOTES

Philips Semiconductors – a worldwide company

Argentina: IEROD, Av. Juramento 1992 - 14.b, (1428)

BUENOS AIRES, Tel. [phone], Fax. [phone]

Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,

Tel. [phone], Fax. [phone]

Austria: Triester Str. 64, A-1101 WIEN, P.O. Box 213,

Tel. [phone], Fax. [phone]

Belgium: Postbus 90050, 5600 PB EINDHOVEN, The Netherlands,

Tel. [phone], Fax. [phone]

Brazil: Rua do Rocio 220 - 5

th

floor, Suite 51,
CEP: 04552-903-SÃO PAULO-SP, Brazil,
P.O. Box 7383 (01064-970),
Tel. [phone], Fax. [phone]

Canada: PHILIPS SEMICONDUCTORS/COMPONENTS:

Tel. [phone], Fax. [phone]

Chile: Av. Santa Maria 0760, SANTIAGO,

Tel. [phone], Fax. [phone]

China/Hong Kong: 501 Hong Kong Industrial Technology Centre,

72 Tat Chee Avenue, Kowloon Tong, HONG KONG,
Tel. [phone], Fax. [phone]

Colombia: IPRELENSO LTDA, Carrera 21 No. 56-17,

77621 BOGOTA, Tel. [phone],
Fax. [phone]

Denmark: Prags Boulevard 80, PB 1919, DK-2300

COPENHAGEN S, Tel. [phone], Fax. [phone]

Finland: Sinikalliontie 3, FIN-02630 ESPOO,

Tel. [phone], Fax. [phone]

France: 4 Rue du Port-aux-Vins, BP317,

92156 SURESNES Cedex,
Tel. [phone], Fax. [phone]

Germany: P.O. Box 10 51 40, 20035 HAMBURG,

Tel. [phone], Fax. [phone]

Greece: No. 15, 25th March Street, GR 17778 TAVROS,

Tel. [phone] 911, Fax. [phone]

India: Philips INDIA Ltd, Shivsagar Estate, A Block,

Dr. Annie Besant Rd. Worli, Bombay 400 018
Tel. [phone], Fax. [phone]

Indonesia: Philips House, Jalan H.R. Rasuna Said Kav. 3-4,

P.O. Box 4252, JAKARTA 12950,
Tel. [phone], Fax. [phone]

Ireland: Newstead, Clonskeagh, DUBLIN 14,

Tel. [phone], Fax. [phone]

Italy: PHILIPS SEMICONDUCTORS S.r.l.,

Piazza IV Novembre 3, 20124 MILANO,
Tel. [phone], Fax. [phone]

Japan: Philips Bldg13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,

Tel. [phone], Fax. [phone]

Korea: Philips House, 260-199 Itaewon-dong,

Yongsan-ku, SEOUL, Tel. [phone], Fax. [phone]

Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA,

SELANGOR, Tel. [phone], Fax. [phone]

Mexico: 5900 Gateway East, Suite 200, EL PASO, TX 79905,

Tel. [phone], Fax. [phone]

Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB,

Tel. [phone], Fax. [phone]

New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,

Tel. [phone], Fax. [phone]

Norway: Box 1, Manglerud 0612, OSLO,

Tel. [phone], Fax. [phone]

Pakistan: Philips Electrical Industries of Pakistan Ltd.,

Exchange Bldg. ST-2/A, Block 9, KDA Scheme 5, Clifton,
KARACHI 75600, Tel. [phone],
Fax. [phone]

Philippines: PHILIPS SEMICONDUCTORS PHILIPPINES Inc.,

106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI,
Metro MANILA, Tel. [phone], Fax. [phone]

Portugal: PHILIPS PORTUGUESA, S.A.,

Rua dr. António Loureiro Borges 5, Arquiparque - Miraflores,
Apartado 300, 2795 LINDA-A-VELHA,
Tel. [phone], Fax. [phone]

Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,

Tel. [phone], Fax. [phone]

South Africa: S.A. PHILIPS Pty Ltd.,

195-215 Main Road Martindale, 2092 JOHANNESBURG,
P.O. Box 7430, Johannesburg 2000,
Tel. [phone], Fax. [phone]

Spain: Balmes 22, 08007 BARCELONA,

Tel. [phone], Fax. [phone]

Sweden: Kottbygatan 7, Akalla. S-164 85 STOCKHOLM,

Tel. [phone], Fax. [phone]

Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,

Tel. [phone], Fax. [phone]

Taiwan: PHILIPS TAIWAN Ltd., 23-30F, 66, Chung Hsiao West

Road, Sec. 1. Taipeh, Taiwan ROC, P.O. Box 22978,
TAIPEI 100, Tel. [phone], Fax. [phone]

Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,

209/2 Sanpavuth-Bangna Road Prakanong,
Bangkok 10260, THAILAND,
Tel. [phone], Fax. [phone]

Turkey:Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL,

Tel. [phone], Fax. [phone]

Ukraine: Philips UKRAINE, 2A Akademika Koroleva str., Office 165,

252148 KIEV, Tel.[phone], Fax. [phone]

United Kingdom: Philips Semiconductors LTD.,

276 Bath Road, Hayes, MIDDLESEX UB3 5BX,
Tel. [phone], Fax. [phone]

United States:811 East Arques Avenue, SUNNYVALE,

CA 94088-3409, Tel. [phone], Fax. [phone]

Uruguay: Coronel Mora 433, MONTEVIDEO,

Tel. [phone], Fax. [phone]

Internet: http://www.semiconductors.philips.com/ps/
For all other countries apply to: Philips Semiconductors,

International Marketing and Sales, Building BE-p,
P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands,
Telex 35000 phtcnl, Fax. [phone]

SCDS47 © Philips Electronics N.V. 1996

All rights are reserved. Reproduction in whole or in part is prohibited without the
prior written consent of the copyright owner.

The information presented in this document does not form part of any quotation
or contract, is believed to be accurate and reliable and may be changed without
notice. No liability will be accepted by the publisher for any consequence of its
use. Publication thereof does not convey nor imply any license under patent- or
other industrial or intellectual property rights.

Printed in The Netherlands

297021/1100/01/pp16 Date of release: 1996 Jan 03
Document order number: 9397 750 00547