ISOCOM COMPONENTS LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, Cleveland, TS25 1YD
Tel: (01429) 863609 Fax :(01429) 863581
5/3/03
DB92175-AAS/A1
APPROVALS
lUL recognised, File No. E91231
DESCRIPTION
The IS900 optically coupled isolator consists of a
Gallium Arsenide infrared emitting diode and a
Microprocessor Compatible Schmitt trigger output
mounted in a standard 6 pin dual in line package.
FEATURES
lOptions :-
10mm lead spread - add G after part no.
Surface mount - add SM after part no.
Tape&reel - add SMT&R after part no.
lHigh data rate, 1MHz typical (NRZ)
lMicroprocessor compatible drive
lLogic compatible output sinks 16
milliamperes at 0.4 volts maximum
lHigh Isolation Voltage (5.3kVRMS ,7.5kVPK)
lHigh common mode rejection ratio
lFast switching : t rise, t fall = 100nS typical
lWide supply voltage capability, compatible
with all popular logic systems
lGuaranteed On / Off threshold hysteresis
APPLICATIONS
lLogic to logic isolator
lLine receiver-eliminates noise and
transient problems
lProgrammable current level sensor
lAC to TTL conversion - square wave shaping
lDigital programming of power supplies
lInterfaces computers with peripherals
MICROPROCESSOR COMPATIBLE
SCHMITT TRIGGER OPTICALLY
COUPLED ISOLATOR
ABSOLUTE MAXIMUM RATINGS
(25°C unless otherwise specified)
Storage Temperature -40°C to + 125°C
Operating Temperature -25°C to + 85°C
Lead Soldering Temperature
(1/16 inch (1.6mm) from case for 10 secs) 260°C
INPUT DIODE
Forward Current, IF50mA
Peak forward current
(Pulse width ≤ 100uS, Duty ratio=0.001) 1A
Reverse Voltage, VR6V
Power Dissipation
(derate linearly 1.41mW / °C above 25°C) 70mW
OUTPUT DETECTOR
Output Voltage, Vcc 16V
Supply Voltage, VOH 16V
Output current, IOL 50mA
Power Dissipation
(derate linearly 2mW / °C above 25°C) 150mW
POWER DISSIPATION
Total Power Dissipation
(derate linearly 2.94mW/ °C above 25°C) 170mW
Dimensions in mm
1
3 4
6
2 5
7.12 ±0.3
1.2 ±0.3
6.5 ±0.3
2.9 ±0.5
0.5 ±0.1
2.54 ±0.25
3.5 ±0.5
3.25 ±0.5
0.5typ
7.62 ±0.3
0.26 ±0.1
13°
Max
VCC
GROUND
VO
OPTION G
SURFACE MOUNT
OPTION SM
10.16
10.46
9.86
0.6
0.1
7.62
0.26
1.25
0.75
IS900
DB92175-AAS/A1
5/3/03
PARAMETER MIN TYP MAX UNITS TEST CONDITION
Input Forward Voltage (VF )0.7 1.0 VIF = 0.3mA
Forward Voltage (VF )1.1 1.4 VIF = 4mA
Reverse Current (IR )10 µA VR = 3V
Reverse Breakdown Voltage(VR )3.0 VIR =10 µA
Output Operating Voltage Range (VCC )315 V
Supply Current I6 (off )5mA IF = 0mA, VCC = 5V
Output Current High ( IOH )100 µAIF= 0mA,VCC= VO=15V
Coupled Supply Current I6 (on )5mA IF = 4mA, VCC = 5V
Output Voltage, Low (VOL ) 0.4 VIOL= 16mA, IF = 4mA,
VCC = 5V
Turn-on Threshold Current IF (on ) 1.1 2.0 mA RL= 280Ω, VCC = 5V,
TA = 25°C
4.0 mA RL= 280Ω, VCC = 5V
Turn-off Threshold Current IF (off )0.3 mA RL= 270Ω, VCC = 5V
Hysteresis Ratio IF (off ) / IF (on ) 0.5 0.9
Input to Output Isolation Voltage VIS0 5300 VRMS See note 1
7500 VPK See note 1
High to Low (tPHL) 1 3 µsTA = 25°C
Fall Time (tf) 0.5 µsVCC = 5V
Low to High (tPLH) 2 6 µsIF = 4mA
Rise Time (tr) 0.5 µsRL= 280Ω
ELECTRICAL CHARACTERISTICS ( TA= 25°C Unless otherwise noted )
Note 1Measured with input leads shorted together and output leads shorted together.
Note 2Special Selections are available on request. Please consult the factory.
SWITCHING TEST CIRCUIT
tr
tf
50%
tPLH
tPHL
VOH
90%
10% 1.5V
VO
VIN
VO
SWITCHING CHARACTERISTICS
5V
270Ω
4VO
0.1µF
5
VIN
47ΩI6
6
Z = 50Ω
tr = tf = 0.01µ sec
DB92175-AAS/A1
5/3/03
1
0 1 2
Input current IF (mA)
3
0
4
Supply voltage VCC ( V )
Output voltage VO ( V )
1.0
0.4
0.2
0
0.6
0.8
0 2 4 6 8 10 12 14 16
Transfer Characteristics
Threshold Current vs. Supply Voltage
-55 -25 0 25 50 75 100
Ambient temperature TA ( °C )
Load current IO (mA)
Threshold Current vs. Ambient Temperature
2
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Threshold current IF ( normalized )
On Voltage vs. Load Current
1 2 5 10 20 50
Output voltage low VOL ( V )
Forward current IF (mA)
Supply Current vs. Supply Voltage
Supply voltage VCC ( V )
Supply Current IC (mA)
0
0
0 2 4 6 8 10 12 14 16
0 0.5 1 1.5 2 2.5 3
Forward voltage VF ( V )
Forward Voltage vs. Forward Current
1.2
1.4
5
6
1.6
1.8
Threshold current IF (on) IF (off ) ( normalized )
RL= 270Ω
VCC = 5V
TA = 25°C
IF Normalized
to IF (on) at
VCC = 5V
TA = 25°C
Normalized to
VCC = 5V
TA = 25°C
VOH
VOL
IF (off ) IF (on)
Turn-off threshold
Turn-on threshold
0.02
0.05
0.1
0.2
0.5
1.0
VCC = 5V
TA = 25°C
100°C
25°C
-55°C
1.0
10
100
2
5
20
50
0.5
0.2
2
4
6
TA = 25°C
IF = 0mA
IF = 5mA
