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
ISOCOM INC
720 E., Park Boulevard, Suite 104,
Plano, TX 75074 USA
Tel: (972) 423-5521
Fax: (972) 422-4549
3/10/97
DB91085-AAS/A2
ISO - LOGIC INVERTER
SCHMITT TRIGGER
INTERRUPTER SWITCH
H21L1, H21L2
H22L1, H22L2
OPTICAL
CENTRE
LINE
12.7
E
3.0
1
2
5
4
9.0
8.0
11.1
10.5
0.45
0.40
7.62
6.6
3.3
3.0
2.8
2.54
Dimensions in mm
3
1
2
pin 5 G
ND
pin 3 V
CC
pin 4 V
O
OPTIC AL
CENTRE
LINE
12.7
E
3.0
1
2
5
4
9.0
8.0
11.1
10.5
0.45
0.40
7.62
6.6
3.3
3.0
2.8
2.54
3
1
2
pin 3 V
CC
pin 4 V
O
25.7
24.1
19.05
pin 5 G
ND
H22L1
H22L2
H21L1
H21L2
Voltage Regulator
4 Out
3 V
CC
5 G
ND
Amp
1
2
DESCRIPTION
The H21L_ and H22L_ series of transmissive
photointerrupters are single channel switches
consisting of a Gallium Arsenide infrared
emitting diode coupled to a high speed integrated
circuit detector. The output incorporates a
Schmitt trigger which provides hysteresis for
noise immunity and pulse shaping. The gap in
the plastic housing provides a means of
interrupting the signal with an opaque material,
switching the output from an 'ON' into an 'OFF'
state.
FEATURES
l
Built in Schmitt trigger circuit
l
Open collector output
l
High sensitivity
l
3mm gap between LED and detector
l
1mm aperture over LED and detector
APPLICATIONS
l
Floppy disk drives, Copiers, Printers,
Facsimilies, VCR's, Cassette tape
Recorders, Automatic vending machines
DB91085-AAS/A2
PARAMETER
MIN TYP MAX UNITS TEST CONDITION
Input
Forward Voltage (V
F
)
1.1
1.6
V
I
F
= 20mA
Reverse Voltage (V
R
)
6
V
I
R
= 10
A
Reverse Current (I
R
)
10
A
V
R
= 3V
Detector
Operating Voltage Range V
CC
4
15
V
Low Level Supply Current I
CCL
1.6
5
mA
V
CC
= 5V, I
F
= 20mA
High Level Supply Current I
CCH
1.0
5
mA
V
CC
= 5V, I
F
= 0mA
Low Level Output Voltage V
OL
0.4
V
V
CC
= 5V, I
F
= 30mA
R
L
= 270
High Level Output Current I
OH
100
A
V
CC
= 15V, I
F
= 0mA
V
O
= 15V
Turn-on Threshold Current I
F
(
ON
)
H21L1, H22L1
30
mA
V
CC
= 5V, R
L
= 270
H21L2, H22L2
15
mA
V
CC
= 5V, R
L
= 270
Turn-off Threshold Current I
F
(
OFF
)
H21L1, H22L1
0.5
mA
V
CC
= 5V, R
L
= 270
H21L2, H22L2
0.5
mA
V
CC
= 5V, R
L
= 270
Hysteresis Ratio I
F
(
OFF
) / I
F
(
ON
)
0.5
0.9
V
CC
= 5V, R
L
= 270
Rise Time
tr
0.1
s
V
CC
= 5V
I
F
= 20mA
Fall Time
tf
0.05
s
R
L
= 270
Note 1
Special Selections are available on request. Please consult the factory.
3/10/97
ELECTRICAL CHARACTERISTICS ( T
A
= 25C Unless otherwise noted )
ABSOLUTE MAXIMUM RATINGS (25C unless
otherwise specified)
Storage Temperature
-40C to +85C
Operating Temperature
-25C to +85C
Lead Soldering Temperature
260C
(5 secs maximum)
INFRARED EMITTING DIODE
Power Dissipation
75 mW
Forward Current ( Continuous )
50 mA
Forward Current ( Peak )
1 A
(Pulse Width
100
s, Duty Ratio = 0.01)
Reverse Voltage
6V
PHOTO DETECTOR
Power Dissipation
250 mW
Output Current
50mA
Allowed Range V
35
0 to 35V
Allowed Range V
45
0 to 40V
DB91085-AAS/A2
3/10/97
50
-25 0 25 50 75 100 125
Ambient temperature T
A
( C )
0
300
Collector power dissipation P
C
(mW)
Collector Power Dissipation vs. Ambient Temperature
0
1.0
2.0
3.0
V
CC
= 5V
Ambient temperature T
A
( C )
-25 0 25 50 75 100
-25 0 25 50 75 100
Ambient temperature T
A
( C )
Low level output voltage V
OL
( V )
Low Level Output Voltage vs.
Ambient Temperature
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1
Low level output voltage V
OL
( V )
Low Level Output Voltage vs.
Low Level Output Current
Low level output current I
OL
( mA )
0.1
0.01
0.02
0.2
0.5
Supply Current vs.
Ambient Temperature
Supply current I
CC
(mA)
V
CC
= 5V
I
F
= 30mA
T
A
= 25C
0.1 0.2 0.5 1 2 5 10
0
0.1
0.2
0.3
0.4
Rise time, fall time tr, tf (
s)
Rise Time, Fall Time vs. Load
Resistance
Load resistance R
L
( k
)
0.5
Ambient temperature T
A
( C )
60
30
20
10
0
40
50
-25 0 25 50 75 100 125
Forward Current vs. Ambient Temperature
Forward current I
F
(mA)
100
150
200
250
1 10 50 100
0.05
V
CC
= 5V
I
F
= 30mA
T
A
= 25C
0.6
I
CCH
I
CCL
V
CC
= 5V
I
F
= 30mA
I
OL
= 30mA
5mA
16mA
tf
tr
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