H21L1, H21L2
H22L1, H22L2
ISO - LOGIC INVERTE R
SCHMITT TRIGGER
INTERRUPTER SWITCH
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.
H22L1
H22L2
1
2
9.0
8.0
E
12.7
3.0
5
3
4
11.1
10.5
Dimensions in mm
pin 3 V
2
pin 4 V
1
pin 5 G
6.6
ND
3.3
3.0
2.8
CC
O
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
Voltage Regulator
2
3 V
CC
4 Out
H21L1
H21L2
1
2
9.0
8.0
25.7
24.1
E
7.62
19.05
12.7
3.0
5
3
0.45
0.40
4
11.1
10.5
0.45
0.40
2
1
6.6
2.54
OPTICAL
CENTRE
LINE
pin 3 V
pin 4 V
pin 5 G
3.3
3.0
OPTICAL
CENTRE
LINE
CC
O
ND
2.8
1
Amp
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
3/10/97
5 G
ND
7.62
2.54
ISOCOM INC
720 E., Park Boulevard, Suite 104,
Plano, TX 75074 USA
Tel: (972) 423-5521
Fax: (972) 422-4549
DB91085-AAS/A2
ABSOLUTE MAXIMUM RATINGS (25°C unless
otherwise specified)
Storage Temperature -40°C to +85°C
Operating Temperature -25°C to +85°C
Lead Soldering Temperature 260°C
(5 secs maximum)
INFRARED EMITTING DIODE
Power Dissipation 75 mW
Forward Current ( Continuous ) 50 mA
Forward Current ( Peak ) 1 A
(Pulse Width ≤ 100µs, Duty Ratio = 0.01)
Reverse Voltage 6V
PHOTO DETECTOR
Power Dissipation 250 mW
Output Current 50mA
Allowed Range V
Allowed Range V
35
45
0 to 35V
0 to 40V
ELECTRICAL CHARACTERISTICS ( TA= 25°C Unless otherwise noted )
PARAMETER MIN TYP MAX UNITS TEST CONDITION
Input Forward Voltage (VF) 1.1 1.6 V IF = 20mA
Reverse Voltage (VR)6VI
Reverse Current (IR)10µAV
Detector Operating Voltage Range V
Low Level Supply Current I
High Level Supply Current I
Low Level Output Voltage V
CCL
CCH
OL
CC
415V
1.6 5 mA VCC= 5V, IF = 20mA
1.0 5 mA VCC= 5V, IF = 0mA
0.4 V VCC= 5V, IF = 30mA
= 10µA
R
= 3V
R
RL= 270Ω
High Level Output Current I
OH
100 µAV
CC
VO = 15V
Turn-on Threshold Current IF (
ON
)
H21L1, H22L1 30 mA VCC= 5V, RL= 270Ω
H21L2, H22L2 15 mA VCC= 5V, RL= 270Ω
Turn-off Threshold Current IF (
OFF
)
H21L1, H22L1 0.5 mA VCC= 5V, RL= 270Ω
H21L2, H22L2 0.5 mA VCC= 5V, RL= 270Ω
= 15V, IF = 0mA
Hysteresis Ratio IF (
OFF
) / IF (
) 0.5 0.9 VCC= 5V, RL= 270Ω
ON
Rise Time tr 0.1 µsV
Fall Time tf 0.05 µsR
Note 1 Special Selections are available on request. Please consult the factory.
3/10/97
= 5V
CC
IF = 20mA
= 270Ω
L
DB91085-AAS/A2
Collector Power Dissipation vs. Ambient Temperature
300
250
(mW)
C
200
( V )
OL
1
0.5
0.2
Low Level Output Voltage vs.
Low Level Output Current
V
= 5V
CC
IF = 30mA
TA = 25°C
150
100
50
Collector power dissipation P
0
-25 0 25 50 75 100 125
Ambient temperature TA ( °C )
Forward Current vs. Ambient Temperature
60
50
(mA)
40
F
30
20
0.1
0.05
0.02
Low level output voltage V
0.01
1 10 50 100
Low level output current I
Rise Time, Fall Time vs. Load
Resistance
0.6
V
= 5V
CC
IF = 30mA
0.5
TA = 25°C
0.4
0.3
0.2
OL
tr
( mA )
Forward current I
10
0
-25 0 25 50 75 100 125
Ambient temperature TA ( °C )
Supply Current vs.
Ambient Temperature
VCC = 5V
3.0
(mA)
CC
2.0
I
CCL
1.0
Supply current I
I
CCH
0
-25 0 25 50 75 100
Ambient temperature TA ( °C )
0.1
Rise time, fall time tr, tf (µs)
0
0.1 0.2 0.5 1 2 5 10
Load resistance RL ( kΩ)
Low Level Output Voltage vs.
Ambient Temperature
0.7
0.6
( V )
OL
0.5
V
= 5V
CC
IF = 30mA
0.4
0.3
IOL = 30mA
0.2
0.1
Low level output voltage V
0
-25 0 25 50 75 100
Ambient temperature TA ( °C )
tf
16mA
5mA
3/10/97
DB91085-AAS/A2
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