H21L Series — OPTOLOGIC
®
Optical Interrupter Switch
January 2008
H21L Series
OPTOLOGIC
®
Optical Interrupter Switch
Features
■
Low cost
■
0.035" apertures
■
Black plastic opaque housing
■
Mounting tabs on housing
■
Choice of inverter or buffer output functions
■
Choice of open-collector or totem-pole output
Description
The H21L series are slotted optical switches designed
for multipurpose non contact sensing. They consist of a
GaAs LED and a silicon OPTOLOGIC
®
sensor pack-
aged in an injection molded housing and facing each
other across a .124" (3.15 mm) gap. The output is either
inverting or non-inverting, with a choice of totem-pole or
open-collector configuration for TTL/CMOS compatibility.
configuration
■
TTL/CMOS compatible output functions
Part Number Definitions
H21LTB, Totem-pole, buffer output
H21LTI, Totem-pole, inverter output
H21LOB, Open-collector, buffer output
H21LOI, Open-collector, inverter output
Package Dimensions
0.972 (24.7)
0.957 (24.3)
0.472 (12.0)
0.457 (11.6)
C
L
Ø 0.133 (3.4)
Ø 0.126 (3.2)
(2X)
0.249 (6.35)
0.243 (6.15)
+
E
D
+
C
L
0.39 (1.00)
0.34 (0.85)
0.755 (19.2)
0.745 (18.9)
0.129 (3.3)
0.119 (3.0)
0.103 (2.60) NOM
0.433 (11.0)
0.422 (10.7)
Optical
C
L
0.125 (3.2)
0.119 (3.0)
0.250 (6.36)
0.216 (5.50)
0.350 (8.9)
0.330 (8.4)
C
L
0.315 (8.0) MIN
0.350 (8.9)
0.330 (8.4)
0.055 (1.40)
0.045 (1.14)
0.055 (1.40)
0.045 (1.14)
0.110 (2.8)
0.091 (2.3)
PIN 1 ANODE
PIN 2 CATHODE
PIN 3 V
CC
PIN 4 V
O
2
1
3
4
5
0.020 (0.51) (SQ)
PIN 5 GND
Notes:
1. Dimensions for all drawings are in
inches (mm).
2. Tolerance of ± .010 (.25) on all
non-nominal dimensions unless
otherwise specified.
www.fairchildsemi.com
©2004 Fairchild Semiconductor Corporation
H21L Series Rev. 1.1.0
H21L Series — OPTOLOGIC
®
Optical Interrupter Switch
Absolute Maximum Ratings
(T
A
= 25°C Unless otherwise specified)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
T
OPR
T
STG
T
SOL-I
T
SOL-F
INPUT (Emitter)
I
F
V
R
P
D
I
O
V
CC
V
O
P
D
Operating Temperature
Storage Temperature
Parameter
Rating
-40 to +85
-40 to +85
240 for 5 sec
260 for 10 sec
Units
°C
°C
°C
°C
Soldering Temperature (Iron)
(5)(6)(7)(8)
Soldering Temperature (Flow)
(5)(6)(8)
Continuous Forward Current
Reverse Voltage
Power Dissipation
(3)
Output Current
Supply Voltage
Output Voltage
Power Dissipation
(4)
50
6
100
mA
V
mW
OUTPUT (Sensor)
50
4.0 to 16
30
150
mA
V
V
mW
Notes:
3. Derate power dissipation linearly 1.67mW/°C above 25°C.
4. Derate power dissipation linearly 2.50mW/°C above 25°C.
5. RMA flux is recommended.
6. Methanol or isopropyl alcohols are recommended as cleaning agents.
7. Soldering iron 1/16" (1.6mm) from housing.
8. As long as leads are not under any stress or spring tension.
©2004 Fairchild Semiconductor Corporation
H21L Series Rev. 1.1.0
www.fairchildsemi.com
2
H21L Series — OPTOLOGIC
®
Optical Interrupter Switch
Electrical/Optical Characteristics
(T
A
= 25°C)
Symbol
INPUT (Emitter)
V
F
I
R
I
CC
COUPLED
V
OL
Low Level Output Voltage
H21LTB, H21LOB
Low Level Output Voltage
H21LTI, H21LOI
V
OH
High Level Output Voltage
H21LTB
High Level Output Voltage
H21LTI
I
OH
High Level Output Current
H21LOB
High Level Output Current
H21LOI
I
F
(+)
I
F
(-)
I
F
(+) / I
F
(-)
t
PLH
, t
PHL
Turn on Threshold Current
Turn off Threshold Current
Hysteresis Ratio
Propagation Delay,
H21LOI, H21LOB
Propagation Delay,
H21LTI, H21LTB
t
r
, t
f
Output Rise and Fall Time,
H21LOI, H21LOB
Output Rise and Fall Time,
H21LTI, H21LTB
V
CC
= 5V, R
L
= 300Ω (Fig. 9)
V
CC
= 5V, R
L
= 300Ω (Fig. 9)
V
CC
= 5V, R
L
= 300Ω (Fig. 9)
V
CC
= 5V, R
L
= 300Ω (Fig. 9)
I
F
= 0mA, V
CC
= 5V, I
OL
= 16mA
I
F
= 15mA, V
CC
= 5V, I
OL
= 16mA
I
F
= 15mA, V
CC
= 5V, I
OH
= -1mA
I
F
= 0mA, V
CC
= 5V, I
OH
= -1mA
I
F
= 15mA, V
CC
= 5 V, V
OH
= 30V
I
F
= 0 mA, V
CC
= 5 V, V
OH
= 30 V
V
CC
= 5V
V
CC
= 5V
0.50
1.2
6
6
100
70
ns
µs
2.4
2.4
100
100
15
mA
mA
µA
0.4
0.4
V
V
Forward Voltage
Reverse Leakage Current
I
F
= 20mA
V
R
= 5 V
V
CC
= 5 V
1.5
10
V
µA
Parameter
Test Conditions
Min.
Typ
Max.
Units
OUTPUT (Sensor)
Supply Current
5
mA
Input/Output Table
Part Number
H21LTB
H21LTB
H21LTI
H21LTI
H21LOB
H21LOB
H21LOI
H21LOI
LED
On
Off
On
Off
On
Off
On
Off
Output
High
Low
Low
High
High
Low
Low
High
©2004 Fairchild Semiconductor Corporation
H21L Series Rev. 1.1.0
www.fairchildsemi.com
3
H21L Series — OPTOLOGIC
®
Optical Interrupter Switch
Circuit Schematics
ANODE (1)
VOLTAGE
REGULATOR
V
CC
(3)
H21LTB
LA
V
OUT
(4)
Totem-Pole Output Buffer
CATHODE (2)
GND (5)
ANODE (1)
VOLTAGE
REGULATOR
V
CC
(3)
H21LTI
LA
V
OUT
(4)
Totem-Pole Output inverter
CATHODE (2)
GND (5)
ANODE (1)
V
CC
(3)
VOLTAGE
REGULATOR
V
OUT
(4)
LA
H21LOB
Open-Collector Output Buffer
CATHODE (2)
GND (5)
ANODE (1)
V
CC
(3)
VOLTAGE
REGULATOR
V
OUT
(4)
LA
H21LOI
Open-Collector Output Inverter
CATHODE (2)
GND (5)
©2004 Fairchild Semiconductor Corporation
H21L Series Rev. 1.1.0
www.fairchildsemi.com
4
H21L Series — OPTOLOGIC
®
Optical Interrupter Switch
Typical Performance Characteristics
6
V
OH
5
V
CC
= 5V
R
L
= 270Ω
T
A
= 25˚C
6
V
CC
= 5V
R
L
= 270Ω
T
A
= 25˚C
V
OH
5
V
O
- Output Voltage (V)
V
O
- Output Voltage (V)
4
4
3
I
F (OFF)
2
I
F (ON)
3
I
F (OFF)
2
I
F (ON)
1
V
OL
0
0
1
2
3
4
5
1
V
OL
0
0
1
2
3
4
5
I
F
- Input Current (mA)
I
F
- Input Current (mA)
Figure 1. Output Voltage vs. Input Current
(Inverters)
Figure 2. Output Voltage vs. Input Current
(Buffers)
10
Black Shield
Black Shield
d
0
1.6
I
F(ON)
- Normalized Threshold Current
I
F
- Normalized Threshold Current
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Normalized to:
Turn ON Threshold
V
CC
= 5V
T
A
= 25˚C
I
F (ON)
+
E
D
+
d
0
I
F (OFF)
1
Normalized to:
V
CC
= 5V
I
F
= 20mA Pulsed
Pulse Width = 100µs
Duty Cycle = 0.1%
0
1
2
3
4
5
6
7
8
0
2
4
6
8
10
12
14
16
d - Distance (mm)
V
CC
- Supply Voltage (V)
Figure 3. Normalized Threshold Current
vs. Shield Distance
Figure 4. Normalized Threshold Current
vs. Supply Voltage
©2004 Fairchild Semiconductor Corporation
H21L Series Rev. 1.1.0
www.fairchildsemi.com
5
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