OPTEK OPB687

Product Bulletin OPB685
July 1996
Photologic® Optical Flag Switch
Types OPB685, OPB686, OPB687, OPB688
Features
• Photologic® output
• Four output options
• Mechanical switch replacement
• Printed circuit board mounting
Description
The OPB685 series flag switches consist
of an infrared emitting diode and a
monolithic integrated circuit, which
incorporates a photodiode, a linear
amplifier and a Schmitt trigger. A lever
arm actuated flag interrupts the light
beam switching the output between
states that can readily drive logic gates.
Customized lever arms and spring
torques can be designed for specific
applications.
The device features TTL/LSTTL
compatible logic level output which can
drive up to 10 TTL loads over a voltage
range from 4.5 V to 16 V.
Absolute Maximum Ratings (TA = 25o C unless otherwise noted)
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40o C to +100o C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40o C to +100o C
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 sec. with soldering
iron] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240o C
Input Diode
Forward DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Peak Forward Current (1µs pulse width, 300 pps) . . . . . . . . . . . . . . . . . . . . . . . . 3.0 A
Reverse DC Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW(2)
Output Photologic®
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Duration of Output Short To VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.00 sec
Voltage at Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Low Level Output Current (sinking) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 mA
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 mW(3)
Notes:
(1) RMA flux is recommended. Duration can be extended to 10 sec. max. when flow soldering.
(2) Derate linearly 1.33 mW/o C above 25o C.
(3) Derate linearly 2.50 mW/o C above 30o C.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
12-56
(972)323-2200
Fax (972)323-2396
Types OPB685, OPB686, OPB687, OPB688
Electrical Characteristics (TA = 25o C unless otherwise noted)
SYMBOL
Input Diode
PARAMETER
MIN
TYP MAX UNITS
TEST CONDITIONS
VF
Forward Voltage
1.6
V
IF = 10 mA
IR
Reverse Current
100
µA
VR = 3.0 V
16.0
V
mA
Output Photologic® Sensor
VCC
Operating D.C. Supply Voltage
IF(+)
LED Positive-Going Threshold Current
0.1
1.8
10.0
Hysteresis Ratio
1.05
1.20
1.60
IF(+)/IF(-)
ICCH
ICCL
VOH
IOH
VOL
tr, tf
tPLH
tPHL
4.5
VCC = 5.0 V
VCC = 5.0 V
High Level Supply Current:
Buffer, 10K Pull-up
Buffer, Open-Collector
Inverter, 10K Pull-up
Inverter, Open-Collector
OPB685
OPB686
OPB687
OPB688
5.0
12.0
mA
VCC = 16 V, No Load On Output,
IF = 10 mA
4.0
12.0
mA
VCC = 16 V, No Load On Output,
IF = 0 mA
Low Level Supply Current:
Buffer, 10K Pull-up
Buffer, Open-Collector
Inverter, 10K Pull-up
Inverter, Open-Collector
OPB685
OPB686
OPB687
OPB688
5.5
4.0
6.5
5.0
12.0
12.0
12.0
12.0
mA
VCC = 16 V, No Load On Output,
IF = 0 mA
mA
VCC = 16 V, No Load On Output,
IF = 10 mA
High Level Output Voltage:
Buffer, 10K Pull-up
Inverter, 10K Pull-up
(5)
OPB685 (VCC-1.5)
OPB687 (VCC-1.5)(5)
High Level Output Current:
Buffer, Open-Collector
Inverter, Open-Collector
OPB686
OPB688
Low Level Output Voltage:
Buffer, 10K Pull-up
OPB685
Buffer, Open-Collector
OPB686
Inverter, 10K Pull-up
OPB687
Inverter, Open-Collector
OPB688
Output Rise Time, Output Fall Time
Propagation Delay, Low-High
Buffer, 10K Pull-up
Buffer, Open-Collector
Inverter, 10K Pull-up
Inverter, Open-Collector
Propagation Delay, High-Low
Buffer, 10K Pull-up
Buffer, Open-Collector
Inverter, 10K Pull-up
Inverter, Open-Collector
OPB685
OPB686
OPB687
OPB688
OPB685
OPB686
OPB687
OPB688
V
IOH = 100 µA, IF = 10 mA
V
IOH = 100 µA, IF = 0 mA(4)
100
100
µA
µA
VCC = 16 V, VOH = 30 V, IF = 10 mA
VCC = 16 V, VOH = 30 V, IF = 0 mA
0.4
V
VCC = 4.5 V, IOL = 16 mA, IF = 0 mA(4)
0.4
V
VCC = 4.5 V, IOL = 16 mA, IF = 10 mA
30
ns
1.0
µs
2.0
µs
2.0
µs
1.0
µs
VCC = 5 V, IF = 0 or 10 mA, f = 10 kHz,
D.C. = 50%, RL = 300 Ω
(4) Normal application would be with light source blocked, simulated by IF = 0mA.
(5) VOH = VCC-1.5V for VCC = 4.5V to 16V.
Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
(972)323-2200
Fax (972)323-2396
12-57
Types OPB685, OPB686, OPB687, OPB688
Typical Performance Curves
Switching Time vs Ambient
Temperature
Rise Time vs Output Load vs
Ambient Temperature
VCC = 5 V
IF = 0 or 10 mA
f = 10 kHz
DC = 50%
tf
tr
RL = 2Ω *
* - Equivalent Output Load
Including Pull-up if Applicable
VCC = 5 V
IF = 0 or 10 mA
f = 10 KHz
D.C. = 50%
RL = 300 Ω
RL = 1Ω*
RL = 390*
RL = 300 Ω*
TA - Ambient Temperature - oC
TA - Ambient Temperature - oC
Typical Thermal Derating Curve
Safe Operating
Area
No Heat Sink;
Derate 2.50 mW/o C
Above 30o C
TA - Ambient Temperature - oC
Schematics
OPB685...Buffer/10K PU
OPB686...Buffer/OC
VCC
OUT
A
K
VCC
GND K
OPB687...Inverter/10K PU
K
GND
OPB688...Inverter/OC
VCC
A
OUT
A
VCC
OUT
A
GND
K
OUT
GND
Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
(972)323-2200
Fax (972)323-2396
12-59
Types OPB685, OPB686, OPB687, OPB688
Typical Performance Curves
Normalized Forward Voltage vs
Ambient Temperature
Forward Current vs Forward
Voltage Input Diode
Trigger Current vs Ambient
Temperature
VCE = 5 V
IF = 5 mA
Normalized to
TA = 25o C
ITLH
ITHL
IF @ 500 ms pulse width
VCC = 5 V
Output Unloaded
TA - Ambient Temperature - oC
IF - Forward Current - mA
TA - Ambient Temperature - oC
Normalized Supply Current vs
Ambient Temperature
OPB685, OPB687 Normalized
High Level Output Voltage vs
Ambient Temperature
OPB686, OPB688 High Level
Output Current vs Ambient
Temperature
VCC = 16 V
IOH = 100 µA
VCC = 16 V
VOH = 30 V
ICCH, ICCL
IOH
VOH
VCC = 5 V
Output Unloaded
TA - Ambient Temperature - oC
TA - Ambient Temperature - oC
TA - Ambient Temperature - oC
Low Level Output Voltage vs
Ambient Temperature
OPB685, OPB686 Propagation
Delay vs Ambient Temperature
OPB687, OPB688 Propagation
Delay vs Ambient Temperature
tPHL
VOL
tPLH
tPLH
VCC = 4.5 V
IOL = 16 mA
TA - Ambient Temperature - oC
Optek Technology, Inc.
1215 W. Crosby Road
tPHL
VCC = 5 V
IF = 0 or 10 mA
f = 10 kHz
DC = 50%
RL = 300 Ω
TA - Ambient Temperature - oC
Carrollton, Texas 75006
12-58
VCC = 5 V
IF = 0 or 10 mA
f = 10 kHz
DC = 50%
RL = 300 Ω
TA - Ambient Temperature - oC
(972) 323-2200
Fax (972) 323-2396