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
(T
A
= 25
o
C unless otherwise noted)
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +100
o
C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +100
o
C
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 sec. with soldering
iron] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
o
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, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Duration of Output Short To V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 25
o
C.
(3) Derate linearly 2.50 mW/
o
C above 30
o
C.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
12-56
(972)323-2200
Fax (972)323-2396
OPTEK [ OPTEK TECHNOLOGIES ]
