AC/DC TO LOGIC INTERFACE
OPTOCOUPLER
HCPL-3700
DESCRIPTION
The HCPL-3700 voltage/current threshold detection optocoupler consists of
an AlGaAs LED connected to a threshold sensing input buffer IC which are
optically coupled to a high gain darlington output. The input buffer chip is
capable of controlling threshold levels over a wide range of input voltages
with a single resistor. The output is TTL and CMOS compatible.
8
1
FEATURES
•
•
•
•
AC or DC input
Programmable sense voltage
Logic level compatibility
Threshold guaranteed over temperature
(0°C to 70°C)
• Optoplanar™ construction for high common
mode immunity
• UL recognized (file # E90700)
TRUTH TABLE
(Positive Logic)
Input
H
L
Output
L
H
8
1
8
1
APPLICATIONS
•
•
•
•
•
•
Low voltage detection
5 V to 240 V AC/DC voltage sensing
Relay contact monitor
Current sensing
AC/DC
Microprocessor Interface
POWER
Industrial controls
A 0.1 µF bypass capacitor
must be connected between
pins 8 and 5.
AC
1
8
7
6
5
V
CC
NC
V
O
GND
DC+ 2
R
X
HCPL-3700
LOGIC
DC-
AC
3
4
GND 1
GND 2
ABSOLUTE MAXIMUM RATINGS
Parameter
Storage Temperature
Operating Temperature
Lead Solder Temperature
EMITTER
Input Current
Average
Surge
Transient
Input Voltage (Pins 2-3)
Input Power Dissipation
Total Package Power Dissipation
DETECTOR
Output Current
Supply Voltage
Output Voltage
(Average)
(Pins 8-5)
(Pins 6-5)
(No derating required up to 70°C)
Symbol
T
STG
T
OPR
T
SOL
Value
-55 to +125
-40 to +85
260 for 10 sec
50 (MAX)
140 (MAX)
500 (MAX)
V
IN
(Note 1)
(Note 2)
(Note 3)
P
IN
P
T
I
O
V
CC
V
O
(Note 4)
P
O
-0.5 (MIN)
230 (MAX)
305 (MAX)
30 (MAX)
-0.5 to 20
-0.5 to 20
210 (MAX)
V
mW
mW
mA
V
V
mW
Units
°C
°C
°C
mA
3 ms, 120 Hz Pulse Rate
10 µs, 120 Hz Pulse Rate
I
IN
Output Power Dissipation
200003A
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
