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
10/22/99
200003A
AC/DC TO LOGIC INTERFACE
OPTOCOUPLER
HCPL-3700
ELECTRICAL CHARACTERISTICS
Parameter
Input Threshold Current
(T
A
= 0°C to 70°C Unless otherwise specified)
Symbol
I
TH+
I
TH-
V
TH+
Min
1.96
1.00
3.35
Typ
2.4
1.2
3.8
Max
3.11
1.62
4.05
Unit
mA
mA
V
Test Conditions
(V
IN
= V
TH+
, V
CC
= 4.5 V)
(V
O
= 0.4 V, I
O
!
4.2 mA) (Note 5)
(V
IN
= V
2
- V
3
, Pins 1 & 4 Open)
(V
CC
= 4.5 V, V
O
= 0.4 V)
(Note 5) (I
O
!
4.2 mA)
(V
IN
= V
2
- V
3
, Pins 1 & 4 Open)
(V
CC
= 4.5 V, V
O
= 2.4 V)
(Note 5) (I
O
"
100 µA)
(V
IN
=
#
V
1
- V
4
#
)
(Pins 2 & 3 Open)
(V
CC
= 4.5 V, V
O
= 0.4 V)
(Note 5) (I
O
!
4.2 mA)
(V
IN
=
#
V
1
- V
4
#
)
(Pins 2 & 3 Open)
(V
CC
= 4.5 V, V
O
= 2.4 V)
(Note 5) (I
O
"
100 µA)
(I
HYS
= I
TH+
- I
TH-)
(V
HYS
= V
TH+
- V
TH-)
(V
IHC1
= V
2
- V
3
, V
3
= GND)
(I
IN
= 10 mA, Pins 1 & 4
Connected to Pin 3)
(V
IHC2
=
#
V
1
- V
4
#
)
(
#
I
IN
#
= 10 mA)
(Pins 2 & 3 Open)
(V
IHC3
= V
2
- V
3
, V
3
= GND)
(I
IN
= 15 mA; Pins 1 & 4 Open)
(V
ILC
= V
2
- V
3
, V
3
= GND)
(I
IN
= -10 mA)
(V
IN
= V
2
- V
3
= 5.0 V)
(Pins 1 & 4 Open)
(I
IN
= 3 mA)
(I
IN
= 3 mA)
(V
CC
= 4.5 V; I
OL
= 4.2 mA)
(Note 5)
(Note 5) (V
OH
= V
CC
= 18 V)
(V
2
- V
3
= 5.0 V; V
O
= Open)
(V
CC
= 5 V)
(V
CC
= 18 V; V
O
= Open)
(f = 1 MHz; V
IN
= 0V)
(Pins 2 & 3, Pins 1 & 4 Open)
DC
(Pins 2,3)
Input
Threshold
Voltage
AC
(Pins 1,4)
V
TH-
2.01
2.5
2.86
V
V
TH+
4.23
5.0
5.50
V
V
TH-
2.87
3.7
4.20
V
Hysteresis
I
HYS
V
HYS
V
IHC1
5.4
1.2
1.3
6.3
6.6
mA
V
V
V
IHC2
V
IHC3
V
ILC
I
IN
V
D1,2
V
D3,4
V
OL
I
OH
I
CCL
I
CCH
C
IN
6.1
7.0
7.3
V
Input Clamp Voltage
12.5
-0.75
3.0
3.7
0.65
0.65
0.04
13.4
V
V
Input Current
Bridge Diode
Forward Voltage
Logic Low Output Voltage
Logic High Output Current
Logic Low Supply Current
Logic High Supply Current
Input Capacitance
4.4
mA
V
V
0.4
100
V
µA
mA
µA
pF
1.0
0.01
50
4
4
10/22/99
200003A
AC/DC TO LOGIC INTERFACE
OPTOCOUPLER
HCPL-3700
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Operating Temperature
Operating Frequency
Symbol
V
CC
T
A
f
Min
2
0
0
Max
18
70
4
Units
V
°C
kHz
SWITCHING CHARACTERISTICS
AC Characteristics
Propagation Delay Time
(to Output Low Level)
Propagation Delay Time
(to Output High Level)
Output Rise Time (10-90%)
Output Fall Time (90-10%)
Common Mode Transient Immunity
(at Output High Level)
(T
A
= 25°C, V
CC
= 5 V Unless otherwise specified)
Test Conditions
Symbol
T
PHL
T
PLH
t
r
t
f
#CM
H
#
Min
Typ
6.0
25.0
45
0.5
4000
Max
15
40
Unit
µs
µs
µs
µs
V/µs
(R
L
= 4.7 k$, C
L
= 30 pF)
(Note 6)
(R
L
= 4.7 k$, C
L
= 30 pF)
(Note 6)
(R
L
= 4.7 k$, C
L
= 30 pF)
(R
L
= 4.7 k$, C
L
= 30 pF)
(I
IN
= 0 mA,R
L
= 4.7 k$)
(Notes 7,8)
(V
O min
= 2.0 V, V
CM
= 1400 V)
Common Mode Transient Immunity (I
N
= 3.11 mA,R
L
= 4.7 k$)
(at Output Low Level)
(V
O max
= 0.8 V, V
CM
= 140 V)
(Notes 7,8)
#CM
L
#
600
V/µs
PACKAGE CHARACTERISTICS
Characteristics
Withstand Insulation Voltage
Resistance (input to output)
Capacitance (input to output)
(T
A
= 0°C to 70°C Unless otherwise specified)
Test Conditions
Symbol
V
ISO
R
I-O
C
I-O
Min
2500
10
12
0.6
Typ
Max
Unit
V
RMS
$
pF
(Relative humidity < 50%)
(T
A
= 25°C, t = 1 min)
(Notes 9,10)
(Note 9) (V
IO
= 500 Vdc)
(f = 1 MHz, V
IO
= 0 Vdc)
10/22/99
200003A
AC/DC TO LOGIC INTERFACE
OPTOCOUPLER
HCPL-3700
NOTES
1.
2.
3.
4.
5.
6.
Derate linearly above 70°C free-air temperature at a rate of 1.8 mW/°C.
Derate linearly above 70°C free-air temperature at a rate of 2.5 mW/°C.
Derate linearly above 70°C free-air temperature at a rate of 0.6 mA/°C.
Derate linearly above 70°C free-air temperature at a rate of 1.9 mW/°C.
Logic low output level at pin 6 occurs when V
IN
!V
TH+
and when V
IN
%V
TH-
once V
IN
exceeds V
TH+
. Logic high output level at pin 6
occurs when V
IN
"V
TH-
and when V
IN
&V
TH+
once V
IN
decreases below V
TH-.
T
PHL
propagation delay is measured from the 2.5 V level of the leading edge of a 5.0 V input pulse (1 µs rise time) to the 1.5 V level
on the leading edge of the output pulse. T
PLH
propagation delay is measured on the trailing edges of the input and output pulse.
(Refer to Fig. 9)
Common mode transient immunity in logic high level is the maximum tolerable (positive) dV
cm
/dt on the leading edge of the
common mode pulse signal V
CM
, to assure that the output will remain in a logic high state (i.e., V
O
%2.0
V). Common mode transient
immunity in logic low level is the maximum tolerable (negative) dV
cm
/dt on the trailing edge of the common mode pulse signal, V
CM
,
to assure that the output will remain in a logic low state (i.e., V
O
&0.8
V). (Refer to Fig.10)
In applications where dV
cm
/dt may exceed 50,000 V/µs (Such as static discharge), a series resistor, R
CC
, should be included to
protect the detector chip from destructive surge currents. The recommended value for R
CC
is 240
$
per volt of allowable drop in
V
CC
(between pin 8 and V
CC
) with a minimum value of 240
$.
Device is considered a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are shorted together.
The 2500 V
RMS
/1 min. capability is validated by a 3.0 kV
RMS
/1 sec. dielectric voltage withstand test.
AC voltage is instantaneous voltage.
All typicals at T
A
= 25°C, V
CC
= 5 V unless otherwise specified.
7.
8.
9.
10.
11.
12.
10/22/99
200003A
AC/DC TO LOGIC INTERFACE
OPTOCOUPLER
HCPL-3700
Fig. 1 Logic Low Supply Current vs. Operating Supply Voltage
I
CCL
- LOGIC LOW SUPPLY CURRENT (mA)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
-5
0.0
4
6
8
10
12
14
16
18
20
-10
0
50
Fig. 2 Input Current vs. Input Voltage
45 DC (Pins 1,2 shorted together
pins 3,4 shorted together)
40
I
IN
- INPUT CURRENT (mA)
DC (Pins 1 & 4 Open)
35
30
25
20
15
10
5
0
AC (pins 2 & 3 Open)
2
4
6
8
10
12
14
V
CC
- OPERATING SUPPLY VOLTAGE (V)
V
IN
- INPUT VOLTAGE (V)
Fig. 3 Input Current/Low Level Output Voltage
vs. Temperature
4.2
4.0
3.8
120
4.2
Fig. 4 Current Threshold/Voltage Threshold
vs. Temperature
3.2
V
TH
(DC) - VOLTAGE THRESHOLD (V)
110
100
90
I
IN
V
IN
= 5.0 V
(PINS 2 and 3)
V
CC
= 5.0 V
80
70
60
50
40
V
OL
V
CC
= 5.0 V
I
OL
= 4.2 mA
30
20
10
-20
0
25
45
65
0
85
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
-40
-20
0
25
45
65
85
I
TH
-
V
TH
-
I
TH
+
V
TH
+
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
Input Current, I
IN
(mA)
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
-40
T
A
- TEMPERATURE (˚C)
T
A
- TEMPERATURE (˚C)
Fig. 5 Propagation Delay vs. Temperature
70
100
90
60
80
Fig. 6 Rise and Fall Time vs. Temperature
0.8
0.7
0.6
T
P
- PROPAGATION DELAY (µs)
Tf
Tr - RISE TIME (µs)
40
TPLH
30
TPHL
20
60
50
40
30
0.5
0.4
0.3
0.2
20
10
10
0
-60
0
-40
Tr
0.1
0.0
-20
0
25
45
65
85
-40
-20
0
20
40
60
80
100
T
A
- TEMPERATURE (˚C)
T
A
- TEMPERATURE (˚C)
10/22/99
200003A
Tf - FALL TIME (µs)
50
70
I
TH
(DC) - CURRENT THRESHOLD (mA)
4.0
3.0
V
OL
(mV)
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