HCPL-3700 A
C/DC to Logic Interface Optocoupler
©2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
HCPL-3700 Rev. 1.0.1
3
Electrical Characteristics
(T
A
= 0°C to 70°C Unless otherwise specified)
Note:
5. 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-
.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
TH+
Input Threshold Current
V
IN
= V
TH+
, V
CC
= 4.5 V
1.96
2.4
3.11
mA
I
TH-
V
O
= 0.4 V, I
O
≥
4.2mA
(5)
1.00
1.2
1.62
mA
V
TH+
Input Threshold
Voltage
DC
(Pins 2,3)
V
IN
= V
2
– V
3
(Pins 1 & 4 Open)
V
CC
= 4.5 V, V
O
= 0.4V
(5)
I
O
≥
4.2mA
3.35
3.8
4.05
V
V
TH-
V
IN
= V
2
- V
3
(Pins 1 & 4 Open)
V
CC
= 4.5 V, V
O
= 2.4 V
(5)
I
O
≥
100µA
2.01
2.5
2.86
V
V
TH+
AC
(Pins 1,4)
|V
IN
= V
1
– V
4
| (Pins 2 & 3 Open)
V
CC
= 4.5 V, V
O
= 0.4 V
(5)
I
O
≥
4.2 mA
4.23
5.0
5.50
V
V
TH-
|V
IN
= |V
1
- V
4
| (Pins 2 & 3 Open)
V
CC
= 4.5 V, V
O
= 2.4 V
(5)
I
O
≤
100µA
2.87
3.7
4.20
V
I
HYS
Hysteresis I
HYS
= I
TH+
– I
TH-
1.2
mA
V
HYS
V
HYS
= V
TH+
– V
TH-
1.3
V
V
IHC1
Input Clamp Voltage
V
IHC1
= V
2
- V
3
, V
3
= GND
I
IN
= 10 mA,
Pins 1 & 4 connected to Pin 3
5.4
6.3
6.6
V
V
IHC2
V
IHC2
= |V
1
– V
4
|, |I
IN
| = 10mA
(Pins 2 & 3 Open)
6.1
7.0
7.3
V
V
IHC3
V
IHC3
= V
2
– V
3
, V
3
= GND,
I
IN
= 15mA (Pins 1 & 4 Open)
12.5
13.4
V
V
ILC
V
ILC
= V
2
– V
3
, V
3
= GND,
I
IN
= -10mA
-0.75
V
I
IN
Input Current
V
IN
= V
2
– V
3
= 5.0V
(Pins 1 & 4 Open)
3.0
3.7
4.4
mA
V
D1,2
Bridge Diode
Forward Voltage
I
IN
= 3mA
0.65
V
V
D3,4
I
IN
= 3mA
0.65
V
V
OL
Logic LOW Output Voltage
V
CC
= 4.5 V, I
OL
= 4.2mA
(5)
0.04
0.4
V
I
OH
Logic HIGH Output Current
V
OH
= V
CC
= 18V
(5)
100
µA
I
CCL
Logic LOW Supply Current
V
2
– V
3
= 5.0V, V
O
= Open,
V
CC
= 5V
1.0
4
mA
I
CCH
Logic HIGH Supply Current
V
CC
= 18V, V
O
= Open
0.01
4
µA
C
IN
Input Capacitance
f = 1MHz, V
IN
= 0V
(Pins 2 & 3, Pins 1 & 4 Open)
50
pF
