HCPL-3700 AC/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
