LOW INPUT CURRENT
HIGH GAIN SPLIT
DARLINGTON OPTOCOUPLERS
SINGLE-CHANNEL
6N138
6N139
DUAL-CHANNEL
HCPL-2730
HCPL-2731
Fig. 16 Propagation Delay vs. Input Diode Forward Current
(6N138 / 6N139 Only)
70
VCC = 5 V
TA = 25˚C
60
50
(tPHL) RL = 2.2 kΩ or 4.7 kΩ
40
30
20
(tPLH) RL = 4.7 kΩ
10
(tPLH) RL = 2.2 kΩ
0
0
1
2
3
4
5
6
7
8
9
10
IF - INPUT DIODE FORWARD CURRENT - mA
Fig. 18 Propagation Delay to Logic Low vs. Pulse Period
(6N138 / 6N139 Only)
100
6N139
IF = 0.5 mA
RL = 4.7 kΩ
10
Fig. 17 Propagation Delay vs. Input Diode Forward Current
(HCPL-2730 / HCPL-2731 Only)
70
VCC = 5 V
TA = 25˚C
60
50
(tPHL) RL = 2.2 kΩ or 4.7 kΩ
40
30
(tPLH) RL = 4.7 kΩ
20
(tPLH) RL = 2.2 kΩ
10
0
0
2
4
6
8
10
IF - INPUT DIODE FORWARD CURRENT - mA
Fig. 19 Propagation Delay to Logic Low vs. Pulse Period
(HCPL-2730 / HCPL-2731 Only)
100
HCPL-2731
10
IF = 0.5 mA
RL = 4.7 kΩ
6N138
IF = 1.6 mA
RL = 2.2 kΩ
1
0.1
0.01
0.1
TA = 25˚C
1
10
T - INPUT PULSE PERIOD - ms
Fig. 20 Propagation Delay vs. Temperature
(6N138 / 6N139 Only)
50
HCPL-2730 : IF = 1.6 mA, RL = 2.2 k
HCPL-2731 : IF = 0.5 mA, RL = 4.7 k
40
tPLH (HCPL-2731)
30
20
tPLH (HCPL-2730)
10
tPHL (HCPL-2731)
tPHL (HCPL-2730)
0
0
10
20
30
40
50
60
70
80
TA - TEMPERATURE (˚C)
1
0.1
0.01
HCPL-2730
HCPL-2731
IF =1.6 mA
RL = 2.2kΩ
TA = 25˚C
0.1
1
10
T - INPUT PULSE PERIOD - ms
Fig. 21 Propagation Delay vs. Temperature
(HCPL-2730 / HCPL-2731 Only)
50
HCPL-2730 : IF = 1.6 mA, RL = 2.2 k
HCPL-2731 : IF = 0.5 mA, RL = 4.7 k
40
tPLH (HCPL-2731)
30
20
tPLH (HCPL-2730)
10
tPHL (HCPL-2731)
tPHL (HCPL-2730)
0
0
10
20
30
40
50
60
70
80
TA - TEMPERATURE (˚C)
12/27/99 200023A