HCPL-2731 Datasheet, PDF (9/15 Pages) Fairchild Semiconductor – LOW INPUT CURRENT HIGH GAIN SPLIT DARLINGTON OPTOCOUPLERS

Fig. 16 Logic Low Supply Current vs.
Input Diode Forward Current
(6N138 / 6N139 Only)
4.0
3.5
3.0
2.5
V_CC = 5 V
2.0
V_CC = 18 V
1.5
1.0
0.5
0.0
0
2
4
6
8
10
12
14
16
I_F - FORWARD CURRENT (mA)
Fig. 18 Propagation Delay vs. Input Diode Forward Current
(6N138 / 6N139 Only)
70
V_CC = 5 V
T_A = 25˚C
60
50
(t_PHL) R_L = 2.2 kΩ or 4.7 kΩ
40
30
20
(t_PLH) R_L = 4.7 kΩ
10
(t_PLH) R_L = 2.2 kΩ
0
0
1
2
3
4
5
6
7
8
9
10
I_F - INPUT DIODE FORWARD CURRENT - mA
Fig. 20 Propagation Delay to Logic Low vs. Pulse Period
(6N138 / 6N139 Only)
100
6N139
I_F = 0.5 mA
R_L = 4.7 kΩ
10
Fig. 17 Logic Low Supply Current vs.
Input Diode Forward Current
(HCPL-2730 / HCPL-2731 Only)
100
T_A = 25˚C
HCPL-2731
V_CC = 18 V
10
HCPL-2730
HCPL-2731
V_CC = 7 V
1
0.1
0.1
1
10
100
I_F - INPUT DIODE FORWARD CURRENT - mA
Fig. 19 Propagation Delay vs. Input Diode Forward Current
(HCPL-2730 / HCPL-2731 Only)
70
V_CC = 5 V
T_A = 25˚C
60
50
(t_PHL) R_L = 2.2 kΩ or 4.7 kΩ
40
30
(t_PLH) R_L = 4.7 kΩ
20
(t_PLH) R_L = 2.2 kΩ
10
0
0
2
4
6
8
10
I_F - INPUT DIODE FORWARD CURRENT - mA
Fig. 21 Propagation Delay to Logic Low vs. Pulse Period
(HCPL-2730 / HCPL-2731 Only)
100
HCPL-2731
I_F = 0.5 mA
10
R_L = 4.7 kΩ
6N138
I_F = 1.6 mA
R_L = 2.2 kΩ
1
1
T_A = 25˚C
0.1
0.1
0.01
0.1
1
10
0.01
T - INPUT PULSE PERIOD - ms
HCPL-2730
HCPL-2731
I_F =1.6 mA
R_L = 2.2kΩ
T_A = 25˚C
0.1
1
10
T - INPUT PULSE PERIOD - ms
9
Single-Channel: 6N138, 6N139 Dual-Channel: HCPL-2730, HCPL-2731 Rev. 1.0.0
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