Datasheet

©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC205M, MOC206M, MOC207M Rev. 1.0.2 5
MOC205M, MOC206M, MOC207M — Small Outline Optocouplers Transistor Output
Typical Performance Curves
(Continued)
Figure 12. Switching Time Test Circuit and Waveforms
NORM
Figure 10. Normalized t
on
vs. R
BE
Figure 11. Normalized t
off
vs. R
BE
Figure 9. CTR vs. R
BE
(Saturated)
R
BE
–
R
BE
–
BASE RESISTANCE (kΩ)
10 100 1000
NORMALIZED CTR
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
I
F
= 20 m A
I
F
= 10 m A
I
F
= 5 mA
V
CE
= 0.3 V, T
A
= 25°C
Normalized to:
CTR at R
BE
= Open
BASE RESISTANCE (MΩ )
(M
Ω)
0.01 0.1 1 10 100
ALIZED t
on
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
V
CC
= 10 V
I
C
= 2 mA
R
L
= 100Ω
NORMALIZED TO :
t
on
AT R
BE
= OPEN
R
BE
– BASE RESISTANCE
0.01 0.1 1 10 100
NORMALIZED t
offf
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
V
CC
= 10 V
I
C
= 2 mA
R
L
= 100 Ω
NORMALIZED TO :
t
offf
AT R
BE
= OPEN
OUTPUT PULSE
INPUT PULSE
TEST CIRCUIT
t
r
t
f
INPUT
I
F
R
L
R
BE
V
CC
= 10 V
OUTPUT
t
on
10%
90%
t
off
I
C
Adjust
I
F to produce
I
C = 2 mA
WAVEFORMS