PHOTOTRANSISTOR OPTOCOUPLERS
CNY17-1
CNY17-2
Fig. 7 CTR vs. RBE (Saturated)
(Black Package)
NORMALIZED CTR ( CTR
RBE
/ CTR
RBE(OPEN)
)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
10
100
1000
I
F
= 5 mA
I
F
= 10 mA
I
F
= 20 mA
V
CE
= 0.3 V
CNY17-3
CNY17-4
Fig. 8 CTR vs. RBE (Saturated)
(White Package)
NORMALIZED CTR ( CTR
RBE
/ CTR
RBE(OPEN)
)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
10
100
1000
I
F
= 5 mA
I
F
= 10 mA
I
F
= 20 mA
V
CE
= 0.3 V
R
BE
- BASE RESISTANCE (k
Ω)
R
BE
- BASE RESISTANCE (k
Ω)
Fig. 9 Switching Speed vs. Load Resistor
(Black Package)
1000
I
F
= 10 mA
V
CC
= 10 V
T
A
= 25˚C
1000
Fig. 10 Switching Speed vs. Load Resistor
(White Package)
I
F
= 10 mA
V
CC
= 10 V
T
A
= 25˚C
100
SWITCHING SPEED - (µs)
100
SWITCHING SPEED - (µs)
T
off
T
f
10
T
off
T
f
10
T
on
1
T
on
1
T
r
T
r
0.1
0.1
1
10
100
0.1
0.1
1
10
100
R-LOAD RESISTOR (kΩ)
R-LOAD RESISTOR (kΩ)
Fig. 11 Normalized t
on
vs. R
BE
(Black Package)
5.0
5.0
V
CC =
10 V
I
C
= 2 mA
R
L
= 100
Ω
Fig. 12 Normalized t
on
vs. R
BE
(White Package)
NORMALIZED t
on
- (t
on(R
BE
)
/ t
on(open)
)
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
10
100
1000
NORMALIZED t
on
- (t
on(R
BE
)
/ t
on(open)
)
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
V
CC =
10 V
I
C
= 2 mA
R
L
= 100
Ω
10000
100000
10
100
1000
10000
100000
R
BE
- BASE RESISTANCE (k
Ω)
R
BE
- BASE RESISTANCE (k
Ω)
DS300208
6/06/01
5 OF 11
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