4N32/ 4N33
Vishay Semiconductors
10
NIcb - Normalized Icb
Normalized to:
tpHL - High/Low Propagation
delay -
µs
20
1kΩ
15
Ta = 25°C
Vcc = 5 V
Vth = 1.5 V
1
Ta = 25°C
Vcb = 3.5 V
IF = 10 mA
.1
10
100Ω
5
.01
.001
.1
i4n32-33_04
0
0
5
10
15
20
IF - LED Current - mA
1
10
IF - LED Current - mA
100
i4n32-33_07
Figure 3. Normalized Collector-Base Photocurrent vs. LED
Current
Figure 6. High to low Propagation Delay vs. Collector Load
Resistance and LED Current
10000
HFE - Forward Transfer Gain
Ta = 25°C
Vce = 5 V
IF
VCC
RL
tD
tR
tPLH
VTH=1.5 V
tF
IF
VO
8000
6000
4000
2000
0
.01
Vce = 1 V
VO
.1
1
10
100
tPHL
tS
Ib - Base Current -
µA
i4n32-33_05
i4n32-33_08
Figure 4. Non-Saturated and Saturated HFE vs. Base Current
Figure 7. Switching Waveform and Switching Schematic
80
tpLH - Low/High Propagation
Delay -
µS
Ta = 25°C, Vcc = 5V
Vth = 1.5 V
60
1.0 kΩ
220 ıˇ
Ω
40
470
Ω
20
100
Ω
0
0
5
10
15
20
IF - LED Current - mA
i4n32-33_06
Figure 5. Low to High Propagation Delay vs. Collector Load
Resistance and LED Current
www.vishay.com
4
Document Number 83736
Rev. 1.4, 26-Jan-05
VISHAY [ VISHAY TELEFUNKEN ]
