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4

Document Number 83736

Rev. 1.4, 26-Jan-05

4N32/ 4N33

Vishay Semiconductors

Figure 3. Normalized Collector-Base Photocurrent vs. LED

Current

Figure 4. Non-Saturated and Saturated HFE vs. Base Current

Figure 5. Low to High Propagation Delay vs. Collector Load

Resistance and LED Current

i4n32-33_04

.1

1

1 0

100

.001

.01

.1

1

10

IF - LED Current - mA

Ta = 25°C

Vcb = 3.5 V

IF = 10 mA

Normalized to:

i4n32-33_05

.01

.1

1

10

100

0

2000

4000

6000

8000

10000

Vce = 5 V

Vce = 1 V

Ib - Base Current -

µA

Ta=25°C

i4n32-33_06

0

5

10

15

20

0

20

40

60

80

Ta = 25°C, Vcc = 5V

Vth = 1.5 V

220

Ω

ıˇ

470

Ω

IF - LED Current - mA

100

Ω

1.0 k

Ω

Figure 6. High to low Propagation Delay vs. Collector Load

Resistance and LED Current

Figure 7. Switching Waveform and Switching Schematic

i4n32-33_07

0

5

10

15

20

0

5

10

15

20

100

Ω

1k

Ω

IF - LED Current - mA

Ta=25°C

Vcc = 5 V

Vth = 1.5 V

i4n32-33_08

IF

tR

VO

tD

tS

tF

tPHL

tPLH

VTH=1.5 V

VO

RL

VCC

IF