www.vishay.com

6

Document Number 83621

Rev. 1.5, 26-Oct-04

IL30/ 31/ 55/ ILD30/ 31/ 55/ ILQ30/ 31/ 55

Vishay Semiconductors

Figure 5. HFE Current Gain vs. Base Current

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

Resistance and LED Current

Figure 7. High to low Propagation Delay vs. Collector Load

Resistance and LED Current

iil30_05

.01

.1

1

10

100

12000

10000

8000

6000

4000

2000

0

Base Current

iil30_06

0

5

10

15

20

0

20

40

60

80

Vcc=5V

Vth = 1.5 V

220

Ω

ıˇ

470

Ω

IF - LED Current - mA

100

Ω

1.0 k

Ω

iil30_07

0

5

10

15

20

0

5

10

15

20

100

Ω

1k

Ω

IF - LED Current - mA

Vcc = 5 V

Vth = 1.5 V

Figure 8. Switching Waveform

Figure 9. Switching Schematic

iil30_08

IF

tR

VO

tD

tS

tF

tPHL

tPLH

VTH=1.5 V

iil30_09

VO

RL

VCC =13.5 V

IF=50 mA

F=10 KHz,

DF=50%