MCT2, MCT2E

OPTOCOUPLERS

SOES023 – MARCH 1983 – REVISED OCTOBER 1995

3

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

TEST CIRCUIT A

PHOTOTRANSISTOR OPERATION

+

–

VCC = 10 V

Input

Output

(see Note B)

RL = 100 Ω

47

Ω

+

–

VCC = 10 V

Input

Output

(see Note B)

RL = 1 kΩ

47

Ω

tr

tf

90%

10%

90%

10%

Output

Input

0 V

TEST CIRCUIT B

PHOTODIODE OPERATION

VOLTAGE WAVEFORMS

NOTES: A. The input waveform is supplied by a generator with the following characteristics: ZO = 50 Ω, tr ≤ 15 ns, duty cycle  1%,

tw = 100 µs.

B. The output waveform is monitored on an oscilloscope with the following characteristics: tr ≤ 12 ns, Rin ≥ 1 MΩ, Cin ≤ 20 pF.

Figure 1. Switching Times