©1983 Fairchild Semiconductor Corporation www.fairchildsemi.com
MCT5201M, MCT5210M, MCT5211M Rev. 1.1.3 5
MCT5201M, MCT5210M, MCT5211M — Low Input Current Phototransistor Optocouplers
Notes:
1. DC Current Transfer Ratio (CTR
CE
) is defined as the transistor collector current (I
CE
) divided by the input LED
current (I
F
) x 100%, at a specified voltage between the collector and emitter (V
CE
).
2. The collector base Current Transfer Ratio (CTR
CB
) is defined as the transistor collector base photocurrent(I
CB
)
divided by the input LED current (I
F
) time 100%.
3. Referring to Figure 14 the T
PHL
propagation delay is measured from the 50% point of the rising edge of the data
input pulse to the 1.3V point on the falling edge of the output pulse.
4. Referring to Figure 14 the T
PLH
propagation delay is measured from the 50% point of the falling edge of data input
pulse to the 1.3V point on the rising edge of the output pulse.
5. Delay time (t
d
) is measured from 50% of rising edge of LED current to 90% of Vo falling edge.
6. Rise time (t
r
) is measured from 90% to 10% of Vo falling edge.
7. Storage time (t
s
) is measured from 50% of falling edge of LED current to 10% of Vo rising edge.
8. Fall time (t
f
) is measured from 10% to 90% of Vo rising edge.
9. C
ISO
is the capacitance between the input (pins 1, 2, 3 connected) and the output, (pin 4, 5, 6 connected).
10. Device considered a two terminal device: Pins 1, 2, and 3 shorted together, and pins 5, 6 and 7 are shorted
together.
