DC Characteristics Test Conditions Symbol Min Typ Max Units
COUPLED
CTR
DC current Transfer Ratio (note 1)
V
CE
= 10 V, I
F
= 10 mA 15 35 %
Saturation Voltage
I
C
= 500 µA, I
F
= 10 mA
V
CE(SAT)
0.1
V
I
C
= 2 mA, I
F
= 50 mA
0.2 0.5
AC Characteristics Test Conditions Symbol Min Typ Max Units
Capacitance LED to Detector 1.8 pF
Bandwidth (Fig. 5)
Note 2 300 kHz
Rise Time and Fall Time (see operating schematic)
I
C
= 2 mA, V
CE
= 10 V, Note 3
2 µs
TRANSFER CHARACTERISTICS
(T
A
= 25°C Unless otherwise specified.)
PHOTOTRANSISTOR OPTOCOUPLER
MCT4
DS300241 8/13/01 3 OF 6 www.fairchildsemi.com
NOTE:
1. The current transfer ratio (I
C
/I
F
) is the ratio of the detector collector current to the LED input current with V
CE
at 10 volts.
2. The frequency at which i
c
is 3 dB down from the 1 kHz value.
3. Rise time (t
r
) is the time required for the collector current to increase from 10% of its final value, to 90%. Fall time (t
f
) is the time required
for the collector current to decrease from 90% of its initial value to 10%.
Characteristic Test Conditions Symbol Min Typ Max Units
Isolation Resistance
V
= 500 VDC
R
ISO
10
11
10
12
!
Breakdown Voltage Time = 1 sec
1000
1500
VDC
ISOLATION CHARACTERISTICS
