©2003 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD050L, FOD250L, FOD053L Rev. 1.0.2 4
FOD050L, FOD250L, FOD053L — LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers
Electrical Characteristics
(Continued) (T
A
= 0 to 70°C unless otherwise specified.)
Switching Characteristics
(V
CC
= 3.3V)
Isolation Characteristics
*All Typicals at T
A
= 25°C
Notes:
2. The 1.9k
Ω
load represents 1 TTL unit load of 1.6mA and 5.6k
Ω
pull-up resistor.
3. The 4.1k
Ω
load represents 1 LSTTL unit load of 0.36mA and 6.1k
Ω
pull-up resistor.
4. Common mode transient immunity in logic high level is the maximum tolerable (positive) dV
cm
/dt on the leading
edge of the common mode pulse signal V
CM
, to assure that the output will remain in a logic high state
(i.e., V
O
> 2.0V). Common mode transient immunity in logic low level is the maximum tolerable (negative)
dV
cm
/dt on the trailing edge of the common mode pulse signal, V
CM
, to assure that the output will remain in a
logic low state (i.e., V
O
< 0.8V).
5. Device is considered a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are
shorted together.
Symbol Parameter Test Conditions Device Min. Typ.** Max. Unit
T
PHL
Propagation Delay
Time to Logic LOW
R
L
= 1.9k
Ω
, I
F
= 16mA
(2)
(Fig. 10)
25°C All 1.0 µs
2.0
T
PLH
Propagation Delay
Time to Logic HIGH
R
L
= 1.9k
Ω
, I
F
= 16mA
(2)
(Fig. 10)
25°C All 1.0 µs
2.0
|CM
H
| Common Mode
Transient Immunity
at Logic HIGH
I
F
= 0mA, V
CM
= 1,000V
P-P
,
R
L
= 4.1k
Ω
, T
A
= 25°C
(3,4)
(Fig. 11)
All 5,000 50,000 V/µs
I
F
= 0mA, V
CM
= 1,000V
P-P
,
T
A
= 25°C, R
L
= 1.9kΩ
(2,4)
(Fig. 11)
5,000 50,000 V/µs
|CM
L
| Common Mode
Transient Immunity
at Logic LOW
I
F
= 16mA, V
CM
= 1,000V
P-P
,
R
L
= 4.1kΩ. T
A
= 25°C
(3,4)
(Fig. 11)
All 5,000 35,000 V/µs
I
F
= 16mA, V
CM
= 1,000 V
P-P
,
R
L
= 1.9kΩ
(2,4)
(Fig. 11)
5,000 35,000 V/µs
Symbol Characteristics Test Conditions Device Min. Typ.** Max. Unit
I
I-O
Input-Output
Insulation Leakage
Current
Relative humidity = 45%,
T
A
= 25°C, t = 5s,
V
I-O
= 3000VDC
(5)
All 1.0 µA
V
ISO
Withstand Insulation
Test Voltage
f = 60Hz, T
A
= 25°C,
t = 1 min.
(5)
FOD050L
FOD053L
2500 V
RMS
FOD250L 5000
R
I-O
Resistance
(input to output)
V
I-O
= 500VDC
(5)
All 10
11
10
12
Ω
C
I-O
Capacitance
(input to output)
f = 1MHz
(5)
All 0.2 pF