10
Switching Speci cations (AC)
Over recommended operating T
A
= -40°C to 85°C, I
F
= 5mA to 10mA, unless otherwise speci ed.
Parameter Sym. Min. Typ. Max. Units Conditions Fig. Note
Turn On Time T
ON
0.25 1.0 ms I
F
=5mA,
I
O
=200mA,
T
A
=25C
9, 13
2.0 ms I
F
=5mA, I
O
=200mA 10
Turn O Time T
OFF
0.02 0.2 ms I
F
=5mA,
I
O
=200mA,
T
A
=25C
11, 13
0.5 ms I
F
=5mA, I
O
=200mA 12
Output Transient
Rejection
dV
O
/dt 1 7
kV/s V
O
=250V,
T
A
=25C
14
Input-Output
Transient Rejection
dV
I-O
/dt 1
10 kV/s V
I-O
=1000V,
T
A
=25C
15
Notes:
1. For derating, refer to Figure 1 and 2.
2. The voltage across the output terminals of the relay should not exceed this rated withstand voltage. Over-voltage protection circuits should be
added in some applications to protect against over-voltage transients.”
3. Threshold to switch device is I
F
0.5mA, however, for quali ed device performance over temperature range, it is recommended to operate at
I
F
=5mA. Refer to application information in next section of this datasheet.
4. Device is considered as a two terminal device:
ASSR-3210 - pin 1, 2 shorted and pin 3, 4 shorted.
ASSR-3211 - pin 1, 2, 3 shorted and pin 4, 5, 6 shorted.
ASSR-3220 - pin 1, 2, 3, 4 shorted and pin 5, 6, 7, 8 shorted.
5. The Input-Output Momentary Withstand Voltage is a dielectric voltage rating that should not be interpreted as an input-output continuous
voltage rating. For the continuous voltage rating refer to the IEC/EN/DIN EN 60747-5-2 Insulation Characteristics Table (if applicable), your
equipment level safety speci cation, or Avago Technologies Application Note 1074, “Optocoupler Input-Output Endurance Voltage.”
6. During the pulsed R
(ON)
measurement ( I
O
duration 30ms), ambient (T
A
) and case temperature (T
C
) are equal.
Applications Information
On-Resistance and Derating Curves
The Output On-Resistance, R
(ON)
, speci ed in this data
sheet, is the resistance measured across the output
contact when a pulsed current signal (Io=0.2A) is ap-
plied to the output pins. The use of a pulsed signal (≤
30ms) implies that each junction temperature is equal
to the ambient and case temperatures. The steady-state
resistance, Rss, on the other hand, is the value of the re-
sistance measured across the output contact when a DC
current signal is applied to the output pins for a duration
su cient to reach thermal equilibrium. Rss includes the
e ects of the temperature rise in the device.
Derating curves are shown in Figures 1 and 2, specify ing
the maximum output current allowable for a given am-
bient temperature. The maximum allowable output cur-
rent and power dissipation are related by the ex pression
Rss=Po(max)/(Io(max))
2
from which Rss can be calculated.
Staying within the safe area assures that the steady state
MOSFET junction temperature remains less than 125°C.
Turn On Time and Turn O Time Variation
The ASSR-32XX Series exhibits a very fast turn on and
turn o time. Both the turn on and turn o time can be
adjusted by choosing proper forward current as depicted
in Figures 9 and 11. The changes of the turn on and turn
o time with ambient temperature are also shown in
Figures 10 and 12.
