HCPL-263N#300 Avago Technologies US Inc., HCPL-263N#300 Datasheet - Page 15

• Manufacturer Part Number: HCPL-263N#300
• Description: OPTOCOUPLER 2CH 10MBD 8-SMD GW
• Manufacturer: Avago Technologies US Inc.

Specifications of HCPL-263N#300

• Package / Case: 8-SMD Gull Wing
• Voltage - Isolation: 3750Vrms
• Number Of Channels: 2, Unidirectional
• Current - Output / Channel: 50mA
• Data Rate: 10MBd
• Propagation Delay High - Low @ If: 53ns @ 3.5mA
• Current - Dc Forward (if): 10mA
• Input Type: DC
• Output Type: Open Collector
• Mounting Type: Surface Mount, Gull Wing
• Isolation Voltage: 3750 Vrms
• Maximum Continuous Output Current: 50 mA
• Maximum Fall Time: 12 ns
• Maximum Forward Diode Current: 10 mA
• Maximum Rise Time: 42 ns
• Minimum Forward Diode Voltage: 1 V
• Output Device: Logic Gate Photo IC
• Configuration: 2 Channel
• Maximum Baud Rate: 10 MBps
• Maximum Forward Diode Voltage: 1.6 V
• Maximum Reverse Diode Voltage: 3 V
• Maximum Power Dissipation: 60 mW
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

15
Table 1 indicates the directions of I
ing on the direction of the common-mode transient.
For transients occurring when the LED is on, common-
mode rejection (CMR
state) depends upon the amount of LED current drive (I
For conditions where I
old (I
balance each other. In other words, any condition where
common-mode transients cause a momentary decrease
in I
1) will cause common-mode failure for transients which
are fast enough.
Likewise for common-mode transients which occur
when the LED is off (i.e. CMR
if an imbalance between I
I
optocoupler, the transient “signal” may cause the output
to spike below 2 V (which constitutes a CMR
By using the recommended circuit in Figure 20, good
CMR can be achieved. (In the case of the -261N families,
a minimum CMR of 15 kV/µs is guaranteed using this cir-
cuit.) The balanced I
and I
from transient coupling through C
Figure 21. AC equivalent circuit for HCPL-261X.
F
1/2 R
1/2 R
equal to or greater than the switching threshold of the
F
(i.e. when dV
TH
LN
LED
LED
), CMR
to reduce the amount by which I
1
2
3
4
L
also depends on the extent which I
I
LN
CM
SHIELD
/dt>0 and |I
LED
+
I
C
LP
HCPL- 261A fig 20
L
V
LC
, since the output is in the “low”
F
-setting resistors help equalize I
CM
C
is close to the switching thresh-
LA
–
LP
H
and I
, since the output is “high”),
FP
| > |I
LN
LP
LA
8
7
6
5
results in a transient
and I
FN
and C
|, referring to Table
LED
LN
0.01 µF
LC
flow depend-
is modulated
.
H
failure).
15 pF
LP
350 Ω
and I
F
LN
LP
).
V
V
GND
CC
O
CMR with Other Drive Circuits
CMR performance with drive circuits other than that
shown in Figure 20 may be enhanced by following these
guidelines:
1. Use of drive circuits where current is shunted from
2. Use of I
Using any one of the drive circuits in Figures 22-24 with
I
HCPL-261N family, as long as the PC board layout prac-
tices are followed. Figure 22 shows a circuit which can
be used with any totem-pole-output TTL/LSTTL/HCMOS
logic gate. The buffer PNP transistor allows the circuit to
be used with logic devices which have low current-sink-
ing capability. It also helps maintain the driving-gate
power-supply current at a constant level to minimize
ground shifting for other devices connected to the in-
put-supply ground.
When using an open-collector TTL or open-drain CMOS
logic gate, the circuit in Figure 23 may be used. When
using a CMOS gate to drive the optocoupler, the circuit
shown in Figure 24 may be used. The diode in parallel
with the R
LED.
+
F
= 10 mA will result in a typical CMR of 8 kV/µs for the
the LED in the LED “off” state (as shown in Figures 22
and 23). This is beneficial for good CMR
TTL/CMOS
Figure 22. TTL interface circuit for the HCPL-261A/-261N families.
74L504
FH
GATE)
LED
(ANY
> 3.5 mA. This is good for high CMR
speeds the turn-off of the optocoupler
V
HCPL- 261A fig 21
CC
2N3906
(ANY PNP)
420 Ω
(MAX)
1
2
3
4
H
.
HCPL-261X
LED
L
.