HCPL4100 HP [Agilent(Hewlett-Packard)], HCPL4100 Datasheet - Page 7

• Manufacturer Part Number: HCPL4100
• Description: Optically Coupled 20 mA Current Loop Transmitter
• Manufacturer: HP [Agilent(Hewlett-Packard)]

Figure 2. Typical Mark State Output
Voltage vs. Temperature.
Notes:
1. Derate linearly above 55 C free air
2. Derate linearly above a free-air
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
temperature at a rate of 3.8 mW/ C.
Proper application of the derating
factors will prevent IC junction
temperatures from exceeding 125 C
for ambient temperatures up to 85 C.
temperature of 70 C at a rate of 2.3
mW/ C. A significant amount of
power may be dissipated in the
HCPL-4100 output circuit during the
transition from the SPACE state to
the MARK state when driving a data
line or capacitive load (C
average power dissipation during the
transition can be estimated from the
following equation which assumes a
linear discharge of a capacitive load:
P = I
the output voltage in the SPACE
state. The duration of this transition
can be estimated as t = C
V
driving twisted pair data lines with
NRZ data as shown in Figure 11, the
transition time will be less than 10%
of one bit time.
MO
-40
)/I
SC
SC
20 mA
12 mA
2 mA
-20
(V
I
. For typical applications
O
T
SO
A
– TEMPERATURE – °C
0
+ V
MO
20
)/2, where V
40
OUT
V
OUT
60
V
CC
I
= 2 V
). The
= 5 V
(V
80
SO
SO
100
is
-
Figure 3. Typical Output Voltage vs.
Loop Current.
3. Derate linearly above 55 C free-air
4. The maximum current that will flow
5. The device is considered a two
6. The t
7. The t
8. The rise time, t
3.5
3.0
2.5
2.0
1.5
1.0
0.5
temperature at a rate of 5.1 mW/ C.
into the output in the mark state (I
is internally limited to protect the
device. The duration of the output
short circuit shall not exceed 10 ms.
terminal device, pins 1, 2, 3, and 4
are connected together, and pins 5,
6, 7, and 8 are connected together.
measured from the 1.3 volt level on
the leading edge of the input pulse to
the 10 mA level on the leading edge
of the output pulse.
measured from the 1.3 volt level on
the trailing edge of the input pulse to
the 10 mA level on the trailing edge
of the output pulse.
10% to the 90% level on the rising
edge of the output current pulse.
0
0
PLH
PHL
5
I
propagation delay is
propagation delay is
O
– OUTPUT CURRENT – mA
10
r
, is measured from the
15
V
V
T
CC
I
A
= 2 V
= 25 °C
20
= 5 V
25
SC
30
)
7
10. Common mode transient immunity in
11. Common mode transient immunity in
12. Use of a 0.1 F bypass capacitor
13. In accordance with UL 1577, each
Figure 4. Typical Space State Output
Current vs. Temperature.
9. The fall time, t
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
output in a Mark ("H") state (i.e.,
I
the logic low level is the maximum
(positive) dV
output in a Space ("L") state (i.e., I
< 3 mA).
connected between pins 5 and 8 is
recommended.
optocoupler is momentary withstand
proof tested by applying an insulation
test voltage
second (leakage detection current
limit, I
90% to the 10% level on the falling
edge of the output current pulse.
the logic high level is the maximum
(positive) dV
edge of the common mode pulse,
V
edge of the common mode pulse,
V
O
CM
CM
> 12 mA).
, that can be sustained with the
-40
, that can be sustained with the
i-o
27 V
20 V
V
-20
O
T
A
5 A).
– TEMPERATURE – °C
CM
CM
0
f
, is measured from the
3000 V rms for 1
/dt on the leading
/dt on the leading
20
40
V
V
60
CC
I
= 0.8 V
= 5 V
80
100
O