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參數(shù)資料
| 型號(hào)： | HCPL-5761 |
| 英文描述： | AC/DC to Logic Interface Hermetically Sealed Optocouplers(AC/DC邏輯接口的密封光耦合器) |
| 中文描述： | AC / DC的邏輯接口氣密密封光耦合器（交流/直流邏輯接口的密封光耦合器） |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大?。?/td> | 212K |
| 代理商： | HCPL-5761 |
9
Electrical Considerations
The HCPL-5760, HCPL-5761,
HCPL-576K or 5962-89477
optocoupler has internal
temperature compensated,
predictable voltage and current
threshold points which allow
selection of an external resistor,
R
x
, to determine larger external
threshold voltage levels. For a
desired external threshold
voltage, V
±
, a corresponding
typical value of R
can be
obtained from Figure 10. Specific
calculation of R
can be obtained
from Equation (1) of Figure 11.
Specification of both V
and V
voltage threshold levels simulta-
neously can be obtained by the
use of R
x
and R
p
as shown in
Figure 11 and determined by
Equations (2) and (3).
R
can provide over-current
transient protection by limiting
input current during a transient
condition. For monitoring
contacts with a relay or switch,
the HCPL-5760/1/K, or
5962-89477 combination with R
x
and R
can be used to allow a
specific current to be conducted
through the contacts for cleaning
purposes (wetting current).
The choice of which input voltage
clamp level to choose depends
upon the application of this
device (see Figure 3). It is
recommended that the low clamp
condition be used when possible
to lower the input power
dissipation as well as the LED
current, which minimizes LED
degradation over time.
In applications where dV
may
be extremely large (such as static
discharge), a series resistor, R
CC
,
should be connected in series
with V
CC
and Pin 8 to protect the
Figure 10. Typical External Threshold
Characteristic, V
±
vs. R
x
.
detector IC from destructively
high surge currents. See note 14
for determination of R
. In
addition, it is recommended that a
ceramic disc bypass capacitor of
0.01
μ
F to 0.1
μ
F be placed
between Pins 8 and 5 to reduce
the effect of power supply noise.
For interfacing ac signals to TTL
systems, output low pass filtering
can be performed with a pullup
resistor of 1.5 k
and 20
μ
F
capacitor. This application
requires a Schmitt trigger gate to
avoid slow rise time chatter
problems. For ac input applica-
tions, a filter capacitor can be
placed across the dc input
terminals for either signal or
transient filtering.
Either ac (Pins 1, 4) or dc (Pins
2, 3) input can be used to
determine external threshold
levels.
For one specifically selected
external threshold voltage level
V
or V
, R
can be determined
without use of R
p
via
V
- V
(-) (-)
R
x
= –––––––––
I
(-)
(1)
See Application Note 1004 for
more information.
For two specifically selected
external threshold voltage levels,
V
and V
, the use of R
and R
p
will permit this selection via
equations (2), (3) provided the
following conditions are met:
R
P
=
V
(V
) - V
(V
)
––––––––––––––––––––––––––– (3)
I
TH+
(V
-
- V
TH-
) + I
TH-
(V
TH+
- V
+
)
V
(V
) - V
(V
)
R
x
= –––––––––––––––––––– (2)
I
TH+
(V
TH-
) - I
TH-
(V
TH+
)
V
V
–––
≥
––– and –––––––– < ––––
V
-
V
TH-
V
- V
I
V
-
- V
TH-
I
TH-
Figure 9. Operating Circuit for Burn-In and Steady State Life Tests.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-5761#100 | 功能描述:邏輯輸出光電耦合器 AC/DC to Logic Hermetically sealed RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-5761#200 | 功能描述:邏輯輸出光電耦合器 AC/DC to Logic Hermetically sealed RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-5761#300 | 功能描述:邏輯輸出光電耦合器 AC/DC to Logic Hermetically sealed RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-576K | 功能描述:邏輯輸出光電耦合器 AC/DC to Logic Hermetically sealed RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
| HCPL-576K#200 | 功能描述:邏輯輸出光電耦合器 AC/DC to Logic Hermetically sealed RoHS:否 制造商:Fairchild Semiconductor 絕緣電壓:4243 Vrms 輸出類型:Push-Pull 最大傳播延遲時(shí)間:500 ns 最大正向二極管電壓: 最大反向二極管電壓: 最大正向二極管電流: 最大連續(xù)輸出電流:2.5 A 最大功率耗散:100 mW 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 封裝 / 箱體:SO-16 封裝:Tube |
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