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參數(shù)資料
| 型號(hào)： | HCPL-0720 |
| 英文描述： | 40 ns Propagation Delay,CMOS Optocoupler(40 ns 傳播延遲，CMOS光耦合器) |
| 中文描述： | 40納秒的傳播延遲，光耦的CMOS（40納秒的傳播延遲，的CMOS光耦合器） |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 305K |
| 代理商： | HCPL-0720 |
14
Figure 20. Isolated Node Providing Power to the Network.
Isolated Node Providing
Power to the Network
Figure 20 shows a node providing
power to the network. The AC line
powers a regulator which
provides five (5) volts locally. The
AC line also powers a 24 volt
isolated supply, which powers the
network, and another five-volt
regulator, which, in turn, powers
the transceiver and isolated
(network) side of the two
optocouplers. This method is
recommended when there are a
limited number of devices on the
network that don’t require much
power, thus eliminating the need
for separate power supplies.
More importantly, the unique
“dual-inverting” design of the
HCPL-772X/072X ensure the
network will not “l(fā)ock-up” if
either AC line power to the node
is lost or the node powered-off.
Specifically, when input power
(V
DD1
) to the HCPL-772X/072X
located in the transmit path is
eliminated, a RECESSIVE bus
state is ensured as the
HCPL-772X/072X output voltage
(V
O
) go HIGH.
NODE/APP SPECIFIC
uP/CAN
HCPL
772x/072x
HCPL
772x/072x
TRANSCEIVER
5 V REG.
V+ (SIGNAL)
V– (SIGNAL)
V+ (POWER)
V– (POWER)
GALVANIC
ISOLATION
BOUNDARY
AC LINE
DRAIN/SHIELD
SIGNAL
POWER
ISOLATED
SWITCHING
POWER
SUPPLY
5 V REG.
DEVICENET NODE
Figure 19. Isolated Node with Transceiver Powered by the Network.
NODE/APP SPECIFIC
uP/CAN
HCPL
772x/072x
HCPL
772x/072x
TRANSCEIVER
NON ISO
5 V
REG.
NETWORK
POWER
SUPPLY
V+ (SIGNAL)
V– (SIGNAL)
V+ (POWER)
V– (POWER)
GALVANIC
ISOLATION
BOUNDARY
AC LINE
DRAIN/SHIELD
SIGNAL
POWER
*HCPL
772x/072x
* OPTIONAL FOR BUS V + SENSE
be implemented. A locally
powered node with an un-
powered isolated Physical Layer
will accumulate errors and
become bus-off if it attempts to
transmit. The Bus V+ sense
signal would be used to change
the BOI attribute of the DeviceNet
Object to the “auto-reset” (01)
value. Refer to Volume 1, Section
5.5.3. This would cause the node
to continually reset until bus
power was detected. Once power
was detected, the BOI attribute
would be returned to the “hold in
bus-off” (00) value. The BOI
attribute should not be left in the
“auto-reset” (01) value since this
defeats the jabber protection
capability of the CAN error
confinement. Any inexpensive low
frequency optical isolator can be
used to implement this feature.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HCPL-0721 | 40 ns Propagation Delay,CMOS Optocoupler(40 ns 傳播延遲，CMOS光耦合器) |
| HCPL-0731 | Dual Channel Low Input Current, High Gain Optocouplers(雙通道，低輸入電流，高增益光耦器) |
| HCPL-2730 | Dual Channel Low Input Current, High Gain Optocouplers(雙通道，低輸入電流，高增益光耦器) |
| HCPL-2731 | Dual Channel Low Input Current, High Gain Optocouplers(雙通道，低輸入電流，高增益光耦器) |
| HCPL-073A | Very Low Power Consumption High Gain Optocouplers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HCPL-0720#060 | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
| HCPL-0720#500 | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
| HCPL0720#560 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FET-OUTPUT OPTOCOUPLER |
| HCPL-0720#560 | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
| HCPL-0720-000E | 功能描述:高速光耦合器 25MBd 1Ch 150mA RoHS:否 制造商:Avago Technologies 電流傳遞比: 最大波特率: 最大正向二極管電壓:1.75 V 最大反向二極管電壓:5 V 最大功率耗散:40 mW 最大工作溫度:+125 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-5 封裝:Tube |
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