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參數(shù)資料
| 型號(hào)： | ISO508P-U |
| 英文描述： | Uni-Directional ISOLATED DIGITAL COUPLERS |
| 中文描述： | 單向隔離數(shù)字耦合器 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大小： | 187K |
| 代理商： | ISO508P-U |
4
ISO508
OPERATION
ISO508 has two modes of operation: synchronous and asyn-
chronous. The mode is selected by the CONT pin. CONT
held low selects synchronous operation while CONT held
high will select asynchronous operation. In synchronous
mode the user has control of the time at which the data is
transmitted across the barrier, while in asynchronous mode
the data is continually transmitted across the barrier under
the internal logic control. The input latches and output
latches are level sensitive.
SYNCHRONOUS MODE
With CONT held low, the input data is transmitted across the
barrier under the control of LEI. When LEI is held low, no
data is passed to the input buffer and no barrier transmission
takes place. When LEI goes high, data is transferred to the
input buffer. On the falling edge of LEI the data is then
transmitted across the barrier.
FIGURE 1. Data Transfer—Synchronous Mode.
If LEI is taken high when transmission is in progress, the
input data is recaptured in the input buffer without interfer-
ing with the transmitting data. If LEI then goes low while
transmission is still in progress the current transmission will
be terminated and restarted with the new data. The last full
data transmission will not be affected.
The output data changes under the control of LEO. If LEO
is high at the end of a transmission, the output data will
change immediately the transmission is complete. If LEO is
low at the end of transmission, the output data will change
when LEO goes high. In both cases all data bits will change
together guaranteeing the specified skew performance. Trans-
mitted data can be ignored selectively, if desired, by main-
taining LEO low until the desired data is available.
ASYNCHRONOUS MODE
When CONT is held high, the internal transmission circuit is
in control and will initiate data transmission asynchronously
at 1MWords/s i.e., 1Mbps on each of the 8 channels.
The asynchronous mode runs continuously under the inter-
nal controls. LEI can serve as an input data latch, but will not
control the data transmission across the barrier. As in the
synchronous mode, LEI and LEO can be used to select of
ignore input or output data respectively.
FIGURE 2. Data Transfer—Synchronous Mode Restart.
FIGURE 3. Data Transfer—Asynchronous Mode.
n–1
INPUT DATA
LEI
BARRIER
LEO
DATA n
DATA n+1
DATA n–1
OUTPUT DATA
DATA n
ACTIVE
ACTIVE
n–1
INPUT DATA
LEI
BARRIER
LEO
DATA n+1
DATA n+2
DATA n
DATA n–1
OUTPUT DATA
DATA n+1
ACTIVE
ACTIVE
ACTIVE
n–1
INPUT DATA
LEI
BARRIER
LEO
DATA n
DATA n+1
DATA n+2
OUTPUT DATA
ACTIVE n–1
ACTIVE n
ACTIVE n
ACTIVE n+2
DATA n–1
DATA n
n+2
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| ISO5125I-100 | 制造商:CT CONCEPT 功能描述:GATE DRIVER |
| ISO5125I-120 | 功能描述:DC/DC CONVERTER 5W HV ISO 制造商:power integrations 系列:ISO5125I 零件狀態(tài):在售 類型:開放框架 電壓 - 輸入（最小值）:14.5V 電壓 - 輸入（最大值）:15.5V 輸出數(shù):1 電壓 - 輸出 2:- 電壓 - 輸出 3:- 電壓 - 輸出 4:- 電流 - 輸出（最大值）:200mA 功率（W）:5W 應(yīng)用:ITE（商業(yè)） 工作溫度:-40°C ~ 85°C 效率:- 安裝類型:底座安裝 大小/尺寸:4.72" 長(zhǎng) x 1.85" 寬 x 1.75" 高（120.0mm x 47.0mm x 44.5mm） 認(rèn)可:- 標(biāo)準(zhǔn)包裝:6 |
| ISO5125I-45 | 功能描述:DC/DC CONVERTER 5W HV ISO 制造商:power integrations 系列:ISO5125I 零件狀態(tài):在售 類型:開放框架 電壓 - 輸入（最小值）:14.5V 電壓 - 輸入（最大值）:15.5V 輸出數(shù):1 電壓 - 輸出 2:- 電壓 - 輸出 3:- 電壓 - 輸出 4:- 電流 - 輸出（最大值）:200mA 功率（W）:5W 應(yīng)用:ITE（商業(yè)） 工作溫度:-40°C ~ 85°C 效率:- 安裝類型:底座安裝 大小/尺寸:4.72" 長(zhǎng) x 1.85" 寬 x 1.75" 高（120.0mm x 47.0mm x 44.5mm） 認(rèn)可:- 標(biāo)準(zhǔn)包裝:6 |
| ISO5125I-65 | 功能描述:DC/DC CONVERTER 5W HV ISO 制造商:power integrations 系列:ISO5125I 零件狀態(tài):在售 類型:開放框架 電壓 - 輸入（最小值）:14.5V 電壓 - 輸入（最大值）:15.5V 輸出數(shù):1 電壓 - 輸出 2:- 電壓 - 輸出 3:- 電壓 - 輸出 4:- 電流 - 輸出（最大值）:200mA 功率（W）:5W 應(yīng)用:ITE（商業(yè)） 工作溫度:-40°C ~ 85°C 效率:- 安裝類型:底座安裝 大小/尺寸:4.72" 長(zhǎng) x 1.85" 寬 x 1.75" 高（120.0mm x 47.0mm x 44.5mm） 認(rèn)可:- 標(biāo)準(zhǔn)包裝:6 |
| ISO518 | 制造商:BB 制造商全稱:BB 功能描述:Bidirectional ISOLATED DIGITAL COUPLERS |
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