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MAX17841BGUE 数据表(PDF) 24 Page - Maxim Integrated Products

部件名 MAX17841BGUE
功能描述  Automotive SPI Communication Interface (ASCI)
PDF  33 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX17841BGUE 数据表(HTML) 24 Page - Maxim Integrated Products

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UART Transformer Coupling
The UART signals can be transformer-coupled because
oftheDC-balancedsignaling.Placinganisolationtrans-
former between the UART’s transmitter and the slave
device’s receiver provides common-mode isolation for
the case where the slave device is operating at a different
voltage level.
When no data is being transmitted (idle state), the trans-
mitter drives both outputs to a logic low level to prevent
any current flow through the transformer winding.
A common-mode noise filter can be implemented by
capacitively coupling the center tap of the transformer on
the transmitter side to the UART ground. Any common-
mode noise that passes through the transformer is effec-
tively shunted to ground.
UART Supplemental ESD Protection
The UART transmitter and receiver, with supplemental
protection diodes as shown in the application circuits, can
beusedforenhancedESDprotection.Thediodesshould
be placed as close as possible to the external connector.
Figure 14. Transformer Coupling of UART Signals
Figure 15. Supplemental ESD Protection for UART Transmitter
Figure 16. Supplemental ESD Protection for UART Receiver
(Shown with Capacitive Coupling)
RXLP
MAX178XX
BATTERY MANAGEMENT
DEVICE
MAX17841B
1.5kΩ
47Ω
47Ω
1.5kΩ
15pF
15pF
RXLN
GNDL
TXP
TXN
GNDL
10nF
TXP
47Ω
47Ω
TXN
GNDL
PESD1CAN
RXP
1.5kΩ
1.5kΩ
100kΩ
100kΩ
1nF
600V
15pF
50V
15pF
50V
1nF
600V
RXN
GNDL
PESD1CAN
Maxim Integrated │ 24
MAX17841B
Automotive SPI Communication Interface (ASCI)
www.maximintegrated.com



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