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MAX14840E 데이터 시트보기 (PDF) - Maxim Integrated
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MAX14840E
40Mbps, +3.3V, RS-485 Half-Duplex Transceivers
Maxim Integrated
MAX14840E Datasheet PDF : 15 Pages
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40Mbps, +3.3V, RS-485 Half-Duplex
Transceivers
TRANSMITTING
INPUTS
RE
DE
DI
X
1
1
X
1
0
0
0
X
1
0
X
RECEIVING (MAX14840E)
INPUTS
RE
DE
A-B
0
X
R
200mV
0
X
P
-200mV
0
X
Open/Shorted
1
1
X
1
0
X
RECEIVING (MAX14841E)
INPUTS
RE
DE
A-B
0
X
R
-10mV
0
X
P
-200mV
0
X
Open/Shorted
1
1
X
1
0
X
X = Don’t care.
Note:
Shutdown mode, driver, and receiver outputs are in high impedance.
Function Table
OUTPUTS
B
A
0
1
1
0
High Impedance
High Impedance
Shutdown (see note)
OUTPUTS
RO
1
0
Previous State
High Impedance
Shutdown (see note)
OUTPUTS
RO
1
0
1
High Impedance
Shutdown (see note)
Functional Diagram
V
CC
MAX14840E
MAX14841E
RO
R
RE
B
SHUTDOWN
DE
A
DI
D
GND
______________________________________________________________________________________ 11
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