MAX14840E Ver la hoja de datos (PDF) - Maxim Integrated
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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
VCC
MAX14840E
MAX14841E
RO
R
RE
B
SHUTDOWN
DE
A
DI
D
GND
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