Caple RBR5 Especificaciones Pagina 58

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MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
______________________________________________________________________________________ 13
TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB4
0 0 0 0 Normal Operation All Active All Active All Active All Active
0 0 0 1 Normal Operation All Active All Active All Active
All 3-State, except
RB5 stays active on
MAX247
0 0 1 0 Normal Operation All Active All Active All 3-State All Active
0 0 1 1 Normal Operation All Active All Active All 3-State
All 3-State, except
RB5 stays active on
MAX247
0 1 0 0 Normal Operation All Active All 3-State All Active All Active
0 1 0 1 Normal Operation All Active All 3-State All Active
All 3-State, except
RB5 stays active on
MAX247
0 1 1 0 Normal Operation All Active All 3-State All 3-State All Active
0 1 1 1 Normal Operation All Active All 3-State All 3-State
All 3-State, except
RB5 stays active on
MAX247
1 0 0 0 Normal Operation All 3-State All Active All Active All Active
1 0 0 1 Normal Operation All 3-State All Active All Active
All 3-State, except
RB5 stays active on
MAX247
1 0 1 0 Normal Operation All 3-State All Active All 3-State All Active
1 0 1 1 Normal Operation All 3-State All Active All 3-State
All 3-State, except
RB5 stays active on
MAX247
1 1 0 0 Shutdown All 3-State All 3-State
Low-Power
Receive Mode
Low-Power
Receive Mode
1 1 0 1 Shutdown All 3-State All 3-State
Low-Power
Receive Mode
All 3-State, except
RB5 stays active on
MAX247
1 1 1 0 Shutdown All 3-State All 3-State All 3-State
Low-Power
Receive Mode
1 1 1 1 Shutdown All 3-State All 3-State All 3-State
All 3-State, except
RB5 stays active on
MAX247
Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations
MAX248
OPERATION
STATUS
ENRB
MAX247 TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB5
TRANSMITTERS
ENRAENTBENTA
MAX249 TA1–TA3 TB1–TB3 RA1–RA5 RB1–RB5
RECEIVERS
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