+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Control Pin Configuration Tables
Table 1a. MAX245 Control Pin Configurations
OPERATION STATUS
Normal Operation
Normal Operation
Shutdown
TRANSMITTERS
RECEIVERS
ENT
ENR
1
1
±
±
1
±
1
±
Mll Mctive
Mll Mctive
Mll High-Z
Mll High-Z
Mll Mctive
Mll High-Z
Mll Low-Power Receive ꢄode
Mll High-Z
Shutdown
Table 1b. MAX245 Control Pin Configurations
TRANSMITTERS
RECEIVERS
OPERATION
STATUS
ENT
ENR
TA1–TA4
TB1–TB4
RA1–RA5
Mll Mctive
RB1–RB5
Mll Mctive
1
1
1
±
Normal Operation
Normal Operation
Mll Mctive
Mll Mctive
RM±ꢀRMꢁ High-Z%
RM5 Mctive
RB±ꢀRBꢁ High-Z%
RB5 Mctive
Mll Mctive
Mll Mctive
Mll High-Z
Mll Low-Power
Receive ꢄode
Mll Low-Power
Receive ꢄode
±
±
1
±
Shutdown
Shutdown
Mll High-Z
Mll High-Z
RM±ꢀRMꢁ High-Z%
RM5 Low-Power
Receive ꢄode
RB±ꢀRBꢁ High-Z%
RB5 Low-Power
Receive ꢄode
Mll High-Z
Table 1c. MAX246 Control Pin Configurations
TRANSMITTERS
RECEIVERS
OPERATION
STATUS
ENA
ENB
TA1–TA4
TB1–TB4
RA1–RA5
Mll Mctive
RB1–RB5
1
1
1
±
Normal Operation
Normal Operation
Mll Mctive
Mll Mctive
Mll Mctive
RB±ꢀRBꢁ High-Z%
RB5 Mctive
Mll Mctive
Mll High-Z
Mll Mctive
Mll Mctive
RM±ꢀRMꢁ High-Z%
RM5 Mctive
±
±
1
±
Shutdown
Shutdown
Mll High-Z
Mll High-Z
Mll Mctive
RM±ꢀRMꢁ High-Z%
RM5 Low-Power
Receive ꢄode
RB±ꢀRBꢁ High-Z%
RM5 Low-Power
Receive ꢄode
Mll High-Z
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