MAX239 Maxim Integrated Products, MAX239 Datasheet - Page 13
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MAX239
Manufacturer Part Number
MAX239
Description
(MAX220 - MAX249) +5V-Powered / Multichannel RS-232 Drivers/Receivers
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX239.pdf
(36 pages)
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Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations
ENTA
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ENTB
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
ENRA
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
______________________________________________________________________________________
ENRB
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
Normal Operation
OPERATION
+5V-Powered, Multichannel RS-232
STATUS
Shutdown
Shutdown
Shutdown
Shutdown
MAX247
MAX248
MAX249
All Active
All Active
All Active
All Active
All Active
All Active
All Active
All Active
All 3-State
All 3-State
All 3-State
All 3-State
All 3-State
All 3-State
All 3-State
All 3-State
TA1–TA4
TA1–TA4
TA1–TA3
TRANSMITTERS
All Active
All Active
All Active
All Active
All 3-State
All 3-State
All 3-State
All 3-State
All Active
All Active
All Active
All Active
All 3-State
All 3-State
All 3-State
All 3-State
TB1–TB4
TB1–TB4
TB1–TB3
Drivers/Receivers
All Active
All Active
All 3-State
All 3-State
All Active
All Active
All 3-State
All 3-State
All Active
All Active
All 3-State
All 3-State
Low-Power
Receive Mode
Low-Power
Receive Mode
All 3-State
All 3-State
RA1–RA4
RA1–RA4
RA1–RA5
RECEIVERS
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
All Active
All 3-State, except
RB5 stays active on
MAX247
Low-Power
Receive Mode
All 3-State, except
RB5 stays active on
MAX247
Low-Power
Receive Mode
All 3-State, except
RB5 stays active on
MAX247
RB1–RB5
RB1–RB4
RB1–RB5
13