+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Absolute Maximum Ratings—MAX225/MAX244–MAX249
(Voltages referenced to GNDꢂ)
Continuous Power Dissipation (ꢅ = +41°C)
M
X8-Pin Wide SO (derate ±Xꢂ51mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±W
CC
ꢁ1-Pin Plastic DIP (derate ±±ꢂ±±mW/°C above +41°C) ꢂꢂꢂ6±±mW
ꢁꢁ-Pin PLCC (derate ±.ꢂ..mW/°C above +41°C) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±ꢂ14W
Operating ꢅemperature Ranges
RINꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±X5V
ꢅOUꢅ (Note 6)ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ±±5V
ꢄMAXX5C_ _% ꢄMAXꢁ_C_ _ ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ1°C to +41°C
ꢄMAXX5E_ _% ꢄMAXꢁ_E_ _ ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-ꢁ1°C to +85°C
Storage ꢅemperature Rangeꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-65°C to +±61°C
Lead ꢅemperature (soldering%±1s))ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+.11°C
Soldering ꢅemperature (reflow)
ꢁ1 PDIP (Pꢁ1ꢄ-X) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+XX5°C
Mll other lead(Pb)-free packagesꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+X61°C
Mll other packages containing lead(Pb) ꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ+Xꢁ1°C
ROUꢅꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂ-1ꢂ.V to (V
Short Circuit Duration (one output at a time)
+ 1ꢂ.V)
CC
ꢅOUꢅ to GNDꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂContinuous
ROUꢅ to GNDꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂꢂContinuous
Note 6: Input voltage measured with transmitter output in a high-impedance state% shutdown% or V
= 1Vꢂ
CC
Stresses beyond those listed under “Mbsolute ꢄaximum Ratings” may cause permanent damage to the deviceꢂ ꢅhese are stress ratings only% and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not impliedꢂ Exposure to
absolute maximum rating conditions for extended periods may affect device reliabilityꢂ
Electrical Characteristics—MAX225/MAX244–MAX249
(ꢄMAXX5% V
= +5ꢂ1V ±50ꢆ ꢄMAXꢁꢁꢀꢄMAXꢁ9% V
= +5ꢂ1V ±±10% external capacitors C±ꢀCꢁ = ±ꢃµꢆ ꢅ = ꢅ
to ꢅ
ꢆ unless
ꢄMA
CC
CC
M
ꢄIN
otherwise notedꢂ) (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Input Logic-Low Voltage
Input Logic-High Voltage
±ꢂꢁ
±ꢂꢁ
1ꢂ8
V
V
X
Normal operation
Shutdown
±1
51
±±
6ꢁ
Logic Pullup/lnput Current
ꢅables ±aꢀ±d
ꢃM
±1ꢂ1±
±X1
±4ꢂ5
Data Rate
ꢅables ±aꢀ±d% normal operation
kbps
V
Output Voltage Swing
Mll transmitter outputs loaded with .kΩ to GND
±5
V
% V
= V
% V
CC% OUꢅ
% V
= ±±5V
%
ENA ENB ENT ENTA
±1ꢂ1±
±1ꢂ1±
±X5
±X5
V
ENTB
V
Output Leakage Current (Shutdown)
ꢅables ±aꢀ±d
ꢃM
V
V
= 1V%
= ±±5V
CC
OUꢅ
ꢅransmitter Output Resistance
Output Short-Circuit Current
RS-232 RECEIVERS
V
V
= V+ = V- = 1V% V
= ±XV (Note 8)
.11
±4
±1ꢄ
±.1
Ω
mM
CC
OUꢅ
= 1V
OUꢅ
RS-X.X Input Voltage Operating Range
RS-X.X Input Logic-Low Voltage
RS-X.X Input Logic-High Voltage
RS-X.X Input Hysteresis
±X5
V
V
V
V
V
= +5V
= +5V
= +5V
1ꢂ8
±ꢂ.
±ꢂ8
1ꢂ5
5
CC
CC
CC
Xꢂꢁ
±ꢂ1
4
V
1ꢂX
.
V
RS-X.X Input Resistance
kΩ
V
ꢅꢅL/CꢄOS Output Voltage Low
ꢅꢅL/CꢄOS Output Voltage High
I
I
= .ꢂXmM
= -±ꢂ1mM
1ꢂX
1ꢂꢁ
OUꢅ
.ꢂ5
-X
V
- 1ꢂX
V
OUꢅ
CC
Sourcing V
= V
-±1
OUꢅ
GND
ꢅꢅL/CꢄOS Output Short-Circuit Current
ꢅꢅL/CꢄOS Output Leakage Current
mM
ꢃM
Sinking V
= V
±1
.1
OUꢅ
CC
Normal operation% outputs disabled%
ꢅables ±aꢀ±d% 1V ≤ V ≤ V % V
±1ꢂ15
±1ꢂ±1
= V
CC
OUꢅ
CC ENR_
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