+3V to +5.5V RS-232 Transceivers
with AutoShutdown
MAX3221/MAX3223/MAX3243
Absolute Maximum Ratings
V+ (Note 1)...............................................................-0.3V to +7V
V- (Note 1) ...............................................................+0.3V to -7V
V+ + |V-| (Note 1).................................................................+13V
Input Voltages
T_IN, FORCEOFF, FORCEON, EN (MAX3223) ......-0.3V to +6V
R_IN ................................................................................... 25V
Output Voltages
V
CC
...........................................................................-0.3V to +6V
16-Pin SSOP (derate 7.14mW/°C above +70°C) ...........571mW
16-Pin TSSOP (derate 6.70mW/°C above +70°C) .........533mW
20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW
20-Pin SSOP (derate 8.00mW/°C above +70°C) ...........640mW
20-Pin TSSOP DIP (derate 7.00mW/°C above +70°C).....559mW
28-Pin Wide SO (derate 12.50mW/°C above +70°C) ............1W
28-Pin SSOP (derate 9.52mW/°C above +70°C) ...........762mW
28-Pin TSSOP (derate 8.70mW/°C above +70°C) .........696mW
Operating Temperature Ranges
T_OUT............................................................................. 13.2V
R_OUT, INVALID ......................................-0.3V to (V
Short-Circuit Duration
+ 0.3V)
MAX32_ _C_ _.......................................................0°C to +70°C
MAX32_ _E_ _....................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
CC
T_OUT ......................................................................Continuous
Continuous Power Dissipation (T = +70°C)
A
Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These 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 implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
(V
= +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), T = T
A
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
CC
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
Supply Current, AutoShutdown
Supply Current, Shutdown
All R_IN open, FORCEON = GND,
1.0
1.0
0.3
10
10
µA
µA
FORCEOFF = V
CC
V
= 3.3V
CC
or 5.0V,
T = +25°C
FORCEOFF = GND
A
Supply Current,
AutoShutdown Disabled
FORCEON = FORCEOFF = V
,
CC
1.0
mA
no load
LOGIC INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold Low
0.8
V
V
T_IN, FORCEON, FORCEOFF, EN (MAX3223)
V
CC
CC
= 3.3V
= 5.0V
2.0
2.4
Input Logic Threshold High
T_IN, EN, FORCEON, FORCEOFF
V
Input Leakage Current
Output Leakage Current
Output Voltage Low
Output Voltage High
0.01
0.05
1.0
10
µA
µA
V
T_IN, EN, FORCEON, FORCEOFF
Receivers disabled
I
I
= 1.6mA
= -1.0mA
0.4
OUT
OUT
V
CC
- 0.6
V
- 0.1
CC
V
AUTOSHUTDOWN (FORCEON = GND, FORCEOFF = V
)
CC
Positive threshold
Negative threshold
1µA supply current, Figure 5
2.7
Receiver Input Thresholds to
Figure 5
V
V
Transmitters Enabled
-2.7
-0.3
Receiver Input Thresholds to
Transmitters Disabled
0.3
0.4
I
I
= 1.6mA
= -1.0mA
V
V
INVALID Output Voltage Low
OUT
V
- 0.6
INVALID Output Voltage High
OUT
CC
Receiver Threshold to
Transmitters Enabled (t
Receiver Positive or Negative
Threshold to INVALID High (t
Receiver Positive or Negative
Figure 5
Figure 5
Figure 5
250
1
µs
µs
µs
)
WU
)
)
INVH
30
Threshold to INVALID Low (t
INVL
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