Datasheet

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,
Up to 1Mbps, True RS-232 Transceivers
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3V to +5.5V, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Notes 3, 4)
PARAMETER CONDITIONS MIN TYP MAX UNITS
RECEIVER OUTPUTS
Output Leakage Current
R_OUT (MAX3222E/MAX3237E/MAX3241E/
MAX3246E), EN = V
CC
, receivers disabled
±0.05 ±10 μA
Output-Voltage Low
I
OUT
= 1.6mA (MAX3222E/MAX3232E/MAX3241E/
MAX3246E), I
OUT
= 1.0mA (MAX3237E)
0.4 V
Output-Voltage High I
OUT
= -1.0mA
V
CC
-
0.6
V
CC
-
0.1
V
RECEIVER INPUTS
Input Voltage Range -25 +25 V
V
CC
= +3.3V 0.6 1.1
Input Threshold Low T
A
= +25°C
V
CC
= +5.0V 0.8 1.5
V
V
CC
= +3.3V 1.5 2.4
Input Threshold High T
A
= +25°C
V
CC
= +5.0V 2.0 2.4
V
Input Hysteresis 0.5 V
Input Resistance T
A
= +25°C 3 5 7 k
TRANSMITTER OUTPUTS
Output Voltage Swing
All transmitter outputs loaded with 3k! to ground
(Note 6)
±5 ±5.4 V
Output Resistance V
CC
= 0V, transmitter output = ±2V 300 50k 
Output Short-Circuit Current ±60 mA
Output Leakage Current
V
CC
= 0V or +3.0V to +5.5V, V
OUT
= ±12V, transmitters
disabled (MAX3222E/MAX3232E/MAX3241E/MAX3246E)
±25 μA
MOUSE DRIVABILITY (MAX3241E)
Transmitter Output Voltage
T1IN = T2IN = GND, T3IN = V
CC
, T3OUT loaded with
3k to GND, T1OUT and T2OUT loaded with 2.5mA
each
±5 V
ESD PROTECTION
Human Body Model ±15
IEC 1000-4-2 Air-Gap Discharge (except MAX3237E) ±15
IEC 1000-4-2 Contact Discharge (except MAX3237E) ±8
R_IN, T_OUT
IEC 1000-4-2 Contact Discharge (MAX3246E only) ±9
kV
Human Body Model ±15
IEC 1000-4-2 Air-Gap Discharge ±15
T_IN, R_IN, R_OUT, EN, SHDN,
MBAUD
MAX3237E
IEC 1000-4-2 Contact Discharge ±8
kV
Maxim Integrated
3
MAX3222E/MAX3232E/MAX3237E/
MAX3241E/MAX3246E