±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3V to +5.5V, C1–C4 = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 3, 4)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

RECEIVER OUTPUTS

Output Leakage Current

R_OUT (MAX3222E/MAX3237E/MAX3241E/

MAX3246E),

EN = VCC, receivers disabled

±0.05

±10

μA

Output-Voltage Low

IOUT = 1.6mA (MAX3222E/MAX3232E/MAX3241E/

MAX3246E), IOUT = 1.0mA (MAX3237E)

0.4

V

Output-Voltage High

IOUT = -1.0mA

VCC -

0.6

VCC -

0.1

V

RECEIVER INPUTS

Input Voltage Range

-25

+25

V

VCC = +3.3V

0.6

1.1

Input Threshold Low

TA = +25°C

VCC = +5.0V

0.8

1.5

V

VCC = +3.3V

1.5

2.4

Input Threshold High

TA = +25°C

VCC = +5.0V

2.0

2.4

V

Input Hysteresis

0.5

V

Input Resistance

TA = +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

VCC = 0V, transmitter output = ±2V

300

50k

Output Short-Circuit Current

±60

mA

Output Leakage Current

VCC = 0V or +3.0V to +5.5V, VOUT = ±12V, transmitters

disabled (MAX3222E/MAX3232E/MAX3241E/MAX3246E)

±25

μA

MOUSE DRIVABILITY (MAX3241E)

Transmitter Output Voltage

T1IN = T2IN = GND, T3IN = VCC, 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