±15kV ESD-Protected, 3.0V to 5.5V, Low-Power,

up to 250kbps, True RS-232 Transceiver

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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.

V+ to GND (Note 1) ..................................................-0.3V to +7V

V- to GND (Note 1) ...................................................+0.3V to -7V

V+ + |V-| (Note 1) .................................................................+13V

Input Voltages

T_IN, SHDN to GND ..............................................-0.3V to +6V

R_IN to GND .....................................................................±25V

Output Voltages

T_OUT to GND...............................................................±13.2V

Short-Circuit Duration, T_OUT to GND.......................Continuous

20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW

18-Pin SO (derate 9.52mW/°C above +70°C)...............762mW

Operating Temperature Ranges

MAX3385ECAP ....................................................0°C to +70°C

MAX3385ECWN ...................................................0°C to +70°C

MAX3385EEAP .................................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10sec) .............................+300°C

R_OUT, receivers disabled

T_IN, SHDN

T_IN, SHDN

CONDITIONS

k

Ω

35

7

Input Resistance

V

0.5

Input Hysteresis

V

1.8

2.4

Input Threshold High

1.5

2.4

V

0.8

1.5

Input Threshold Low

0.6

1.2

V

-25

+25

Input Voltage Range

V

0.6

0.1

Output Voltage High

mA

0.3

1

Supply Current

V

0.4

Output Voltage Low

µA

±0.05

±10

Output Leakage Current

V

0.5

Transmitter Input Hysteresis

V

0.8

Input Logic Threshold Low

2.0

V

2.4

Input Logic Threshold High

UNITS

MIN

TYP

MAX

PARAMETER

Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.

T_IN, SHDN

µA

±0.01

±1

Input Leakage Current

SHDN = GND

µA

110

Shutdown Supply Current

LOGIC INPUTS

RECEIVER OUTPUTS

RECEIVER INPUTS