1µA Supply Current, 1Mbps, 3.0V to 5.5V,

RS-232 Transceivers with AutoShutdown Plus

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, FORCEON, FORCEOFF 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

16-Pin SSOP (derate 7.14mW/°C above +70°C) .........571mW

20-Pin Plastic DIP (derate 11.11mW/°C above +70°C) ...889mW

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

28-Pin Wide SO (derate 12.5mW/°C above +70°C)........... 1W

28-Pin SSOP (derate 9.52mW/°C above +70°C) .........762mW

Operating Temperature Ranges

MAX32_ _C_ _....................................................0°C to +70°C

MAX32_ _E_ _ ..................................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

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

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

all R_IN idle, all T_IN idle

T_IN, FORCEON,

FORCEOFF

CONDITIONS

k

Ω

3

5

7

Input Resistance

V

0.5

Input Hysteresis

1.8

2.4

V

1.5

2.4

Input Threshold High

0.8

1.5

V

0.6

1.2

Input Threshold Low

V

-25

+25

Input Voltage Range

V

Output Voltage High

V

0.4

Output Voltage Low

µA

1

10

Supply Current, Shutdown

µA

1

10

Supply Current,

AutoShutdown Plus

µA

±0.05

±10

Output Leakage Current

µA

±0.01

±1

Transmitter Input Hysteresis

V

0.5

V

2.4

Input Logic Threshold High

mA

0.3

1

Supply Current,

AutoShutdown Plus Disabled

V

0.8

Input Logic Threshold Low

2

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

FORCEOFF = GND

R_OUT (MAX3244/MAX3245), receivers

disabled

T_IN, FORCEON, FORCEOFF

T_IN, FORCEON, FORCEOFF

LOGIC INPUTS AND RECEIVER OUTPUTS

RECEIVER INPUTS

Input Leakage Current