MAX489 datasheet(2/18 Pages) TGS

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ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VCC) .............................................................12V

Control Input Voltage (RE, DE)...................-0.5V to (VCC + 0.5V)

Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V)

Driver Output Voltage (A, B)...................................-8V to +12.5V

Receiver Input Voltage (A, B) .................................-8V to +12.5V

Receiver Output Voltage (RO).....................-0.5V to (VCC +0.5V)

Continuous Power Dissipation (TA = +70°C)

8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) ..800mW

8-Pin SO (derate 5.88mW/°C above +70°C).................471mW

14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW

8-Pin µMAX (derate 4.1mW/°C above +70°C) ..............830mW

8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW

14-Pin CERDIP (derate 9.09mW/°C above +70°C).......727mW

Operating Temperature Ranges

MAX4_ _C_ _/MAX1487C_ A ...............................0°C to +70°C

MAX4_ _E_ _/MAX1487E_ A .............................-40°C to +85°C

MAX4_ _MJ_/MAX1487MJA ...........................-55°C to +125°C

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

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

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.

DC ELECTRICAL CHARACTERISTICS

(VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted.) (Notes 1,

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Differential Driver Output (no load)

VOD1

Differential Driver Output

(with load)

VOD2

R = 50

Ω (RS-422)

R = 27

Ω (RS-485), Figure 4

1.5

Change in Magnitude of Driver

Differential Output Voltage for

Complementary Output States

∆VOD

R = 27

Ω or 50Ω, Figure 4

0.2

Driver Common-Mode Output

Voltage

VOC

R = 27

Ω or 50Ω, Figure 4

Change in Magnitude of Driver

Common-Mode Output Voltage for

Complementary Output States

∆VOD

R = 27

Ω or 50Ω, Figure 4

0.2

Input High Voltage

VIH

DE, DI, RE

2.0

Input Low Voltage

VIL

DE, DI, RE

0.8

Input Current

IIN1

DE, DI, RE

±2

µA

Input Current

(A, B)

IIN2

DE = 0V;

VCC = 0V or 5.25V,

all devices except

MAX487/MAX1487

VIN = 12V

1.0

VIN = -7V

-0.8

MAX487/MAX1487,

DE = 0V, VCC = 0V or 5.25V

VIN = 12V

0.25

VIN = -7V

-0.2

Receiver Differential Threshold

Voltage

VTH

-7V

≤ VCM ≤ 12V

-0.2

0.2

Receiver Input Hysteresis

∆VTH

VCM = 0V

Receiver Output High Voltage

VOH

IO = -4mA, VID = 200mV

3.5

Receiver Output Low Voltage

VOL

IO = 4mA, VID = -200mV

0.4

Three-State (high impedance)

Output Current at Receiver

IOZR

0.4V

≤ VO ≤ 2.4V

±1

µA

Receiver Input Resistance

RIN

-7V

≤ VCM ≤ 12V, all devices except

MAX487/MAX1487

Ω

-7V

≤ VCM ≤ 12V, MAX487/MAX1487

Ω

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