±15kV ESD-Protected, Slew-Rate-Limited,

Low-Power, RS-485/RS-422 Transceivers

2

_______________________________________________________________________________________

Control Input Voltage (

–

R

—

E

–

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

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

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

Operating Temperature Ranges

MAX4_ _C_ _/MAX1487EC_ A .............................0°C to +70°C

MAX4_ _E_ _/MAX1487EE_ A...........................-40°C to +85°C

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

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

DC 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.

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Driver Common-Mode Output

Voltage

3

V

Change in Magnitude of Driver

Differential Output Voltage for

Complementary Output States

0.2

V

Change in Magnitude of Driver

Common-Mode Output Voltage

for Complementary Output States

0.2

V

Input High Voltage

2.0

V

Input Low Voltage

0.8

V

Input Current

±2

µA

Differential Driver Output (no load)

5

V

2

V

Differential Driver Output

(with load)

1.5

5

1.0

-0.8

mA

0.25

mA

-0.2

Receiver Differential Threshold

Voltage

-0.2

0.2

V

Receiver Input Hysteresis

70

mV

Receiver Output High Voltage

3.5

Receiver Output Low Voltage

0.4

V

Three-State (high impedance)

Output Current at Receiver

±1

µA

12

k

Ω

CONDITIONS

DE = 0V;

all devices except

MAX487E/MAX1487E

R = 27

Ω or 50Ω, Figure 8

R = 27

Ω or 50Ω, Figure 8

R = 27

Ω or 50Ω, Figure 8

DE, DI,

–

R

—

E

–

MAX487E/MAX1487E,

DE, DI,

–

R

—

E

–

DE, DI,

–

R

—

E

–

-7V

R = 50

Ω (RS-422)

0.4V

R = 27

Ω (RS-485), Figure 8

-7V

MAX487E/MAX1487E

Receiver Input Resistance

-7V

48

k

Ω

Input Current

(A, B)

V