Fail-Safe, High-Speed (10Mbps),

Slew-Rate-Limited RS-485/RS-422 Transceivers

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

Special Input Voltage

Driver Output Voltage (A, B, Y, Z)........................................±13V

Receiver Input Voltage (A, B) ..............................................±13V

Receiver Input Voltage, Full Duplex (A, B) ..........................±25V

Continuous Power Dissipation

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

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

14-Pin Plastic DIP (derate 10.0mW/°C above +70°C) ....800mW

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

Operating Temperature Ranges

MAX308_C_ _ .....................................................0°C to +70°C

MAX308_E_ _...................................................-40°C to +85°C

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

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

Figure 5, R = 50

Ω (RS-422)

DE = GND,

DE = GND,

H/F, TXP, RXP, internal pull-down

DE, DI, RE

SRL

MAX3080–MAX3085, and MAX3089 with

DE, DI, RE, H/F, TXP, RXP

Figure 5, R = 50

Ω or R = 27Ω

Figure 5, R = 50

Ω or R = 27Ω

Figure 5, R = 50

Ω or R = 27Ω

SRL (Note 3)

DE, DI, RE, H/F, TXP, RXP

SRL

CONDITIONS

µA

125

Output Leakage (Y and Z)

Full Duplex

µA

125

Input Current (A and B)

Full Duplex

µA

75

SRL Input Current

V

0.8

Input Low Voltage

V

Input Middle Voltage

V

Input High Voltage

V

2.0

Differential Driver Output

10

40

µA

±2

SRL Input Current

mV

100

DI Input Hysteresis

V

0.8

Input Low Voltage

V

0.2

Change in Magnitude of

Differential Output Voltage

(Note 2)

V

3

Driver Common-Mode Output

Voltage

V

0.2

Change In Magnitude of

Common-Mode Voltage (Note 2)

V

2.0

Input High Voltage

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Figure 5, R = 27

Ω (RS-485)

1.5

SRL = GND (Note 3)

-75

-100

-75

Figure 5

V

5

Differential Driver Output

(no load)

mA

Driver Short-Circuit Output

Current (Note 4)

DRIVER

-7V

-250

0V

0V

±25

250