+5V, Fail-Safe, 40Mbps, Profibus RS-485/

RS-422 Transceivers

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.

Control Input Voltage (RE, DE, DI, SHDN, TXP, RXP)

Driver Output Voltage (Y, Z) to GND .........................-8V to +13V

Receiver Input Voltage (A, B) to GND.......................-8V to +13V

Differential Driver Output Voltage (Y - Z) ...............................±8V

Differential Receiver Input (A - B) ..........................................±8V

Output Driver Current (Y, Z) ...........................................±250mA

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

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

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

14-Pin DIP (derate 10mW/°C above +70°C) ................800mW

Operating Temperature Range

MAX346_C__ ......................................................0°C to +70°C

MAX346_E__....................................................-40°C to +85°C

Junction Temperature ......................................................+150°C

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Power-Supply Range

4.75

5.25

V

DRIVER

Differential Driver Output

(No Load)

Figure 5, R =

∞

V

Differential Driver Output

Figure 5, R = 27

Ω

2.1

V

Change in Magnitude of

Differential Output Voltage

Figure 5, R = 50

Ω or 27Ω (Note 2)

0.2

V

Driver Common-Mode Output

Voltage

Figure 5, R = 50

Ω or 27Ω

3V

Change in Magnitude of

Common-Mode Voltage

Figure 5, R = 50

Ω or 27Ω (Note 2)

0.2

V

Input High Voltage

DE, DI, RE, SHDN

2.0

V

Input Low Voltage

DE, DI, RE, SHDN

0.8

V

Input Hysteresis

DE, DI, RE, SHDN

50

mV

+125

Output Leakage (Y and Z) Full

Duplex

GND or +5.25V

-100

µA

Input Current

DI, RE, DE, SHDN

±1µA

Pulldown Current

515

30

µA

0

+250

Driver Short-Circuit Output

Current (Note 3)

-7V

-250

mA

+25

Driver Short-Circuit Foldback

Output Current (Note 3)

-7V

+25

mA

Thermal-Shutdown Threshold

140

°C

RECEIVER

Differential Input Capacitance

Between A and B

8

pF

+250

Input Current (A and B) Full

Duplex

DE = GND,

-200

µA