Rainbow-electronics MAX3469 Manual do Utilizador descarregar pdf (Página 2)

MAX3465–MAX3469

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

RS-422 Transceivers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +5V ±5%, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

= +5V and T

= +25°C.) (Note 1)

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.

Supply Voltage (V

) to GND ..................................-0.3V to +6V

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

to GND....................................................-0.3V to (V

+ 0.3V)

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

Receiver Output Voltage (RO) to GND.......-0.3V to (V

+ 0.3V)

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

Continuous Power Dissipation (T

= +70°C)

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 V

4.75 5.25 V

DRIVER

Differential Driver Output

(No Load)

Figure 5, R = ∞ V

Differential Driver Output V

Figure 5, R = 27Ω 2.1 V

Change in Magnitude of

Differential Output Voltage

∆V

Figure 5, R = 50Ω or 27Ω (Note 2) 0.2 V

Driver Common-Mode Output

Voltage

Figure 5, R = 50Ω or 27Ω 3V

Change in Magnitude of

Common-Mode Voltage

∆V

Figure 5, R = 50Ω or 27Ω (Note 2) 0.2 V

Input High Voltage V

DE, DI, RE, SHDN 2.0 V

Input Low Voltage V

DE, DI, RE, SHDN 0.8 V

Input Hysteresis V

HYS

DE, DI, RE, SHDN 50 mV

= +12V +125

Output Leakage (Y and Z) Full

Duplex

DE = GND, V

GND or +5.25V

= -7V -100

µA

Input Current I

DI, RE, DE, SHDN ±1µA

Pulldown Current RXP = TXP = V

51530µA

0 ≤ V

OUT

≤ +12V, output low +250

Driver Short-Circuit Output

Current (Note 3)

OSD

-7V ≤ V

OUT

≤ V

, output high -250

- 1V) ≤ V

OUT

≤ +12V, output low +25

Driver Short-Circuit Foldback

Output Current (Note 3)

OSFD

-7V ≤ V

OUT

≤ +1V, output high +25

Thermal-Shutdown Threshold 140 °C

RECEIVER

Differential Input Capacitance C

A, B

Between A and B 8 pF

= +12V +250

Input Current (A and B) Full

Duplex

A, B

DE = GND,

= GND or +5.25V

= -7V -200

µA

1 2 3 4 5 6 7 ... 13 14

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