MAX3485ESA datasheet(2/16 Pages) MAXIM

2 / 16 page

3.3V-Powered, 10Mbps and Slew-Rate-Limited

True RS-485/RS-422 Transceivers

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC = 3.3V ±0.3V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°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.

Supply Voltage (VCC) ...............................................................7V

Control Input Voltage (RE, DE) ...................................-0.3V to 7V

Driver Input Voltage (DI) .............................................-0.3V to 7V

Driver Output Voltage (A, B, Y, Z)..........................-7.5V to 12.5V

Receiver Input Voltage (A, B) ................................-7.5V to 12.5V

Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V)

Continuous Power Dissipation (TA = +70°C)

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 10mW/°C above +70°C) ......800mW

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

Operating Temperature Ranges

MAX34_ _C_ _.......................................................0°C to +70°C

MAX34_ _E_ _ ....................................................-40°C to +85°C

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

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

DE = 0V,

VCC = 0V or 3.6V

DE = 0V, RE = VCC,

VCC = 0V or 3.6V, MAX3491

DE = 0V, RE = 0V,

VCC = 0V or 3.6V, MAX3491

Ω

RIN

Receiver Input Resistance

µA

±1

IOZR

Three-State (High Impedance)

Output Current at Receiver

0.4

VOL

Receiver Output Low Voltage

VCC - 0.4

VOH

Receiver Output High Voltage

∆VTH

Receiver Input Hysteresis

-0.2

0.2

VTH

Receiver Differential

Threshold Voltage

µA

-1

Output Leakage (Y, Z)

in Shutdown Mode

µA

-20

Output Leakage (Y, Z)

0.2

∆VOD

Change in Magnitude of Driver

Differential Output Voltage for

Complementary Output States

(Note 1)

1.5

VOD

2.0

Differential Driver Output

-0.8

IIN2

Input Current (A, B)

1.0

µA

±2

IIN1

Logic Input Current

VOC

Driver Common-Mode Output

Voltage

0.2

∆VOC

Change in Magnitude of

Common-Mode Output Voltage

(Note 1)

2.0

VIH

Input High Voltage

0.8

VIL

Input Low Voltage

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

RL = 54Ω or 100Ω, Figure 4

-7V

≤ VCM ≤ 12V

RL = 54Ω (RS-485), Figure 4

VCC = 3.6V, 0V ≤ VOUT ≤ VCC

RL = 100Ω (RS-422), Figure 4

IOUT = 2.5mA, VID = 200mV, Figure 6

IOUT = -1.5mA, VID = 200mV, Figure 6

VCM = 0V

VOUT = 12V

VIN = -7V

-7V

≤ VCM ≤ 12V

VOUT = -7V

VIN = 12V

DE, DI, RE

RL = 54Ω or 100Ω, Figure 4

DE, DI, RE

VOUT = 12V

DE, DI, RE

VOUT = -7V

CONDITIONS

RL = 60Ω (RS-485), VCC = 3.3V, Figure 5

1.5

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