MAX3440E(2002) 查看數據表（PDF） - Maxim Integrated

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MAX3440E
(Rev.:2002)

±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

Maxim Integrated 

±15kV ESD-Protected, ±60V Fault-Protected,

10Mbps, Fail-Safe RS-485/J1708 Transceivers

ABSOLUTE MAXIMUM RATINGS

Voltages Referenced to GND

VCC ........................................................................................+7V

FAULT, DE/RE, RE, DE, DE, DI, TXD..........-0.3V to (VCC + 0.3V)

A, B (Note 1) ........................................................................±60V

RO ..............................................................-0.3V to (VCC + 0.3V)

Short-Circuit Duration (RO, A, B) ...............................Continuous

Continuous Power Dissipation (TA = +70°C)

8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW

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

Operating Temperature Ranges

MAX344_EE_ _ ...............................................-40°C to +85°C

MAX344_EA_ _ .............................................-40°C to +125°C

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

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

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

Note 1: A, B must be terminated with 54Ω or 100Ω to guarantee ±60V fault protection.

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.

DC ELECTRICAL CHARACTERISTICS

(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)

PARAMETER

DRIVER

Differential Driver Output

Change in Magnitude of

Differential Output Voltage

SYMBOL

CONDITIONS

VOD

∆VOD

Figure 1, RL = 100Ω

Figure 1, RL = 54Ω

Figure 1, RL = 100Ω or 54Ω (Note 2)

MIN TYP MAX

2

VCC

1.5

VCC

0.2

Driver Common-Mode

Output Voltage

VOC Figure 1, RL = 100Ω or 54Ω

VCC / 2 3

Change in Magnitude of

Common-Mode Voltage

∆VOC Figure 1, RL = 100Ω or 54Ω (Note 2)

0.2

DRIVER LOGIC

Driver Input High Voltage

Driver Input Low Voltage

Driver Input Current

Driver Short-Circuit Output Current

(Note 3)

Driver Short-Circuit Foldback

Output Current

RECEIVER

Input Current

Receiver Differential Threshold

Voltage

VDIH

VDIL

IDIN

IOSD

IOSDF

0 ≤ VOUT ≤ +12V

-7V ≤ VOUT ≤ VCC

(VCC - 1V) ≤ VOUT ≤ +12V (Note 3)

-7V ≤ VOUT ≤ +1V (Note 3)

VCC = GND, VA, B = 12V

IA,B A, B VA, B = -7V

VA, B = ±60V

VTH -7V ≤ VCM ≤ +12V

2

-350

+25

-200

0.8

±2

+350

-25

250

-150

±6

-50

Receiver Input Hysteresis

∆VTH

25

UNITS

V

V

V

V

V

V

µA

mA

mA

µA

mA

mV

mV

2 _______________________________________________________________________________________

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