MAX14770E datasheet(2/15 Pages) MAXIM

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High-ESD Profibus RS-485 Transceiver

2 ______________________________________________________________________________________

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.

(Voltages referenced to GND.)

VCC.......................................................................-0.3V to +6.0V

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

DE, DI ...................................................................-0.3V to +6.0V

A, B.....................................................................-8.0V to +13.0V

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

Continuous Power Dissipation (TA = +70NC)

8-Pin SOIC (derate 7.6mW/NC above +70NC) ............606mW

8-Pin TDFN (derate 24.4mW/NC above +70NC)........1951mW

Junction-to-Ambient Thermal Resistance (BJA) (Note 1)

8-Pin SO....................................................................132NC/W

8-Pin TDFN..................................................................41NC/W

Junction-to-Case Thermal Resistance (BJC) (Note 1)

8-Pin SO......................................................................38NC/W

8-Pin TDFN....................................................................8NC/W

Operating Temperature Range

8-Pin SO......................................................... -40NC to +85NC

8-Pin TDFN................................................... -40NC to +125NC

Storage Temperature Range............................ -65NC to +150NC

Junction Temperature Range........................... -40NC to +150NC

Lead Temperature (soldering, 10s) ................................+300NC

ELECTRICAL CHARACTERISTICS

(VCC = +5V Q10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, TA = +25NC.) (Note 2)

ABSOLUTE MAXIMUM RATINGS

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic/thermal-tutorial.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Power-Supply Range

VCC

4.5

5.5

Supply Current

ICC

DE = 1, RE = 0 or

DE = 0, RE = 0 or

DE = 1, RE = 1; no load

2.5

Shutdown Supply

Current

ISH

DE = 0, RE = 1

DRIVER

Differential Driver

Output

|VOD|

RL = 54I, VDI = VCC or GND; Figure 1

2.1

Differential Driver

Peak-to-Peak Output

VODPP

Figure 2 (Note 3)

4.0

6.8

Change in Magnitude

of Differential Output

Voltage

VOD

RL = 54I; Figure 1 (Note 4)

-0.2

+0.2

Driver Common-

Mode Output Voltage

VOC

RL = 54I; Figure 1

1.8

Change in Common-

Mode Voltage

VOC

RL = 54I; Figure 1 (Note 4)

-0.2

+0.2

Driver Short-Circuit

Output Current

(Note 5)

IOSD

0V P VOUT P +12V; output low

+250

-7V P VOUT P VCC; output high

-250

Driver Short-Circuit

Foldback Output

Current (Note 5)

IOSDF

(VCC - 1V) P VOUT P +12V; output low

-15

-7V P VOUT P +1V; output high

+15

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