MAX14770E_13 datasheet(3/16 Pages) MAXIM

Part #	MAX14770E

Description	High-ESD Profibus RS-485 Transceiver

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Manufacturer	MAXIM [Maxim Integrated Products]

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Maxim Integrated

High-ESD Profibus RS-485 Transceiver

MAX14770E

ELECTRICAL CHARACTERISTICS (continued)

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Driver Short-Circuit

Foldback Output

Current (Note 5)

IOSDF

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

-15

mA

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

+15

LOGIC INPUTS

Driver Input High

Voltage

VIH

DE, DI, RE

2.0

V

Driver Input Low

Voltage

VIL

DE, DI, RE

0.8

V

Driver Input

Hysteresis

VHYS

DE, DI, RE

50

mV

Driver Input Current

IIN

DE, DI, RE

-1

+1

F

A

Input Impedance in

Hot Swap

RDE

Figure 11 until the first low-to-high transition of DE

occurs

1

5.6

10

k

W

RRE

Figure 11 until the first high-to-low transition of RE

occurs

RECEIVER

Input Current (A, B)

IA, IB

DE = GND, VCC = VGND or

+5.5V

VIN = 12V

+250

F

A

VIN = -7V

-200

Differential Input

Capacitance

CAB

Between A and B, DE = RE = GND at 6MHz

8

pF

Receiver Differential

Threshold Voltage

VTH

-7V P VCM P 12V

-200

-125

-50

mV

Receiver Input

Hysteresis

D

VTH

VCM = 0V

15

mV

LOGIC OUTPUT

Output High Voltage

VOH

IOUT = -6mA, VA - VB = VTH

4

V

Output Low Voltage

VOL

IOUT = 6mA, VA - VB = -VTH

0.4

V

Three-State Receiver

Output Current

IOZR

0V P VOUT P VCC

-1

+1

F

A

Receiver Input

Resistance

RIN

-7V P VCM P 12V

48

kI

Receiver Output

Short-Circuit Current

IOSR

0V P VRO P VCC

-110

+110

mA

PROTECTION SPECIFICATIONS

Thermal-Shutdown

Threshold

VTS

+160

N

C

Thermal-Shutdown

Hysteresis

VTSH

15

N

C

ESD Protection, A

and B Pins

HBM

±35

kV

IEC 61000-4-2 Air-Gap Discharge to GND

±20

IEC 61000-4-2 Contact Discharge to GND

±10

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Similar Description - MAX14770E_13

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