MAX14943 datasheet(4/21 Pages) MAXIM

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DC Electrical Characteristics (continued)

(VDDA – VGNDA = 3.0V to 5.5V, VDDB – VGNDB = 4.5V to 5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at

VDDA – VGNDA = 3.3V, VDDB – VGNDB = 5V, VGNDA = VGNDB, and TA = +25°C.) (Notes 2, 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DRIVER

Differential Driver Output

|VOD|

RL = 54Ω, TXD = high or low,

DE = high, Figure 1a

2.1

RL = 100Ω, TXD = high or low,

DE = high, Figure 1a

2.9

-7V ≤ VCM ≤ +12V, Figure 1b

1.5

Differential Driver Peak-to-Peak

Output

VODPP

Figure 2 (Note 6)

4.0

6.8

Change in Magnitude of

Differential Driver Output Voltage

ΔVOD

RL = 54Ω, Figure 1b (Note 7)

-0.2

+0.2

Driver Common-Mode Output

Voltage

VOC

RL = 54Ω, Figure 1a

1.8

Change in Magnitude of

Common-Mode Voltage

ΔVOC

RL = 54Ω, Figure 1a (Note 7)

-0.2

+0.2

Driver Short-Circuit Output

Current

IOSD

GNDB ≤ VOUT ≤ +12V, output low

(Note 8)

+250

-7V ≤ VOUT ≤ VDDB, output high

(Note 8)

-250

Driver Short-Circuit Foldback

Output Current

IOSDF

(VDDB – 1V) ≤ VOUT ≤ +12V,

output low (Notes 5, 8)

+15

-7V ≤ VOUT ≤ +1V, output high

(Note 5, 8)

-15

RECEIVER

Input Current (A and B)

IA, IB

DE = GNDA,

VDDB = GNDB

or 5.5V

VIN = +12V

+250

µA

VIN = -7V

-200

Receiver Differential Threshold

Voltage

VTH

-7V ≤ VCM ≤ +12V

-200

-125

-50

Receiver Input Hysteresis

ΔVTH

VCM = 0V

Receiver Input Resistance

RIN

-7V ≤ VCM ≤ +12V, DE = low

kΩ

Differential Input Capacitance

CA,B

Measured between A and B,

DE = RE = GNDA at 6MHz

PROTECTION

Thermal-Shutdown Threshold

TSHDN

Temperature Rising

+160

°C

Thermal-Shutdown Hysteresis

THYST

°C

ESD Protection

(A and B Pins to GNDB)

Human Body Model

±35

IEC 61000-4-2 Air Gap Discharge

±12

IEC 61000-4-2- Contact Discharge

±10

ESD Protection (All Other Pins)

Human Body Model

±4

MAX14943

5kVRMS Isolated 20Mbps Half-Duplex PROFIBUS DP/

RS-485 Transceiver with ±35kV ESD Protection and

Integrated Transformer Driver

www.maximintegrated.com

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