ISL33334E, ISL33337E

9

FN8776.1

October 21, 2016

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NOTES:

10. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise

specified.

11. Supply current specification is valid for loaded RS-485 (port 2) drivers when DE485 = 0V.

12. Applies to peak current. See “Typical Performance Curves on page 12” for more information.

14. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.

PARAMETER

SYMBOL

TEST CONDITIONS

TEMP

(°C)

MIN

MAX

Test Circuits and Waveforms

FIGURE 3A. TEST CIRCUIT

FIGURE 3B. MEASUREMENT POINTS

FIGURE 3. RS-485 DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES

D

DE485

DI

R

R

Z

Y

D

DE485

DI

SIGNAL

GENERATOR

Z

Y

OUT (Y)

3V

0V

50%

50%

50%

50%

OUT (Z)

50%

50%

DIFF OUT (Y - Z)

90%

90%

10%

10%

DI

0V

0V