6

Driver Enable from Shutdown to

Output Low

Full

-

-

2000

ns

Receiver Enable from Shutdown to

Output High

Full

-

-

2500

ns

Receiver Enable from Shutdown to

Output Low

Full

-

-

2500

ns

ESD PERFORMANCE

RS-485 Pins (A/Y, B/Z)

Human Body Model

25

-

±15

-

kV

All Other Pins

25

-

>

±7-

kV

NOTES:

2. 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.

3. Supply current specification is valid for loaded drivers when DE = 0V.

4. Applies to peak current. See “Typical Performance Curves” for more information.

5. When testing the ISL8483E, keep RE = 0 to prevent the device from entering SHDN.

6. When testing the ISL8483E, the RE signal high time must be short enough (typically <200ns) to prevent the device from entering SHDN.

7. The ISL8483E is put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 50ns, the parts are guaranteed

not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See “Low-Power

Shutdown Mode” section.

9. Set the RE signal high time >600ns to ensure that the device enters SHDN.

10. Devices meeting these limits are denoted as “single unit load (1 UL)” transceivers. The RS-485 standard allows up to 32 Unit Loads on the bus.

11. Guaranteed by characterization, but not tested.

Test Circuits and Waveforms

Electrical Specifications

PARAMETER

SYMBOL

TEST CONDITIONS

TEMP

(°C)

MIN

TYP

MAX

UNITS

D

DE

DI

R

R

Z

Y

ISL8483E, ISL8485E