6

SP486E/487EDS/06

SP486E/487E Enhanced Quad RS-485/RS-422 Line Drivers

© Copyright 2000 Sipex Corporation

3V

0V

5V

0V

Output normally low

EN

1.5V

1.5V

2.3V

A, B

0.5V

2.3V

0.5V

Output normally high

Figure 5. Driver Enable/Disable Timing

R

C

C

S

R

S

SW1

SW1

SW2

SW2

Device

Under

Test

DC Power

Source

SW1

SW2

Figure 6. ESD Test Circuit for Human Body Model

R

RS

S and

and R

RV

V add up to 330

add up to 330

Ω

Ω ffor IEC1000-4-2.

or IEC1000-4-2.

RS and RV add up to 330Ω for IEC1000-4-2.

Contact-Discharge Module

Contact-Discharge Module

R

R

C

C

R

SW1

SW1

SW2

SW2

Device

Under

Test

DC Power

Source

SW1

SW2

Contact-Discharge Module

Figure 7. ESD Test Circuit for IEC1000-4-2

V

CC