Figure 13. Receiver enable/disable times with driver disabled

1kΩ ± 1%

CL=15pF ± 20%

VL

VI

50Ω

50%

tPZH(2)

VI

VO

VL

VOL

0V

VL

≈ 0V

VO

50%

50%

tPZL(2)

VOH

A at 1.5V

B at 0V

S1 to GND

0V or 1V5

1V5 or 0V

A

B

S1

A at 0 V

B at 1.5 V

S1 to VL

Figure 14. Short-circuit output current measurement

A

B

ISHORT

ISHORT

vSHORT

vSHORT

When one of the driver output is shorted to a voltage source (named VSHORT) between -7 V to +12 V stabilized,

the current does not exceed 250 mA and the driver is protected.

STR485E

Test circuits and typical characteristics

DS13051 - Rev 3

page 14/26