ST3485EB, ST3485EC, ST3485EI, ST3485EIY

Test circuits and typical characteristics

DocID9102 Rev 11

15/24

Figure 14: Receiver propagation delay time waveforms

Figure 15: Receiver enable and disable times test circuit

1.

The input pulse is supplied by a generator with the following characteristics: PRR =

250 kHz, 50 % duty cycle, tr ≤ 6.0 ns.

2.

IN

OUT

1.5 V

1.5 V

t RPLH

t RPHL

VOM

VOM = VCC/2

VOM

3.0 V

0 V

VCC

0 V

1.5 V

-1.5 V

IN

(1)

S3

VID

R

OUT

CL

(2)

1 kΩ

S1

S2

VCC