ST3485EB, ST3485EC, ST3485EI, ST3485EIY

Test circuits and typical characteristics

DocID9102 Rev 11

13/24

Figure 10: Drive propagation time waveform

Figure 11: Drive enable and disable times test circuit (pull-up configuration)

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 A

OUT B

1.5 V

1.5 V

3 V

0 V

t PHL

t PLH

VOM

VOM

t PHL

t PLH

VOM

VOM

VOH

VOL

VOH

VOL

VCC

RL = 110 Ω

OUT

CL = 50 pF

(2)

S1

D

0 V or 3 V

IN

(1)