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STR485 Fiches technique(PDF) 13 Page - STMicroelectronics

No de pièce STR485
Description  3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250 kbps
PDF  24 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR485 Fiches technique(HTML) 13 Page - STMicroelectronics

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Figure 11. Receiver output rise and fall times and propagation delay
0V
VL
A
RE
VO
50%
tPLH
tPHL
VI
VO
10%
90%
tr
tf
VL
1V5
B
VI
0 V
VOL
VOH
50%
90%
10%
Figure 12. Receiver enable/disable times with driver enabled
1 kΩ ±1%
CL=15 pF±20%
VL
VI
50 Ω
50%
tPZH(1)
VI
VO
VL
50%
VOL
0V
VL
≈ 0V
tPHZ
90%
VO
50%
50%
tPZL(1)
10%
tPLZ
VOH
D at VL
S1 to GND
D at OV
S1 to VL
STR485
Test circuits and typical characteristics
DS12713 - Rev 1
page 13/24



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