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LTC485CS8 Fiches technique(PDF) 7 Page - Linear Technology

No de pièce LTC485CS8
Description  Low Power RS485 Interface Transceiver
PDF  14 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTC485CS8 Fiches technique(HTML) 7 Page - Linear Technology

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LTC485
7
485fi
swiTching TiMe waveForMs
Figure 6. Driver Enable and Disable Times
1.5V
tZL
2.3V
2.3V
tZH
1.5V
tLZ
0.5V
0.5V
tHZ
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
DI
5V
VOL
VOH
0V
A, B
A, B
485 F06
Figure 7. Receiver Propagation Delays
1.5V
tPHL
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
R
–VOD2
A, B
0V
1.5V
tPLH
OUTPUT
INPUT
VOD2
VOL
VOH
485 F07
Figure 8. Receiver Enable and Disable Times
1.5V
tZL
1.5V
1.5V
tZH
1.5V
tLZ
0.5V
0.5V
tHZ
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
RE
5V
0V
R
R
485 F08
FuncTion Tables
LTC485 Transmitting
INPUTS
LINE
CONDITION
OUTPUTS
RE
DE
DI
B
A
X
1
1
No Fault
0
1
X
1
0
No Fault
1
0
X
0
X
X
Z
Z
X
1
X
Fault
Z
Z
LTC485 Receiving
INPUTS
OUTPUTS
RE
DE
A – B
R
0
0
≥ 0.2V
1
0
0
≤ –0.2V
0
0
0
Inputs Open
1
1
0
X
Z



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