LTC485CS8TR View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC485CS8TR Datasheet PDF : 14 Pages
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Switching Time Waveforms
3V
DI
0V
5V
A, B
VOL
VOH
A, B
0V
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
1.5V
tZL
tLZ
2.3V
OUTPUT NORMALLY LOW
0.5V
2.3V
OUTPUT NORMALLY HIGH
0.5V
tZH
tHZ
Figure 6. Driver Enable and Disable Times
VOH
R
VOL
VOD2
A, B
–VOD2
1.5V
OUTPUT
1.5V
tPHL
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns tPLH
0V
INPUT
Figure 7. Receiver Propagation Delays
3V
RE
0V
5V
R
R
0V
1.5V
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
tZL
tLZ
1.5V
OUTPUT NORMALLY LOW
1.5V
0.5V
1.5V
OUTPUT NORMALLY HIGH
0.5V
tZH
tHZ
Figure 8. Receiver Enable and Disable Times
LTC485
485 F06
485 F07
485 F08
Function Tables
LTC485 Transmitting
INPUTS
RE
DE
DI
X
1
1
X
1
0
X
0
X
X
1
X
LINE
CONDITION
No Fault
No Fault
X
Fault
OUTPUTS
B
A
0
1
1
0
Z
Z
Z
Z
LTC485 Receiving
RE
0
0
0
1
INPUTS
DE
0
0
0
0
A–B
≥ 0.2V
≤ –0.2V
Inputs Open
X
OUTPUTS
R
1
0
1
Z
485fi
7
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