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LTC485CS8 데이터시트(PDF) 6 Page - Linear Technology

부품명 LTC485CS8
상세설명  Low Power RS485 Interface Transceiver
PDF  14 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC485CS8 데이터시트(HTML) 6 Page - Linear Technology

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LTC485
6
485fi
swiTching TiMe waveForMs
TesT circuiTs
VOD
A
B
R
R
VOC
485 F01
Figure 1. Driver DC Test Load
Figure 2. Receiver Timing Test Load
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2
RECEIVER
OUTPUT
CRL
15pF
1k
S1
S2
TEST POINT
VCC
1k
485 F02
3V
DE
A
B
DI
RDIFF
CL1
CL2
RO
15pF
A
B
RE
485 F03
OUTPUT
UNDER TEST
CL
S1
S2
VCC
500
Ω
485 F04
Figure 5. Driver Propagation Delays
DI
3V
1.5V
tPLH
tr
tSKEW
1/2 VO
VO
80%
10%
0V
B
A
VO
–VO
0V
90%
1.5V
tPLH
tSKEW
1/2 VO
f = 1MHz, tr ≤ 10ns, tf ≤ 10ns
20%
tf
VDIFF = V(A) – V(B)
485 F05



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