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LTC1483CS8 Datasheet(PDF) 5 Page - Linear Technology

No. de pieza LTC1483CS8
Descripción Electrónicos  Ultra-Low Power RS485 Low EMI Transceiver with Shutdown
PDF  8 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LTC1483CS8 Datasheet(HTML) 5 Page - Linear Technology

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5
LTC1483
TEST CIRCUITS
SWITCHI G TI E WAVEFOR S
3V
DE
A
B
DI
RDIFF
CL1
CL2
RO
15pF
A
B
RE
LTC1483 • F03
Figure 3. Driver/ Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load
OUTPUT
UNDER TEST
CL
S1
S2
VCC
500
Ω
LTC1483 • F04
VOD
A
B
R
R
VOC
LTC1483 • F01
RECEIVER
OUTPUT
CRL
1k
S1
S2
TEST POINT
VCC
1k
LTC1483 • F02
Figure 1. Driver DC Test Load
Figure 2. Receiver Timing Test Load
Figure 6. Driver Enable and Disable Times
1.5V
2.3V
2.3V
tZH(SHDN), tZH
tZL(SHDN), tZL
1.5V
tLZ
0.5V
0.5V
tHZ
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
DE
5V
VOL
VOH
0V
A, B
A, B
LTC1483 • F06
tr ≤ 10ns, tf ≤ 10ns
Figure 5. Driver Propagation Delays
DI
3V
1.5V
tPLH
tr
tSKEW
1/2 VO
VO
tr ≤ 10ns, tf ≤ 10ns
90%
10%
0V
B
A
VO
–VO
0V
90%
1.5V
tPHL
tSKEW
1/2 VO
10%
tf
VDIFF = V(A) – V(B)
LTC1483 • F05



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