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LTC1480IS8 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC1480IS8
Description  3.3V Ultra-Low Power RS485 Transceiver
PDF  8 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1480IS8 Datasheet(HTML) 5 Page - Linear Technology

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5
LTC1480
FU CTIO TABLES
LTC1480 Transmitting
INPUTS
OUTPUTS
RE
DE
DI
B
A
X11
0
1
X10
1
0
00
X
Z
Z
1
0
X
Z*
Z*
*Shutdown mode
LTC1480 Receiving
INPUTS
OUTPUTS
RE
DE
A – B
RO
00
≥0.2V
1
00
≤–0.2V
0
0
0
Inputs Open
1
10
X
Z*
*Shutdown mode
Figure 2. Receiver Timing Test Load
Figure 1. Driver DC Test Load
Figure 5. Driver Propagation Delays
SWITCHI G TI E WAVEFOR S
Figure 4. Driver Timing Test Load
Figure 3. Driver/Receiver Timing Test Circuit
VOD
A
B
R
R
VOC
LTC1480 • F01
RECEIVER
OUTPUT
CRL
1k
S1
S2
TEST POINT
VCC
1k
LTC1480 • F02
3V
DE
A
B
DI
RDIFF
CL1
CL2
RO
15pF
A
B
RE
LTC1480 • F03
LTC1480
RECEIVER
LTC1480
DRIVER
OUTPUT
UNDER TEST
CL
S1
S2
VCC
500
Ω
LTC1480 • F04
DI
3V
1.5V
tPLH
tr
tSKEW
1/2 VO
VO
f = 1MHz, 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)
LTC1480 • F05
TEST CIRCUITS



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