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LTC1535CSW Datasheet(PDF) 12 Page - Linear Technology

Part # LTC1535CSW
Description  Isolated RS485 Transceiver
PDF  18 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1535CSW Datasheet(HTML) 12 Page - Linear Technology

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LTC1535
12
1535fb
APPLICATIONS INFORMATION
Table 1. List of Transformers Designed for LTC1535
MANUFACTURER
PART NUMBER
DC ISOLATION
VOLTAGE
(1 SECOND)
PHONE NUMBER
Cooper
CTX02-14659
500V
(888) 414-2645
Cooper
CTX02-14608
3.75kVAC
(888) 414-2645
Epcos AG (Germany)
(USA)
B78304-A1477-A3
500V
(0 89) 636-2 80 00
(800) 888-7724
Midcom
31160R
1.25kV
(605) 886-4385
Minntronix
4810796R
3kVAC
(605) 884-0195
Pulse FEE (France)
P1597
500V
(33) 3 84 35 04 04
Sumida (Japan)
S-167-5779
100V
03-3667-3320
Transpower
TTI7780-SM
500V
(775) 852-0140
Table 2. Fault Mode Behavior
FUNCTION (PINS)
VCC > VUVH
VCC2 > VUVH
VCC < VUVL
VCC2 > VUVH
VCC > VUVH
VCC2 < VUVL
VCC < VUVL
VCC2 > VUVL
THERMAL
SHUTDOWN
DC/DC Converter (2, 3)
On
On
On
On
Off
RO (28)
RE = 0V
Active
Forced-High
Forced-High
Forced High
Forced-High
RE = VCC
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
RE = Floating
Active
Hi-Z
Hi-Z
Hi-Z
Hi-Z
RO2 (17)
Active
Active
Active
Active
Active
Driver Outputs
Y and Z (13, 12)
Active
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Communiactions Across
Isolation Barrier
Active
Disabled
Disabled
Disabled
Disabled
Fault Indicator on RE (27)
Low
High
High
High
High
Table 3. Driver Function Table
INPUTS
OUTPUTS
RE
DE
DI
Y
Z
X1
1
1
0
X1
0
0
1
X0
X
Z
2
Note: Z = high impedance, X = don’t care
Table 4. Receiver Function Table
INPUTS
OUTPUTS
RE
DE
A-B
RO
R02
0
X
≥ VTH(MAX
11
0
X
≤ VTH(MIN)
00
0
X
Inputs Open
1
1
0
X
Inputs Shorted
1
1
1
X
≥ VTH(MAX)
Z1
1
X
≤ VTH(MIN)
Z0
1
X
Inputs Open
Z
1
1
X
Inputs Shorted
Z
1
Note: Z = high impedance, X = don’t care



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