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SP3483 Datasheet(PDF) 5 Page - Sipex Corporation

Part No. SP3483
Description  3.3V Low Power Slew Rate Limited Half-Duplex RS-485 Transceiver
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Maker  SIPEX [Sipex Corporation]
Homepage  http://www.sipex.com
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SP3483 Datasheet(HTML) 5 Page - Sipex Corporation

   
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5
SP3483 DS/04
SP3483 Low Power Slew Rate Limited Half-Duplex RS485 Transceivers
© Copyright 2000 Sipex Corporation
INPUTS
OUTPUTS
LINE
RE
DE
DI CONDITION
B
A
X
1
1
No Fault
0
1
X
1
0
No Fault
1
0
X0
X
X
ZZ
INPUTS
OUTPUTS
RE
DE
A - B
R
0
0
+0.2V
1
0
0
-0.2V
0
0
0
Inputs Open
1
10
X
Z
Table 1. Transmit Function Truth Table
Table 2. Receive Function Truth Table
Figure 2. Driver Propagation Delay Test Circuit
Figure 4. Driver Enable and Disable Timing Circuit,
Output HIGH
Figure 1. Driver DC Test Load Circuit
Figure 6. Receiver Propagation Delay Test Circuit
Figure 7. Receiver Enable and Disable Timing Circuit
R
R
VOC
D
VCC
VOD
GENERATOR
(NOTE 1)
50
VCC
S1
VDM
RL = 27
OUT
CL = 15pF
(NOTE 2)
VOM =
1.5V
VOH + VOL
2
D
GENERATOR
(NOTE 1)
50
S1
RL = 110
OUT
CL = 50pF
(NOTE 2)
VOM =
1.5V
VOH + VOL
2
D
GENERATOR
(NOTE 1)
50
S1
RL = 110
OUT
CL = 50pF
(NOTE 2)
D
0V OR 3V
VCC
GENERATOR
(NOTE 1)
50
1.5V
0V
VID
R
OUT
CL = 15pF
(NOTE 2)
VOM = VCC
2
1.5V
-1.5V
S3
VID
GENERATOR
(NOTE 1)
50
CL = 15pF
(NOTE 2)
R
1k
S1
S2
VCC
Figure 5. Driver Enable and Disable Timing Circuit,
Output LOW
GENERATOR
(NOTE 1)
50
CL
OUT
D
VCC
RL =
60
CL = 15pF (NOTE 2)
Figure 3. Driver Differential Output Delay and Transition
Time Circuit


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