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ISL81387 Datasheet(PDF) 3 Page - Intersil Corporation

Part # ISL81387
Description  ±15kV ESD Protected, 5V, Dual Protocol (RS-232/RS-485) Transceivers
PDF  27 Pages
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL81387 Datasheet(HTML) 3 Page - Intersil Corporation

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ISL81387, ISL41387
3
FN6201.4
June 9, 2014
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TABLE 2. ISL81387 FUNCTION TABLE
INPUTS
RECEIVER OUTPUTS
DRIVER OUTPUTS
DRIVER
SPEED
(Mbps)
CHARGE
PUMPS
(Note 3)
LOOPBACK
(Note 4)MODE
485/232
ON
RXEN
DEN
SLEW
RA
RB
YZ
0
1
0
0
N.A.
High-Z
High-Z
High-Z
High-Z
-
ON
OFF
RS-232
0
1
0
1
N.A.
High-Z
High-Z
ON
ON
0.46
ON
OFF
RS-232
0
1
1
0
N.A.
ON
ON
High-Z
High-Z
-
ON
OFF
RS-232
0
1
1
1
N.A.
ON
ON
ON
ON
0.46
ON
OFF
RS-232
0
0
0
1
N.A.
High-Z
High-Z
ON
High-Z
0.46
ON
OFF
RS-232
0
0
1
0
N.A.
High-Z
ON
ON
High-Z
0.46
ON
OFF
RS-232
0
0
1
1
N.A.
ON
ON
ON
ON
0.46
ON
ON
RS-232
X
0
0
0
X
High-Z
High-Z
High-Z
High-Z
-
OFF
OFF
Shutdown
1
1
0
0
X
High-Z
High-Z
High-Z
High-Z
-
OFF
OFF
RS-485
1
X
0
1
1/0
High-Z
High-Z
ON
ON
20/0.46
OFF
OFF
RS-485
1
X
1
0
X
ON
High-Z
High-Z
High-Z
-
OFF
OFF
RS-485
1
1
1
1
1/0
ON
High-Z
ON
ON
20/0.46
OFF
OFF
RS-485
1
0
1
1
1/0
ON
High-Z
ON
ON
20/0.46
OFF
ON
RS-485
NOTES:
3. Charge pumps are on if in RS-232 mode and ON or DEN or RXEN are high.
4. Loopback is enabled when ON = 0, and DEN = RXEN = 1.
ISL81387 Truth Tables
RS-232 TRANSMITTING MODE
INPUTS (ON = 1)
OUTPUTS
485/232
DEN
DY
DZ
YZ
0
100
11
0
101
10
0
110
01
0
111
00
0
0
X
X
High-Z
High-Z
RS-232 RECEIVING MODE
INPUTS (ON = 1)
OUTPUT
485/232
RXEN
A
B
RA
RB
0
100
11
0
101
10
0
110
01
0
111
00
0
1
Open
Open
1
1
0
0
X
X
High-Z
High-Z
RS-485 TRANSMITTING MODE
INPUTS (ON = 1)
OUTPUTS
485/232
DEN
DY
SLEW
Y
Z
DATA RATE
(Mbps)
11
0
1
1
0
20
11
1
1
0
1
20
1
1
0
0
1
0
0.46
1
1
1
0
0
1
0.46
1
0
X
X
High-Z High-Z
-
RS-485 RECEIVING MODE
INPUTS (ON = 1)
OUTPUT
485/232
RXEN
B-A
RA
RB
11
 -40mV
1
High-Z
11
 -200mV
0
High-Z
1
1
Open or Shorted together
1
High-Z
1
0
X
High-Z
High-Z



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