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ISL8483 Datasheet(PDF) 3 Page - Intersil Corporation

Part No. ISL8483
Description  5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
Download  16 Pages
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ISL8483 Datasheet(HTML) 3 Page - Intersil Corporation

 
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3
Truth Tables
TRANSMITTING
INPUTS
OUTPUTS
RE
DE
DI
Z
Y
X
1101
X
1010
0
0
X
High-Z
High-Z
1
0
X
High-Z *
High-Z *
*Shutdown Mode for ISL8483 (see Note 7)
RECEIVING
INPUTS
OUTPUT
RE
DE
Half Duplex
DE
Full Duplex
A-B
RO
00
X
≥ +0.2V
1
00
X
≤ -0.2V
0
0
0
X
Inputs Open
1
100
X
High-Z *
111
X
High-Z
*Shutdown Mode for ISL8483 (see Note 7)
Pin Descriptions
PIN
FUNCTION
RO
Receiver output: If A > B by at least 0.2V, RO is high; If A < B by 0.2V or more, RO is low; RO = High if A and B are unconnected (floating).
RE
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high.
DE
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low.
DI
Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.
GND
Ground connection.
A/Y
Noninverting receiver input and noninverting driver output. Pin is an input (A) if DE = 0; pin is an output (Y) if DE = 1.
B/Z
Inverting receiver input and inverting driver output. Pin is an input (B) if DE = 0; pin is an output (Z) if DE = 1.
A
Noninverting receiver input.
B
Inverting receiver input.
Y
Noninverting driver output.
Z
Inverting driver output.
VCC
System power supply input (4.5V to 5.5V).
NC
No Connection.
ISL8483, ISL8485, ISL8488, ISL8489, ISL8490, ISL8491


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