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ISL32450E Folha de dados(PDF) 4 Page - Intersil Corporation

Nome de Peças ISL32450E
Descrição Electrónicos  짹60V Fault Protected, 3.3V to 5V, 짹20V Common Mode Range, RS-485/RS-422 Transceivers with Cable Invert and 짹15kV ESD
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Fabricante Electrônico  INTERSIL [Intersil Corporation]
Página de início  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL32450E Folha de dados(HTML) 4 Page - Intersil Corporation

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ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E
4
FN7921.0
February 20, 2012
Pin Descriptions
PIN
NAME
ISL32450E,
ISL32453E,
(14 LD SOIC)
PIN #
ISL32450E,
ISL32453E,
(10 LD MSOP)
PIN #
ISL32452E,
ISL32455E
(8 LD SOIC,
8 LD MSOP)
PIN #
ISL32457E
(8 LD SOIC,
8 LD MSOP)
PIN #
FUNCTION
RO
2
1
1
1
Receiver output. For parts without the cable invert function - or if INV is low -
then: If A - B
≥ -10mV, RO is high; if A - B ≤ -200mV, RO is low. If INV is high, then:
If B - A
≥ -10mV, RO is high; if B - A ≤ -200mV, RO is low. In all cases, RO = High
if A and B are unconnected (floating), or shorted together, or connected to an
undriven, terminated bus (i.e., Rx is always failsafe open, shorted, and idle, even
if polarity is inverted).
RE
3
2
2
N/A
Receiver output enable. RO is enabled when RE is low; RO is high impedance
when RE is high. Internally pulled low.
DE
4
3
3
3
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE
high, and they are high impedance when DE is low. Internally pulled high.
DI
5
4
4
4
Driver input. For parts without the cable invert function - or if INV is low - a low
on DI forces output Y low and output Z high, while a high on DI forces output Y
high and output Z low. The output states, relative to DI, invert if INV is high.
GND
6, 7
5
5
5
Ground connection.
A/Y
N/A
N/A
6
6
±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 I/O pin. For
parts without the cable invert function - or if INV is low - A/Y is the non-inverting
receiver input and non-inverting driver output. If INV is high, A/Y is the inverting
receiver input and the inverting driver output. Pin is an input if DE = 0; pin is
an output if DE = 1.
B/Z
N/A
N/A
7
7
±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 I/O pin. For
parts without the cable invert function - or if INV is low - B/Z is the inverting
receiver input and inverting driver output. If INV is high, B/Z is the non-inverting
receiver input and the non-inverting driver output. Pin is an input if DE = 0; pin
is an output if DE = 1.
A
12
9
N/A
N/A
±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 non-inverting
receiver input.
B
11
8
N/A
N/A
±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 inverting
receiver input.
Y
9
6
N/A
N/A
±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 non-inverting
driver output.
Z
10
7
N/A
N/A
±60V Fault Protected and ±15kV ESD protected RS-485/RS-422 inverting
driver output.
VCC
14
10
8
8
System power supply input (3V to 5.5V).
INV
N/A
N/A
N/A
2
Receiver and driver Cable Invert (polarity selection) input. When driven high
this pin swaps the polarity of the driver output and receiver input pins. If
unconnected (floating) or connected low, normal RS-485 polarity conventions
apply. Internally pulled low.
NC
1, 8, 13
N/A
N/A
N/A
No Internal Connection.


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