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ST490 Datenblatt(PDF) 1 Page - STMicroelectronics

Teilenummer ST490
Bauteilbeschribung  LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
PDF  11 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST490 Datenblatt(HTML) 1 Page - STMicroelectronics

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November 2002
s
LOW SUPPLY CURRENT: 5mA MAX
s
-7 TO 12 COMMON MODE INPUT VOLTAGE
RANGE
s
70mV TYPICAL INPUT HYSTERESIS
s
DESIGNED FOR 25Mbps OPERATION
s
OPERATE FROM SINGLE 5 SUPPLY
s
±4kV ESD PROTECTION
s
CURRENT LIMITING AND THERMAL
SHUTDOWN FOR DRIVER OVERLOAD
PROTECTION
DESCRIPTION
The ST490A is a low power transceiver for
RS-485 and RS-422 communications. The device
contains one driver and one receiver in full duplex
configuration. The ST490A draws 5mA (typ.) of
supply current when unloaded or fully loaded with
disabled drivers. It operates from a single 5V
supply.
Driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that place the driver
outputs into a high-impedance state. The receiver
input has a fail-safe feature that guarantees a
logic high output if both inputs are open circuit.
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST490ACN
0 to 70 °C
DIP-8
50parts per tube / 40tube per box
ST490ABN
-40 to 85 °C
DIP-8
50parts per tube / 40tube per box
ST490ACD
0 to 70 °C
SO-8 (Tube)
100parts per tube / 20tube per box
ST490ABD
-40 to 85 °C
SO-8 (Tube)
100parts per tube / 20tube per box
ST490ACDR
0 to 70 °C
SO-8 (Tape & Reel)
2500 parts per reel
ST490ABDR
-40 to 85 °C
SO-8 (Tape & Reel)
2500 parts per reel
ST490A
LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
DIP
SOP


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