ST490A Datasheet, PDF (1/11 Pages) STMicroelectronics – LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER

ST490A
LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
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
DIP
SOP
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
ST490ACN
ST490ABN
ST490ACD
ST490ABD
ST490ACDR
ST490ABDR
Temperature
Range
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
Package
DIP-8
DIP-8
SO-8 (Tube)
SO-8 (Tube)
SO-8 (Tape & Reel)
SO-8 (Tape & Reel)
Comments
50parts per tube / 40tube per box
50parts per tube / 40tube per box
100parts per tube / 20tube per box
100parts per tube / 20tube per box
2500 parts per reel
2500 parts per reel
November 2002
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