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ST485ER Datasheet(PDF) 1 Page - STMicroelectronics

Part No. ST485ER
Description  5KV ESD PROTECTED, LOW POWER RS-485/RS-422 TRANSCEIVER
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST485ER Datasheet(HTML) 1 Page - STMicroelectronics

 
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September 2003
s
LOW QUIESCENT CURRENT: 300
µA
s
DESIGNED FOR RS-485 INTERFACE
APPLICATIONS
s
-7V TO 12V COMMON MODE INPUT
VOLTAGE RANGE
s
DRIVER MAINTAINS HIGH IMPEDANCE IN
3-STATE ORWITHTHE POWER OFF
s
70mV TYPICAL INPUT HYSTERESIS
s
30ns PROPAGATION DELAYS, 5ns SKEW
s
OPERATE FROM A SINGLE 5V SUPPLY
s
CURRENT LIMITING AND THERMAL
SHUTDOWN FOR DRIVER OVERLOAD
PROTECTION
s
ESD PROTECTION:
±15KV (H.B.M.)
±8KV (IEC-1000-4-2 CONTACT
DISCHARGE)
s
ALLOWS UP TO 256 TRANSCEIVERS ON
THE BUS
DESCRIPTION
The ST485E is al low power transceiver for
RS-485 and RS-422 communication. Each driver
output and receiver input is protected against
±15KV electrostatic discharge (H.B.M.) ±8KV
(IEC-1000-4-2 contact discharge) shocks, without
latchup. These parts contain one driver and one
receiver.
This transceiver draws 300
µA (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 places the driver
outputs into a high-impedance state.
The ST485E is designed for bi-directional data
communications on multipoint bus transmission
line (half-duplex applciations).
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST485ERCN
0 to 70 °C
DIP-8
50parts per tube / 40tube per box
ST485ERBN
-40 to 85 °C
DIP-8
50parts per tube / 40tube per box
ST485ERXN
-55 to 150 °C
DIP-8
50parts per tube / 40tube per box
ST485ERCD
0 to 70 °C
SO-8 (Tube)
100parts per tube / 20tube per box
ST485ERBD
-40 to 85 °C
SO-8 (Tube)
100parts per tube / 20tube per box
ST485ERXD
-55 to 150 °C
SO-8 (Tube)
100parts per tube / 20tube per box
ST485ERCDR
0 to 70 °C
SO-8 (Tape & Reel)
2500 parts per reel
ST485ERBDR
-40 to 85 °C
SO-8 (Tape & Reel)
2500 parts per reel
ST485ERXDR
-55 to 150 °C
SO-8 (Tape & Reel)
2500 parts per reel
ST485ER
±15KV ESD PROTECTED, LOW POWER
RS-485/RS-422 TRANSCEIVER
DIP
SOP


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