ST3485E Datasheet, PDF (1/16 Pages) STMicroelectronics – 3.3V POWERED, 15KV ESD PROTECTED, TRASMIT AT UP TO 12MBPS TRUE RS-485/RS-422 TRANSCEIVER

ST3485E
3.3V POWERED, 15KV ESD PROTECTED, TRASMIT AT
UP TO 12MBPS TRUE RS-485/RS-422 TRANSCEIVER
s ESD PROTECTION:
±15KV HUMAN BODY MODEL
±8KV IEC 1000-4-2 CONTACT DISCHARGE
s OPERATE FROM A SINGLE 3.3V SUPPLY -
NO CHARGE PUMP REQUIRED
s INTEROPERABLE WITH 5V LOGIC
s 1µA LOW CURRENT SHUTDOWN MODE
MAX
s GUARANTEED 12 Mbps DATA RATE
s -7 TO 12 COMMON MODE INPUT VOLTAGE
RANGE
s HALF DUPLEX VERSIONS AVAILABLE
s INDUSTRY STANDARD 75176 PINOUT
s CURRENT LIMITING AND THERMAL
SHUTDOWN FOR DRIVER OVERLOAD
PROTECTION
s GUARANTEED HIGH RECEIVER OUTPUT
STATE FOR FLOATING INPUTS WITH NO
SIGNAL PRESENT
s ALLOW UP TO 64 TRANSCEIVERS ON THE
BUS
DESCRIPTION
The ST3485E is ±15kV ESD protected, 3.3V low
power transceiver for RS-485 and RS-422
communications. The device contains one driver
DIP
SOP
and one receiver in half duplex configuration. The
ST3485E transmit and receive at guaranteed data
rate at least to 12Mbps.
All transmitter outputs and receiver inputs are
protected to ±15kV using Human Body Model.
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 ST3485E input has a true fail-safe feature
that guarantees a logic high output if both inputs
are open circuit, shorted together or in presence of
the termination with no signal on the bus.
ORDERING CODES
Type
ST3485ECN
ST3485EBN
ST3485ECD
ST3485EBD
ST3485ECDR
ST3485EBDR
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
October 2002
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