ST485A Datasheet, PDF (1/19 Pages) STMicroelectronics – Very high speed low power RS-485/RS-422 transceiver

ST485A
Very high speed
low power RS-485/RS-422 transceiver
General features
s Low supply current: 5mA max
s High data rate > 30Mbps
s Designed for RS 485 interface applications
s -7 to 12 common mode input voltage range
s Driver maintains high impedance in 3-state or
with the power off
s 70mV typical input hysteresis
s Operate from single 5 supply
s ±4kV ESD protection
s Current limiting and thermal shutdown for
driver overload protection
s Latch-up free up to 500mA
Description
The ST485A is a low power, high speed
transceiver for RS-485 and RS-422
communications. The device contains one driver
and one receiver in half duplex configuration. The
ST485A draws 3mA (typ.) of supply current when
unloaded or fully loaded with disabled drivers. It
operates from a single 5V supply.
DIP-8
SO-8
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.
The ST485A is designed for bi-directional data
communications or multipoint bus transmission
lines.
Order code
Part number Temperature range
ST485ACN
ST485ABN
ST485ACDR
0 to 70 °C
-40 to 85 °C
0 to 70 °C
ST485ABDR
-40 to 85 °C
March 2006
Package
DIP-8
DIP-8
SO-8 (Tape & reel)
SO-8 (Tape & reel)
Rev 2
Comments
50parts per tube / 40tube per box
50parts per tube / 40tube per box
2500 parts per reel
2500 parts per ree
1/19
www.st.com
19