ST4485EB Datasheet, PDF (1/18 Pages) STMicroelectronics – Guaranteed 20 Mbps data rate

ST4485EB
3.3 V powered, 15 kV ESD protected, up to 20 Mbps RS-485/
RS-422 transceiver
Datasheet - production data
 Guaranteed high receiver output state for
floating inputs with no signal present
 Allow up to 64 transceivers on the bus
 Wide operating temperature range:
-40 to +105 °C
Applications
SO-8
 Industrial systems control
 Telecommunications
Features
 ESD protection
– ± 15 kV human body model
– ± 8 kV IEC 1000-4-2 contact discharge
 Operate from a single 3.3 V supply - no charge
pump required
 Interoperable with 5 V logic
 1 µA low current shutdown mode max.
 Guaranteed 20 Mbps data rate
 -7 to 12 V common mode input voltage range
 Half duplex versions available
 Industry standard 75176 pinout
 Current limiting and thermal shutdown for
driver overload protection
Description
The ST4485EB device is a ± 15 kV ESD
protected, 3.3 V low power transceiver for RS-485
and RS-422 communications. The device
contains one driver and one receiver in half
duplex configuration.
The ST4485EB transmits and receives at
a guaranteed data rate of at least 20 Mbps.
All transmitter outputs and receiver inputs are
protected to ± 15 kV using “Human Body Model”.
The 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.
Order code
ST4485EBDR
Table 1. Device summary
Temperature range
Package
-40 to 105 °C
SO-8 (tape and reel)
Packaging
2500 parts per reel
September 2013
This is information on a product in full production.
DocID025158 Rev 2
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