ST485ERB Datasheet, PDF (1/19 Pages) –

ST485ERB
±15 kV ESD protected, low-power RS-485/RS-422 transceiver
Datasheet - production data
Features
Low quiescent current: 300 µA
Designed for RS-485 interface applications
- 7 V to 12 V common mode input voltage
range
Driver maintains high impedance in 3-state
or with the power OFF
70 mV typical input hysteresis
30 ns propagation delay, 5 ns skew
Operates from a single 5 V supply
Current limiting and thermal shutdown for
driver overload protection
ESD protection:
± 15 kV (HBM)
± 8 kV (IEC-1000-4-2 contact
discharge)
Allows up to 64 transceivers on the bus
Description
The ST485ERB is a low-power transceiver for
RS-485 and RS-422 communication. Each driver
output and receiver input is protected against
±15 kV electrostatic discharge (HBM) ± 8 kV
(IEC-1000-4-2 contact discharge) shocks, without
latch-up. 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 5 V supply.
The driver is a short-circuit current which is
limited and protected against excessive power
dissipation by thermal shutdown circuitry that
places the driver outputs into a high-impedance
state.
The ST485ERB is designed for bi-directional data
communication on multipoint bus transmission
lines (half-duplex applications).
October 2016
DocID9275 Rev 8
This is information on a product in full production.
1/19
www.st.com