The ST1480Ax is ±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 ST1480Ax transmits and receives at a guaranteed data rate of at least 12 Mbps.
All transmitter outputs and receiver inputs are protected to ±15 kV using Human Body Model.
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 ST1480Ax input has a true fail-safe feature that guarantees a logic high output if both inputs are open circuit, shorted together or in the presence of a termination with no signal on the bus.
±15 kV human body model
±8 kV IEC 1000-4-2 contact discharge
Operates from a single 3.3 V supply - no charge pump required
Interoperable with 5 V logic
1 μA low current shutdown mode max
Guaranteed 12 Mbps data rate
-7 to 12 common mode input voltage range
Half duplex versions available
Industry standard 75176 pinout
Current limiting and thermal shutdown for driver overload protection
Guaranteed high receiver output state for floating, shorted or terminated inputs with no signal present