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.
●Key Features
● ESD protection
● ±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
● Allows up to 64 transceivers on the bus
