ST1480ABDR

The ST1480Ax is ±15kV ESD protected, 3.3V 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 ±15kV 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: ±15kV human body model, ±8kV IEC 1000 - 4 - 2 contact discharge
• Operates from a single 3.3V supply - no charge pump required
• Interoperable with 5V logic
• 1μA 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