Communication & Interface circuit

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SSP485

The SSP485 is a half-duplex high speed transceiver for RS-485 and RS422 communication. IC contains one driver and one receiver. The SSP485 has a fail-safe circuit. Each driver output and receiver input is protected against ±15kV electrostatic discharge (HBM) (ESD)shocks. The SSP485 receiver has 1/8 unit load input impedance, allows up to 256 devices can be attached to the bus. Mainly used in RS-485/RS-422 communication system.

SSP3485

The SSP3485 is a half-duplex high speed transceiver for RS-485 and RS422 communication. IC contains one driver and one receiver. The SSP3485 has a fail-safe circuit. It has a slew-rate-limited driver that reduces EMI and reflection due to improperly matched terminal cables, and achieves error-free data transmission of up to 10Mbps. Each driver output and receiver input is protected against ±15kV electrostatic discharge (HBM) (ESD)shocks. The SSP3485 receiver has 1/8 unit load input impedance, allows up to 256 devices can be attached to the bus. Mainly used in RS-485/RS-422 communication system.

SSP3085

The SSP3085 is a half-duplex high speed transceiver for RS-485 and RS422 communication. IC contains one driver and one receiver. The SSP3085 has a fail-safe circuit, ensure logical high level of receiver output when receiver input is open or short. It can achieve error-free data transmission of up to 500kbps. Each driver output and receiver input is protected against ±15kV electrostatic discharge (HBM) (ESD)shocks. The SSP3085 receiver has 1/8 unit load input impedance, allows up to 256 devices can be attached to the bus.

SSP485N

The SSP485N is a half-duplex high speed transceiver for RS-485 communication. IC contains one driver and one receiver, It has adaptive function. The SSP485N has a fail-safe circuit，ensure logical high level of receiver output when receiver input is open or short. The SSP485N receiver has 1/8 unit load input impedance, allows up to 256 devices can be attached to the bus.

SSP721A

SSP721A is a single chip transceiver developed for Meter-Bus standard (EN1434-3、EN13757) applications. The SSP721A interface circuit adjusts the different potentials between a slave system and the Meter-Bus master. The connection to the bus is polarity independent and supports full galvanic slave isolation with optocouplers. The circuit is supplied by the master via the bus. Therefore, this circuit offers no additional load for the slave battery. A power-fail function is integrated. The receiver has dynamic level recognition, and the transmitter has a programmable current sink. A 3.3V voltage regulator, with power reserve for a delayed switch off at bus fault, is integrated.