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Key Features
• Meter-Bus Transceiver (for Slave) Meets Standard EN1434-3Receiver Logic With Dynamic Level RecognitionAdjustable Constant-Current Sink via ResistorPolarity IndependentPower-Fail FunctionModule Supply Voltage Switch3.3-V Constant Voltage SourceRemote PoweringUp to 9600 Baud in Half Duplex for UART ProtocolSlave Power SupportSupply From Meter-Bus via Output VDDSupply From Meter-Bus via Output VDD or From Backup BatterySupply From Battery – Meter-Bus Active for DataTransmission OnlyMeter-Bus Transceiver (for Slave) Meets Standard EN1434-3Receiver Logic With Dynamic Level RecognitionAdjustable Constant-Current Sink via ResistorPolarity IndependentPower-Fail FunctionModule Supply Voltage Switch3.3-V Constant Voltage SourceRemote PoweringUp to 9600 Baud in Half Duplex for UART ProtocolSlave Power SupportSupply From Meter-Bus via Output VDDSupply From Meter-Bus via Output VDD or From Backup BatterySupply From Battery – Meter-Bus Active for DataTransmission Only
Description
AI
TSS721A is a single chip transceiver developed for Meter-Bus standard (EN1434-3) applications.
The TSS721A 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 3.3-V voltage regulator, with power reserve for a delayed switch off at bus fault, is integrated.
TSS721A is a single chip transceiver developed for Meter-Bus standard (EN1434-3) applications.
The TSS721A 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 3.3-V voltage regulator, with power reserve for a delayed switch off at bus fault, is integrated.