(China (Mainland))
Product Summary
The TSS721ADR is a single chip transceiver developed for Meter-Bus standard (EN1434-3) applications. The TSS721ADR 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 TSS721ADR is supplied by the master via the bus. Therefore, this circuit TSS721ADR 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.
Parametrics
TSS721ADR absolute maximum ratings: (1)VMB, Voltage, BUSL1 to BUSL2: ±50 V; (2)VI, Input voltage range, RX and RXI: –0.3 V to 5.5 V; BAT: –0.3 V to 5.5 V; (3)TJ, Operating junction temperature range: –25 to 150℃; (4)TA, Operating free-air temperature range: –25 to 85℃; (5)TSTG, Storage temperature range: –65 to 150℃; (6)Power derating factor, junction to ambient: 8 mW/℃.
Features
TSS721ADR features: (1)Meter-Bus Transceiver (for Slave) Meets Standard EN1434-3; (2)Receiver Logic With Dynamic Level Recognition; (3)Adjustable Constant-Current Sink via Resistor; (4)Polarity Independent; (5)Power-Fail Function; (6)Module Supply Voltage Switch; (7)3.3-V Constant Voltage Source; (8)Remote Powering; (9)Up to 9600 Baud in Half Duplex for UART Protocol; (10)Slave Power Support: Supply From Meter-Bus via Output VDD Supply From Meter-Bus via Output VDD or From Backup Battery; Supply From Battery – Meter-Bus Active for; (11)Data Transmission Only.
Diagrams
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 TSS721ADR |
Texas Instruments |
Bus Transceivers Meter-Bus Xceiver |
Data Sheet |
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TSS70L |
Taiwan Semiconductor |
Schottky (Diodes & Rectifiers) Schottky 150mW |
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TSS70U |
Taiwan Semiconductor |
Schottky (Diodes & Rectifiers) Schottky 150mW |
Data Sheet |
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TSS721AD |
Texas Instruments |
Bus Transceivers Meter-Bus Xceiver |
Data Sheet |
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TSS721ADR |
Texas Instruments |
Bus Transceivers Meter-Bus Xceiver |
Data Sheet |
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