Datasheet Texas Instruments TSS721AD — 数据表

TSS721A
www.ti.com SLAS222B – APRIL 1999 – REVISED NOVEMBER 2010 METER-BUS TRANSCEIVER
Check for Samples: TSS721A FEATURES 1 Meter-Bus Transceiver (for Slave) Meets
Standard EN1434-3
Receiver Logic With Dynamic Level
Recognition
Adjustable Constant-Current Sink via Resistor
Polarity Independent
Power-Fail Function
Module Supply Voltage Switch
3.3-V Constant Voltage Source
Remote Powering
Up to 9600 Baud in Half Duplex for UART
Protocol
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
Data Transmission Only D PACKAGE
(TOP VIEW) BUSL2 1 16 BUSL1 VB 2 15 GND STC 3 14 RIS RIDD 4 13 RXI PF 5 12 RX SC 6 11 VDD TXI 7 10 VS TX 8 9 BAT DESCRIPTION
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 …