TSS721AD集成电路（IC）的驱动器接收器收发器规格书PDF中文资料

TSS721AD属于集成电路（IC）的驱动器接收器收发器。由美国德州仪器公司制造生产的TSS721AD驱动器，接收器，收发器该系列产品的主要功能是提供必需的硬件资源，以通过延长电缆或印制线进行通信。确切的功能会因所采用的通信协议而异，可能包括诸如瞬态抑制之类的功能，这些功能对于通信用途可能并非绝对必要，但对于可能的使用环境却是明智之选。

1FEATURES

• 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

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

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.