onsemi NCN5151
The NCN5151 is a single−chip integrated slave transceiver for use in two−wire Meter Bus (M−BUS) slave devices and repeaters. The NCN5151 reuses the NCN5150 features and adds two low power modes: a 2−wire low power mode dedicated to System for meter Communication and Readout for powerless meters (SCR) and a 3−wire low power mode allowing support for wireless applications. When configured in low power mode, the transceiver will not behave anymore as a constant current source in order to save energy.| Part No. | NCN5151 |
|---|---|
| Datasheet | NCN5151 Download |
| Manufacturer |  onsemi |
| Description | Wired M-BUS Slave Transceiver |
| Buy | Stock & Price |
DESCRIPTION
When configured and used in M−BUS mode, the NCN5151 transceiver provides all of the functions needed to satisfy the European Standards EN 13757−2 and EN 1434−3 describing the physical layer requirements for M−BUS. It includes a programmable power level of up to 6 unit loads, which are available for use in external circuits through a 3.3 V LDO regulator.FEATURES
● Single−chip M−BUS Transceiver● 2 and 3−Wire Low Power Modes with Selection Input Pins
● Integrated 3.3 V VDD LDO Regulator with Extended Peak Current Capability of 15 mA
● Supports Powering Slave Device from the Bus
● Adjustable Constant Current Sink Up to 6 Unit Loads in M−Bus Mode
● Adjustable Current Limit up to 2 Unit Loads in Low Power Mode
● Current budget of 0.88 mA minimum for external circuits
● Low Turn−ON/OFF Levels for Low Bus Voltage Operation
● Polarity Independent
● Power−Fail Function (M−Bus mode)
● UART Communication Speeds up to 38400 baud
● Fast Startup − No External Transistor Required on STC...
