NCN5151: M-BUS Slave Transceiver
The NCN5151 is a single-chip integrated slave transceiver for use in 2-wire Meter Bus (M-BUS) slave devices and repeaters. The NCN5151 reuses the NCN5150 features and adds two lowpower 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. 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 3.3V 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 Units Load 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 independant
- Power-Fail function (M-BUS mode)
- UART Communication speeds up to 38400 baud
- Fast Startup - No External Transistor required on STC Pin
- Industrial Ambient Temperature Range of -40C to +85C
- These are Pb-free Devices
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Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCN5151MNTWG | Active | Pb-free
Halide free | QFN-20 | Contact BDTIC | 1 | Tape and Reel | 2500 | Contact BDTIC |
Specifications
| Product | Data Transmission Standard | Data Rate | Number of Drivers | Number of Receivers | VCC Min (V) | VCC Max (V) | tPLH Max (µs) | IO Max (µA) | IIH Max (mA) |
|---|
| NCN5151MNTWG | M-BUS | 38400 baud | 1 | 1 | 3.1 | 3.6 | | | |
