Wired Transceivers & Modems | NCN5151

M-BUS Slave Transceiver

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Overview

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.

  • Multi-energy utility meters:
    - Water
    - Gas
    - Electricity
    - Heating systems

  • 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 independent
  • 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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NCN5151MNTWG

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Last Shipments

CAD Model

Pb

A

H

P

QFN-20

485E

1

260

REEL

2500

Y

M-BUS

38400 baud

1

1

3.1

3.6

-

-

-

Price N/A

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Reliability Data

Die Related Summary Data

Device: NCN5151MNTWG

Equivalent to wafer fab process: CMOS SUB

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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