NCN5151 Datasheet, PDF (1/20 Pages) ON Semiconductor – Wired M-BUS Slave Transceiver

NCN5151
Wired M-BUS Slave
Transceiver with Low
Power Mode Support
Description
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.
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 Pin
• Industrial Ambient Temperature Range of −40°C to +85°C
• These are Pb-free Devices
Typical Applications
• Multi−Energy Utility Meters
♦ Water
♦ Gas
♦ Electricity
♦ Heating systems
Related Standards − European Standard
EN 13757−2, EN 1434−3
For more information visit www.m-bus.com
www.onsemi.com
NQFP−20
MN SUFFIX
CASE 485E
MARKING DIAGRAMS
20
1
NCN
5151
ALYW
G
A
= Assembly Location
L
= Wafer Lot (optional)
Y
= Year
W
= Work Week
G
= Pb-free Package
ORDERING INFORMATION
See detailed ordering and shipping information on page 19 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
April, 2015 − Rev. 2
Publication Order Number:
NCN5151/D