NCN5150 Wired M-BUS Slave Transceiver Description The NCN5150 is a single-chip integrated slave transceiver for use in two-wire Meter Bus (M-BUS) slave devices and repeaters. The www.onsemi.com transceiver provides all of the functions needed to satisfy the European Standards EN 137572 and EN 14343 describing the physical layer requirements for M-BUS. It includes a programmable power level of up to 2 (SOIC version) or 6 (NQFP version) unit loads, which are available for use in external circuits through a 3.3 V LDO regulator. NQFP20 SOIC16 MN SUFFIX D SUFFIX The NCN5150 can provide communication up to the maximum CASE 485E CASE 751B M-BUS communication speed of 38,400 baud (half-duplex). Features MARKING DIAGRAMS Single-chip MBUS Transceiver 20 UART Communication Speeds Up to 38,400 baud 1 Integrated 3.3 V VDD LDO Regulator with Extended Peak Current NCN 5150 Capability of 15 mA ALYW Supports Powering Slave Device from the Bus or from External Power Supply NQFP20 Adjustable I/O Levels Adjustable Constant Current Sink up to 2 or 6 Unit Loads Depending 16 on the Package NCN5150 Low Bus Voltage Operation ALYYWWG Extended Current Budget for External Circuits: at least 0.88 mA 1 Polarity Independent SOIC16 Power-Fail Function Fast Startup No External Transistor Required on STC Pin A = Assembly Location L = Wafer Lot (optional) Industrial Ambient Temperature Range of 40C to +85C Y, YY = Year Available in: W, WW = Work Week 16-pin SOIC (Pin-to-Pin Compatible with TSS721A) G or = Pb-free Package 20-pin QFN ORDERING INFORMATION These are Pb-free Devices See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. Typical Applications Multi-energy Utility Meters Water Gas Electricity Heating systems Related Standards European Standard EN 137572, EN 14343 For more information visit www.m-bus.com Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: September, 2017 Rev. 4 NCN5150/DNCN5150 BUSL2 1 16 BUSL1 VB 2 15 GND 20 19 18 17 16 GND 1 15 STC 3 14 RIS BUSL1 2 14 VS RIDD 4 13 RXI NCN5150 NCN5150 BUSL2 3 13 VIO QFN20 SOIC16 PFb 5 12 RX VB TX 4 12 SC 6 11 VDD TXI 5 11 67 8 9 10 TXI 7 10 VS TX 8 9 VIO Figure 1. Pin Out NCN5150 in 20-pin NQFP and 16 Pin SOIC (Top View) Table 1. NCN5150 PINOUT Pin Number NCN5150 SOIC NCN5150 QFN Signal Name Type Pin Description BUSL1 Bus 16 2 MBUS line. Connect to bus through 220 series resistors. Connections are polarity independent BUSL2 Bus 1 3 VB Power 2 4 Rectified bus voltage STC Output 3 6 Storage capacitor pin. Connect to bulk storage capacitor (minimum 10 F, maximum 330 F2,700 F see Table 9) RIDD Input 4 7 Mark current adjustment pin. Connect to programming resistor PFb Output 5 8 Power Fail, active low SC Output 6 9 Mark bus voltage level storage capacitor pin. Connect to ceramic capacitor (typically 220 nF) TXI Output 7 11 UART Data output (inverted) TX Output 8 12 UART Data output VIO Input 9 13 I/O pins (RX, RXI, TX, TXI, PFb) high level voltage VS Output 10 14 Gate driver for PMOS switch between bus powered operation and external power supply VDD Power 11 16 Voltage regulator output. Connect to minimum 1 F decoupling capacitor RX Input 12 17 UART Data input RXI Input 13 18 UART Data input (inverted) RIS Input 14 20 Modulation current adjustment pin GND Ground 15 1 Ground NC NC 5, 10, 15, 19 Not connected pins. Tie to GND EP Ground EP Exposed Pad. Tie to GND www.onsemi.com 2 STC RIS RIDD PFb RXI SC RX VDD