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PDF NCN5121 Data sheet ( Hoja de datos )
| Número de pieza | NCN5121 | |
| Descripción | Transceiver | |
| Fabricantes | ON Semiconductor | |
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NCN5121
Transceiver for KNX
Twisted Pair Networks
Introduction
NCN5121 is a receiver−transmitter IC suitable for use in KNX
twisted pair networks (KNX TP1−256). It supports the connection of
actuators, sensors, microcontrollers, switches or other applications in
a building network.
NCN5121 handles the transmission and reception of data on the bus.
It generates from the unregulated bus voltage stabilized voltages for its
own power needs as well as to power external devices, for example, a
microcontroller.
NCN5121 assures safe coupling to and decoupling from the bus.
Bus monitoring warns the external microcontroller in case of loss of
power so that critical data can be stored in time.
Key Features
• 9600 baud KNX Communication Speed
• Supervision of KNX Bus Voltage and Current
• Supports Bus Current Consumption up to 24 mA
• High Efficient DC−DC Converters
♦ 3.3 V Fixed
♦ 1.2 V to 21 V Selectable
• Control and Monitoring of Power Regulators
• Linear 20 V Regulator
• Buffering of Sent Data Frames (Extended Frames Supported)
• Selectable UART or SPI Interface to Host Controller
• Selectable UART and SPI baud Rate to Host Controller
• Optional CRC on UART to the Host
• Optional Received Frame−end with MARKER Service
• Optional Direct Analog Signaling to Host
• Operates with Industry Standard Low Cost 16 MHz Quartz
• Generates Clock of 8 or 16 MHz for External Devices
• Auto Acknowledge (optional)
• Auto Polling (optional)
• Temperature Monitoring
• Extended Operating Temperature Range −40°C to +105°C
• These Devices are Pb−Free and are RoHS Compliant
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1 40
QFN40
MN SUFFIX
CASE 485AU
MARKING DIAGRAM
NCN5121
21420−005
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 57 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
September, 2016 − Rev. 1
1
Publication Order Number:
NCN5121/D
1 page  
NCN5121
ELECTRICAL SPECIFICATION
Table 2. ABSOLUTE MAXIMUM RATINGS (Notes 1 and 2)
Symbol
Parameter
Min Max Unit
VTXO
ITXO
VCCP
VCAV
VBUS1
VANAOUT
IBUS1
VCEQ
VFILT
V20V
VDD2MV
VDD2MC
VDD2
VSW
VIN
VDD1
VDD1M
VDIG
KNX Transmitter Output Voltage
KNX Transmitter Output Current (Note 3)
Voltage on CCP−pin
Voltage on CAV−pin
Voltage on VBUS1−pin
Voltage on ANAOUT pin
Current Consumption VBUS1−pin
Voltage on pins CEQ1 and CEQ2
Voltage on VFILT−pin
Voltage on V20V−pin
Voltage on VDD2MV−pin
Voltage on VDD2MC−pin
Voltage on VDD2−pin
Voltage on VSW1− and VSW2−pin
Voltage on VIN−pin
Voltage on VDD1−pin
Voltage on VDD1M−pin
Voltage on pins MODE1, MODE2, TREQ, CSB/UC1, SDI/TXD, SDO/RXD, SCK/
UC2, XCLK, XSEL, SAVEB, RESETB, XCLKC, TRIG, and FANIN
−0.3
−10.5
−0.3
−0.3
−0.3
0
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
+45
250
+14.5
+3.6
+45
+3.6
120
+45
+45
+25
+3.6
+45
+45
+45
+45
+3.6
+3.6
+3.6
V
mA
V
V
V
V
mA
V
V
V
V
V
V
V
V
V
V
V
VDD Voltage on VDDD− and VDDA−pin
−0.3
+3.6
V
VXTAL
Voltage on XTAL1− and XTAL2−pin
−0.3
+3.6
V
TST Storage temperature
−55
+150
°C
TJ Junction Temperature (Note 4)
−40
+155
°C
VHBM
Human Body Model electronic discharge immunity (Note 5)
−2 +2 kV
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Convention: currents flowing in the circuit are defined as positive.
2. VBUS2, VSS1, VSS2, VSSA and VSSD form the common ground. They are hard connected to the PCB ground layer.
3. Room temperature, 27 W shunt resistor for transmitter, 250 mA over temperature range.
4. Normal performance within the limitations is guaranteed up to the Thermal Warning level. Between Thermal Warning and Thermal Shutdown
temporary loss of function or degradation of performance (which ceases after the disturbance ceases) is possible.
5. According to JEDEC JESD22−A114.
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5
5 Page 
VBUS
VBUSH
VBUSL
NCN5121
t BUS_FILTER
t BUS_FILTER
t
<VBUS>
Comments:
<VBUS> is an internal signal which can be verified with the Internal State Service.
Figure 4. Bus Voltage Undervoltage Threshold
VFILT
VFILTH
VFILTL
<VFILT>
Comments:
<VFILT> is an internal signal which can be verified with the System State Service
Figure 5. VFILT Undervoltage Threshold
VDD2
VDD2H
VDD2L
t
<VDD2>
Comments:
<VDD2> is an internal signal which can be verified with the System State Service
Figure 6. VDD2 Undervoltage Thresholds
t
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11
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