NCV7420_12 Datasheet, PDF (1/21 Pages) ON Semiconductor – LIN Transceiver with 3.3V or 5 V Voltage Regulator

NCV7420
LIN Transceiver with 3.3 V
or 5 V Voltage Regulator
General Description
The NCV7420 is a fully featured local interconnect network (LIN)
transceiver designed to interface between a LIN protocol controller
and the physical bus. The transceiver is implemented in I3T
technology enabling both high−voltage analog circuitry and digital
functionality to co−exist on the same chip.
The NCV7420 LIN device is a member of the in−vehicle
networking (IVN) transceiver family of ON Semiconductor that
integrates a LIN v2.0/2.1 physical transceiver and either a 3.3 V or a
5 V voltage regulator. It is designed to work in harsh automotive
environment and is submitted to the TS16949 qualification flow.
The LIN bus is designed to communicate low rate data from control
devices such as door locks, mirrors, car seats, and sunroofs at the
lowest possible cost. The bus is designed to eliminate as much wiring
as possible and is implemented using a single wire in each node. Each
node has a slave MCU−state machine that recognizes and translates
the instructions specific to that function. The main attraction of the
LIN bus is that all the functions are not time critical and usually relate
to passenger comfort.
KEY FEATURES
http://onsemi.com
PIN CONFIGURATION
VBB 1
LIN 2
GND ³
GND 4
WAKE 5
INH 6
OTP_ZAP ⁷
14 V_CC
13 RxD
12 TxD
11 GND
10 STB
9 _EN
8 _TEST
SOIC 14
D SUFFIX
CASE 751AP
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 19 of this data sheet.
LIN−Bus Transceiver
• LIN compliant to specification revision 2.0 and 2.1
(backward compatible to version 1.3) and J2602
• I3T high voltage technology
• Bus voltage ±45 V
• Transmission rate up to 20 kBaud
• SOIC 14 Green package
• This is a Pb−Free Device
Protection
• Thermal shutdown
• Indefinite short−circuit protection on pins LIN and
WAKE towards supply and ground
• Load dump protection (45 V)
• Bus pins protected against transients in an automotive
environment
• System ESD protection level for LIN, WAKE and Vbb
up to ±12 kV
EMI Compatibility
• Integrated slope control
• Meets most demanding EMS/EME requirements
Voltage Regulator
• Output voltage 5 V / ~50 mA or 3.3 V / ~50 mA
• Wake−up input
• Enable inputs for stand−by and sleep mode
• INH output for auxiliary purposes (switching of an
external pull−up or resistive divider towards battery,
control of an external voltage regulator etc.)
Modes
• Normal mode: LIN communication in either low (up to
10 kBaud) or normal slope
• Sleep mode: V_CC is switched “off” and no
communication on LIN bus
• Stand−by mode: V_CC is switched “on” but there is no
communication on LIN bus
• Wake−up bringing the component from sleep mode into
standby mode is possible either by LIN command or
digital input signal on WAKE pin. Wake−up from LIN
bus can also be detected and flagged when the chip is
already in standby mode.
Quality
• Automotive Qualification According to AEC−Q100,
Grade 1
© Semiconductor Components Industries, LLC, 2012
1
April, 2012 − Rev. 7
Publication Order Number:
NCV7420/D