NCV7321
Stand Alone LIN
Transceiver
Description
The NCV7321 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 NCV7321 LIN device is a member of the in−vehicle
networking (IVN) transceiver family. It is designed to work in harsh
automotive environment and is qualified following the TS16949 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.
http://onsemi.com
SOIC−8
8
CASE 751
1
PIN ASSIGNMENT
8
7
6
5
1
2
3
4
RxD
EN
INH
V
BB
WAKE
TxD
LIN
Features
GNI
• General
♦ SOIC−8 Green package (Pb−Free)
(Top View)
PC20040918.3
• LIN−Bus Transceiver
♦ LIN Compliant to Specification Revision 2.0 and 2.1 (Backwards
Compatible to Version 1.3) and J2602
♦ Bus Voltage $45 V
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
♦ Transmission Rate 1 kbps to 20 kbps
♦ Sleep Mode: LIN Transceiver Disabled, the
• Protection
Consumption from V is Minimized, INH Switch
BB
♦ Thermal Shutdown
is Off
♦ 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
♦ Standby Mode: transition mode reached either after
power−up or after a wakeup event, INH switch is on
♦ Wake−up Bringing the Component from Sleep
Mode into Standby Mode is Possible either by LIN
Command or a Digital Signal on WAKE Pin (e.g.
External Switch)
• EMI Compatibility
♦ Integrated Slope Control
• These are Pb−Free Devices
• Modes
♦ Normal Mode: LIN Transceiver Enabled,
Communication via the LIN Bus is Possible, INH
Switch is On
© Semiconductor Components Industries, LLC, 2010
1
Publication Order Number:
June, 2010 − Rev. 8
NCV7321/D