Overview
The NCV7321D11R2G is a fully featured local interconnect network (LIN) transceiver designed by onsemi to interface between a LIN protocol controller and the physical bus. This transceiver is part of the in-vehicle networking (IVN) transceiver family and is implemented in I3T technology, allowing both high-voltage analog circuitry and digital functionality to co-exist on the same chip. It is designed to operate in harsh automotive environments and is qualified according to the TS16949 flow. The LIN bus is optimized for communicating low-rate data from control devices such as door locks, mirrors, car seats, and sunroofs, aiming to minimize wiring and costs.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VBB (Nominal Battery Operating Voltage) | 5 | 12 | 27 | V |
| Load Dump Protection | - | - | 45 | V |
| VLIN (LIN Bus Voltage) | -45 | - | 45 | V |
| VWAKE (Operating DC Voltage on WAKE Pin) | 0 | - | 45 | V |
| VINH (Operating DC Voltage on INH Pin) | 0 | - | VBB + 0.3 | V |
| TJ (Junction Temperature) | -40 | - | 150 | °C |
| Tamb (Operating Ambient Temperature) | -40 | - | 125 | °C |
| Transmission Rate | 1 kbps | - | 20 kbps | - |
| IBB_SLP (Supply Current in Sleep Mode) | - | 20 | - | µA |
Key Features
- LIN-Bus Transceiver: Compliant to LIN Specification Revision 2.x (backwards compatible to Version 1.3) and J2602.
- Protection Features:
- 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
- EMI Compatibility: Integrated Slope Control.
- Operating Modes:
- Normal Mode: LIN Transceiver Enabled
- Sleep Mode: LIN Transceiver Disabled
- Standby Mode: Transition Mode after Power-up or Wake-up Event
- Wake-up Mechanism: Local wake-up via WAKE pin and remote (or LIN) wake-up via LIN bus.
- Quality and Compliance: AEC-Q100 Qualified, PPAP Capable, Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.
Applications
The NCV7321D11R2G is designed for use in automotive applications, particularly in the control of mechatronic nodes such as door locks, mirrors, car seats, and sunroofs. It is part of the in-vehicle networking (IVN) system, which aims to minimize wiring and reduce costs while ensuring reliable communication between various control devices. The LIN bus is especially useful for functions related to passenger comfort, which are not time-critical.
Q & A
- What is the NCV7321D11R2G used for?
The NCV7321D11R2G is a LIN transceiver used to interface between a LIN protocol controller and the physical bus in automotive applications.
- What are the key features of the NCV7321D11R2G?
Key features include LIN-bus compliance, thermal shutdown, short-circuit protection, load dump protection, EMI compatibility, and multiple operating modes.
- What are the operating voltage ranges for the NCV7321D11R2G?
The nominal battery operating voltage (VBB) ranges from 5 V to 27 V.
- How does the wake-up mechanism work?
The wake-up mechanism can be triggered either by a local wake-up via the WAKE pin or by a remote (or LIN) wake-up via the LIN bus.
- What kind of protection does the NCV7321D11R2G offer?
The device offers thermal shutdown, indefinite short-circuit protection, load dump protection, and protection against transients in an automotive environment.
- Is the NCV7321D11R2G compliant with any automotive standards?
Yes, it is compliant with LIN Specification Revision 2.x and J2602, and it is AEC-Q100 Qualified and PPAP Capable.
- What is the transmission rate of the NCV7321D11R2G?
The transmission rate ranges from 1 kbps to 20 kbps.
- How does the device handle EMI?
The device includes integrated slope control for EMI compatibility.
- What are the different operating modes of the NCV7321D11R2G?
The device has normal mode, sleep mode, and standby mode, which are determined by the supply voltage and input signals.
- Is the NCV7321D11R2G environmentally friendly?
Yes, it is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.
