CA-IF1021S-Q1

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Automotive LIN Transceiver

The CA-IF1021x-Q1 family of device is Local Interconnect Network (LIN) transceiver with integrated wake-up and protection features for automotive applications. LIN is low speed universal asynchronous receiver transmitter (UART) communication protocol used to support in-vehicle networks. The CA-IF1021x-Q1 transceiver controls the LIN bus state via the TXD input and reports the bus state on its open-drain output RXD between the protocol controller and physical LIN networks. These device features slew-rate control and wave-shaping to reach a very low level of electromagnetic emission (EME) within a broad frequency range.

The CA-IS1021x-Q1 devices are designed to support 12V automotive applications with 5.5V to 27V wide VBAT input voltage operating range and have up to ±58V fault protection on LIN bus, with integrated ESD protection, these devices help to reduce external components in the design. Also, these devices feature low-power sleep mode, as well as wake-up capability over LIN bus, or via the WAKE_N pin, SLP_N pin. Inhibit output (INH) can be used to control one or more external voltage regulators presented on a node to reduce the battery power consumption at system level. In the event of a ground shift or supply voltage disconnection, the devices can prevent back-feed current through LIN to the supply input.

The CA-IF1021x-Q1 transceiver is available in a standard 8- pin SOIC package and 8-pin DFN package, operates over the -40°C to +150°C junction temperature range.

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  • Features

    Meets LIN2.0、LIN2.1、LIN2.2、LIN2.2A and ISO 17987-4:2016(12V) Physical-layer (EPL) Standards

    Compliant to SAE J2602-1 and SAE J2602-2 LIN Physical-layer Specification

    Designed to Support 12V Applications with Wide Operating Supply Range

    5.5V to 27V supply range (VBAT)

    3.3V and 5.0V Input Logic Compatible

    System-level Power Control via INH pin

    Power-up/down Glitch-free Operation on LIN bus and RXD output

    Integrated 30kΩ LIN pull-up Resistor

    Support up to 20kbps LIN Transmission Data Rate

    Operating Mode

    Normal operation
    Low-power sleep
    Low-power standby
    Power-on

    Wake-up from Low-power Mode

    Remote wake-up via LIN bus
    Local wake-up via WAKE_N or SLP_N pins

    Integrated Protection Increases Robustness

    ±58V fault-tolerant LIN bus
    42V load dump protection
    Enhanced ESD protection
    Undervoltage protection on VBAT
    Transmitter dominant timeout prevents lockup
    Thermal shutdown
    System level fail-safe protection for the unpowered node or ground disconnection

    –40°C to 150°C Junction Temperatures Range

    Available in SOIC8 and DFN8 (3.0mm x 3.0mm) Packages

    AEC-Q100 Qualified for Automotive Application

  • Applications

    • Body electronics

    • Automotive gateway

    • Infotainment and cluster

    • Hybrid electric vehicles and powertrain systems

  • Device Information

    Part numberPackagePackage size(NOM)
    CA‐IF1021S‐Q1SOIC84.9mm×3.9mm
    CA‐IF1021D‐Q1DFN‐83mm x 3mm
  • Simplified Functional Diagram

    1021S-Q1.png