TLIN2441-Q1 Automotive local interconnect network transceiver with integrated voltage regulator and watchdog |

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Automotive local interconnect network transceiver with integrated voltage regulator and watchdog



The TLIN2441-Q1 is a local interconnect network (LIN) physical layer transceiver, compliant to LIN 2.2A and ISO/DIS 17987–4.2 standards, with an integrated low dropout (LDO) voltage regulator and watchdog. The TLIN2441-Q1’s watchdog can operate in window or timeout mode and can be controlled by pins or SPI. The Pin or SPI control is established at power up by the state of pin 9 (e.g. High, Z-State, Low).

LIN is a single-wire bidirectional bus typically used for low speed in-vehicle networks using data rates up to 20 kbps. The LIN receiver supports data rates up to 100 kbps for end-of-line programming. The TLIN2441-Q1 converts the LIN protocol data stream on the TXD input into a LIN bus signal. The receiver converts the data stream to logic level signals that are sent to the microprocessor through the open-drain RXD pin. The TLIN2441-Q1 reduces system complexity by providing a 3.3 V or 5 V rail with up to 70mA of current to power microprocessors, sensors or other devices. The TLIN2441-Q1 has an optimized current-limited wave-shaping driver which reduces electromagnetic emissions (EME).

Ultra-low current consumption is possible using the sleep mode which allows wake up via LIN bus or pin. The LIN bus has two states: dominant state (voltage near ground) and recessive state (voltage near battery). In the recessive state, the LIN bus is pulled high by the internal pull-up resistor (45 kΩ) and a series diode. No external pull-up components are required for slave applications. Master applications require an external pull-up resistor (1 kΩ) plus a series diode per the LIN specification.


  • AEC Q100: Qualified for automotive applications
    • Temperature grade 1: –40°C To 125°C TA
  • Local interconnect network (LIN) physical layer specification ISO/DIS 17987–4.2 compliant and conforms to SAEJ2602 recommended practice for LIN
  • Supports 12 V applications and 24 V applications
  • Integrated watchdog supervisor configurable by pin or serial peripheral interface SPI
  • Wide Operating Ranges
    • 5.5 V to 36 V supply voltage
    • ±58 V LIN bus fault protection
    • LDO output supporting 3.3 V (TLIN24413-Q1) or 5 V (TLIN24415-Q1)
    • Sleep mode: ultra-low current
      consumption allows wake up event from:
      • LIN bus
      • Local wake up through EN
      • Local wake up through WAKE
    • Power up and down glitch free operation
  • Protection Features:
    • ESD protection
    • Under voltage protection on VSUP
    • TXD dominant time out (DTO) protection
    • Thermal shutdown protection
    • Unpowered node or ground disconnection failsafe at system level
  • VCC sources 70 mA with 24 VSUP at 85°C
  • Available in Leadless VSON (14) package with improved automated optical inspection (AOI) capability

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Part number Order Protocols Number of channels (#) Supply voltage(s) (V) Bus fault voltage (V) Signaling rate (Max) (Mbps) Package Group Rating Operating temperature range (C) Low power mode Isolated HBM ESD (kV)
TLIN2441-Q1 Order now LIN
1     5 to 36     -58 to 58     0.1     VSON | 14     Automotive     -40 to 125     Sleep     No     8    
TLIN1441-Q1 Order now LIN
1     5 to 28     -42 to 42     0.1     VSON | 14     Automotive     -40 to 125     Sleep     No     8