TLIN2021ADRBRQ1

The TLIN2021A-Q1 is a Local Interconnect Network (LIN) physical layer transceiver. LIN is a low-speed Universal Asynchronous Receiver/Transmitter (UART) communication protocol that supports automotive in-vehicle networks. The TLIN2021A-Q1 transmitter supports data rates of up to 20 kbps. The transceiver controls the state of the LIN bus through the TXD pin and reports the bus state through its open-drain RXD output pin. The device features a current-limiting waveform shaping driver to reduce electromagnetic emissions (EME). The TLIN2021A-Q1 is designed to support 12V and 24V applications and has a wide input operating voltage range. The device supports a low-power sleep mode and can be awakened from the low-power mode through the LIN, WAKE pin, or EN pin wake-up function. The device can selectively enable various power supplies that may exist on the node through the device's INH output pin, thereby reducing battery current consumption at the overall system level. The TLIN2021A-Q1 integrates resistors suitable for LIN responder node applications, as well as ESD protection and fault protection functions. These functions help reduce the number of external components in the application. In the event of ground drift or power supply voltage disconnection, the device can prevent feedback current from flowing through the LIN to the power input. The TLIN2021A-Q1 also includes undervoltage detection, overheat shutdown protection, and ground fault protection functions. In the event of a fault condition, the transmitter will immediately shut down and remain off until the fault is cleared.

Applications

• Body electronics and lighting
• Automotive infotainment and instrument clusters
• Hybrid electric vehicles and powertrain systems
• Industrial transportation

Key features

• AEC-Q100 (Grade 1) qualified for automotive applications
• Compliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, and ISO17987–4 electrical physical layer (EPL) specifications
• Compliant with SAE J2602-1 LIN network standard for automotive applications
• Functional safety capable
• Documentation available to support functional safety system design
• Supports 12V and 24V applications
• Wide operating input voltage range: – VSUP range: 4.5V to 45V
• LIN transmit data rate up to 20kbps
• LIN receive data rate up to 100kbps
• Operating modes: Normal, Standby, and Sleep
• Low-power mode wake-up support with source identification:
• Remote wake-up via LIN bus
• Local wake-up via WAKE pin
• Local wake-up via EN pin
• Integrated 45kΩ LIN pull-up resistor
• System-level power consumption control via INH pin
• Unpowered/power-down glitch-free operation on LIN bus and RXD output
• Protection features: ±60V LIN bus fault tolerance, 58V load dump support, undervoltage protection on VSUP, TXD dominant state timeout, thermal shutdown, system-level unpowered node or ground disconnect failure protection
• Junction temperature range: -40°C to 150°C
• Available in 8-pin SOIC, VSON with wettable flanks, and SOT23 packages