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TI Introduces LIN 2.0-Compliant Physical Interface Device with Electrostatic Discharge Protection up to 17 kV

Robust Device Reduces Component Count for Automotive Networks

Oct 20, 2004

DALLAS (October 20, 2004) - Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced a stand-alone local interconnect network (LIN) transceiver for automotive applications with best-in-class electrostatic discharge (ESD) protection of up to 17 kV (International Electrotechnical Commission) and 12 kV (human body model). The device survives International Standards Organization (ISO) 7637 transients and has fault protection to handle -40 V to 40 V on the LIN bus, making it ideal for the harsh automotive environment of low-speed, in-vehicle networks. The TPIC1021 can be used with resistance-capacitance (RC) oscillator-based microcontroller systems, which enables the next generation of LIN-based automotive body applications such as door modules, window lifters, seat controls, intelligent sensors and intelligent actuators. (See www.ti.com/sc04220.)

The TPIC1021 is compliant with the LIN Physical Layer Specification Revision 2.0 and conforms to the Society of Automotive Engineers (SAE) J2602 recommended practice for LIN. The device's ESD protection of up to 17 kV (IEC) and 12 kV (HBM) more than doubles the ESD protection provided by similar devices, reducing the need for external protection components.
The TPIC1021 functions across the LIN 2.0 specified data rate up to 20.0 kBit/sec and functions equally well at the lower data rates recommended by SAE J2602. The low power (sleep) mode minimizes current consumption, and to minimize electromagnetic emissions (EME) the TPIC1021 controls the LIN bus slew rate according to the LIN 2.0 standard. To maximize electromagnetic immunity (EMI), the receiver's input filter reduces radio-frequency (RF) interference caused by interference on the LIN bus line.

Additional Key Features

  • Dominant time-out function at TxD pin 
  • Wake-up request on RxD pin 
  • Wake-up available from LIN bus, wake-up input (external switch) or host microcontroller unit (MCU) 
  • Interfaces to MCU with 5-V or 3.3-V I/O pins and works well with TI´s MCUs 
  • Powered from Vsup (vehicle battery) so no external Vcc is needed for the LIN transceiver 
  • Low resistance INH switch controls system voltage regulators, allowing TPIC1021 to wake up from LIN bus or external switch while the rest of the system is in sleep mode 
  • Low EME, high EMI 
  • Survives transient damage in the automotive environment ISO 7637 

Availability and Pricing

The TPIC1021D is available in volume from TI and its authorized distributors in an eight-pin small outline (S08) package. Suggested resale pricing in 1,000-piece quantities is $0.55 each. 

Texas Instruments offers a wide range of products that enhance automobile performance, safety and comfort while reducing environmental impact. TI´s products include fully-integrated LIN subsystems in addition to the standalone


device. For more information on TI´s automotive products, please see