Reducing component count

Texas Instruments has introduced a stand-alone local interconnect network (LIN) transceiver for automotive applications with electrostatic discharge (ESD) protection of up to 17 kV (IEC) and 12 kV (human body model).

The TPIC1021 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.

It 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.

The device 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.

It 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 minimise electromagnetic emissions (EME) it controls the LIN bus slew rate according to the LIN 2.0 standard.

To maximise electromagnetic immunity (EMI), the receiver’s input filter reduces radio-frequency (RF) interference caused by interference on the LIN bus line.

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

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