1 Overview

This document contains information for the TCAN340x-Q1, which are 3.3V controller area network (CAN) transceivers. The TCAN340x-Q1 comes in the SOIC (D), VSON (DRB), and SOT (DDF) packages to aid in a functional safety system design. Information provided are:

• Functional safety failure in time (FIT) rates of the semiconductor component estimated by the application of industry reliability standards
• Component failure modes and their distribution (FMD) based on the primary function of the device
• Pin failure mode analysis (FMA) for the device pins of TCAN340x-Q1

Figure 1-1 shows the device functional block diagram for reference. TCAN3403-Q1 has the low voltage I/O support at pin 5, while TCAN3404-Q1 has the ultra-low power shutdown mode at pin 5.

Figure 1-1 TCAN3403-Q1 and TCAN3404-Q1 Functional Block Diagram

The TCAN340x-Q1 were developed using a quality-managed development process, but were not developed in accordance with the IEC 61508 or ISO 26262 standards.