1 Overview

This document contains information for TCAN844-Q1 and TCAN844V-Q1. These are controller area network (CAN) transceivers. The TCAN844-Q1 and TCAN844V-Q1 come 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 (pin FMA) for the device pins of TCAN844-Q1 and TCAN844V-Q1

Figure 1-1 shows the device functional block diagram for reference. TCAN844-Q1 has the V_IO input at pin 5, while TCAN844V-Q1 has a no connect (NC) at pin 5.

TCAN844-Q1 and TCAN844V-Q1 were developed using a quality-managed development process, but were not developed in accordance with the IEC 61508 or ISO 26262 standards.