SFFS925 July   2024 TMUX1308A , TMUX1309A

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 TSSOP Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 TMUX1308A-Q1 TSSOP Package
    2. 4.2 TMUX1309A-Q1 TSSOP Package

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for the TMUX1308A-Q1 and TMUX1309A-Q1 in Table 3-1 comes from the combination of common failure modes listed in standards such as IEC 61508 and ISO 26262, the ratio of sub-circuit function size and complexity, and from best engineering judgment.

The failure modes listed in this section reflect random failure events and do not include failures resulting from misuse or overstress.

Table 3-1 Die Failure Modes and Distribution
Die Failure ModesFailure Mode Distribution (%)
MUX no output (HIZ)20
MUX channel stuck on10
MUX channel stuck off10
MUX functional out of specification voltage or timing

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