SFFS759 February   2024 CD4051B-Q1

 

  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 CD4051B-Q1 TSSOP Package

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for the CD4051B-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)

30

MUX channel stuck on15
MUX channel stuck off

15

MUX functional out of specification voltage or timing

40