SFFSA11 October   2024 SN74LVC1G66-Q1

 

  1.   1
  2. 1Overview
  3. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 SOT-23 Package
    2. 2.2 SOT-SC70 Package
  4. 3Failure Mode Distribution (FMD)
  5. 4Pin Failure Mode Analysis (Pin FMA)

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for SN74LVC1G66-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 (%)
SWITCH no output (Hi-Z)42.5
SWITCH channel stuck on7.5
SWITCH channel stuck off7.5
SWITCH functional out-of-specification voltage or timing42.5