SFFSB36 February 2026 TMP101-Q1
4 Pin Failure Mode Analysis (Pin FMA)
This section provides a failure mode analysis (FMA) for the pins of the TMP101-Q1. The failure modes covered in this document include the typical pin-by-pin failure scenarios:
- Pin short-circuited to ground (see Table 4-2)
- Pin open-circuited (see Table 4-3)
- Pin short-circuited to an adjacent pin (see Table 4-4)
- Pin short-circuited to supply (see Table 4-5)
Table 4-2 through Table 4-5 also indicate how these pin conditions can affect the device as per the failure effects classification in Table 4-1.
Table 4-1 TI Classification of Failure Effects
| Class | Failure Effects |
|---|---|
| A | Potential device damage that affects functionality. |
| B | No device damage, but loss of functionality. |
| C | No device damage, but performance degradation. |
| D | No device damage, no impact to functionality or performance. |
Figure 4-1 shows the TMP101-Q1 pin diagram. For a detailed description of the device pins, see the Pin Configuration and Functions section in the TMP101-Q1 datasheet.
Figure 4-1 Pin DiagramFollowing are the assumptions of use and the device configuration assumed for the pin FMA in this section:
- A bypass capacitor of 0.1μF on the input voltage pin is implemented.
Table 4-2 Pin FMA for Device Pins Short-Circuited to Ground
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| SCL | 1 | I2C communication is not possible. | B |
| GND | 2 | There is no effect on the device. The device operates as normal. | D |
| ALERT | 3 | The functionality of the ALERT pin is not available. The ALERT false triggers or fails to trigger, depending on the setting of the POL. If ALERT triggers continuously, the trigger can interrupt other functions of the device. | B |
| V+ | 4 | The device is not functional and is potentially damaged. | A |
| ADD0 | 5 | I2C address selection is limited. | B |
| SDA | 6 | I2C communication is not possible | B |
Table 4-3 Pin FMA for Device Pins Open-Circuited
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| SCL | 1 | I2C communication is not possible. | B |
| GND | 2 | The functionality of the device is undetermined. | B |
| ALERT | 3 | The functionality of the ALERT pin is not available. | B |
| V+ | 4 | The functionality of the device is undetermined. | B |
| ADD0 | 5 | I2C address selection is limited. | B |
| SDA | 6 | I2C communication is not possible. | B |
Table 4-4 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|---|
| SCL | 1 | GND | I2C communication is not possible. | B |
| GND | 2 | ALERT | The functionality of the ALERT pin is not available. The ALERT false triggers or fails to trigger, depending on the setting of the POL. If ALERT triggers continuously, the trigger can interrupt other functions of the device. | B |
| ALERT | 3 | V+ | The functionality of the ALERT pin is not available. The ALERT false triggers or fails to trigger, depending on the setting of the POL. If ALERT triggers continuously, the trigger can interrupt other functions of the device. | B |
| V+ | 4 | ADD0 | I2C address selection is limited. | B |
| ADD0 | 5 | SDA | I2C communication is not possible. | B |
| SDA | 6 | SCL | I2C communication is not possible. | B |
Table 4-5 Pin FMA for Device Pins Short-Circuited to Supply
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| SCL | 1 | I2C communication is not possible. | B |
| GND | 2 | The device is not functional and is potentially damaged. | A |
| ALERT | 3 | The functionality of the ALERT pin is not available. The ALERT false triggers or fails to trigger, depending on the setting of the POL. If ALERT triggers continuously, the trigger can interrupt other functions of the device. | B |
| V+ | 4 | There is no effect on the device. The device operates as normal. | D |
| ADD0 | 5 | I2C address selection is limited. | B |
| SDA | 6 | I2C communication is not possible. | B |