SFFS816 March   2024 TMUX4051-Q1 , TMUX4052-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 TSSOP Package
    2. 2.2 SOT-23-THIN Package
    3. 2.3 WQFN Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 TMUX4051-Q1: TSSOP and SOT-23-THIN Packages
    2. 4.2 TMUX4051-Q1: WQFN Package
    3. 4.3 TMUX4052-Q1: TSSOP and SOT-23-THIN Packages
    4. 4.4 TMUX4052-Q1: WQFN Package

4.2 TMUX4051-Q1: WQFN Package

Figure 4-6 shows the TMUX405x-Q1 pin diagram for the WQFN package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the TMUX405x-Q1 data sheet.

Figure 4-3 Pin Diagram (WQFN Package)
Table 4-7 Pin FMA for Device Pins Short-Circuited to Ground
Pin Name Pin No. Description of Potential Failure Effect(s) Failure Effect Class
S4 1 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S6 2 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
D 3 Corruption of the signal passed onto the S pins. If there is no limiting resistor in the switch path, then device damage is possible. A
S7 4 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S5 5 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
EN 6 EN stuck low. Can no longer disable the device without power down B
VSS 7 There is no effect; this is normal operation, if the switch path signal voltages are positive. Possible damage to the device if the switch path signal voltages are negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
GND 8 No effect, normal operation D
A2 9 Address stuck low. Cannot control switch. B
A1 10 Address stuck low. Cannot control switch. B
A0 11 Address stuck low. Cannot control switch. B
S3 12 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S0 13 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S1 14 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S2 15 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
VDD 16 Device is unpowered. Device is not functional. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
Thermal Pad - No effect, normal operation. D
Table 4-8 Pin FMA for Device Open-Circuited
Pin Name Pin No. Description of Potential Failure Effect(s) Failure Effect Class
S4 1 Corruption of the signal passed onto the D pin. B
S6 2 Corruption of the signal passed onto the D pin. B
D 3 Corruption of the signal passed onto the S pins. B
S7 4 Corruption of the signal passed onto the D pin. B
S5 5 Corruption of the signal passed onto the D pin. B
EN 6 Loss of control of the EN pin. Cannot turn off the device. B
VSS 7 Device is unpowered and not functional. B
GND 8 Device unpowered. Device not functional. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage is possible. A
A2 9 Control of the address pin is lost. Cannot control switch. B
A1 10 Control of the address pin is lost. Cannot control switch. B
A0 11 Control of the address pin is lost. Cannot control switch. B
S3 12 Corruption of the signal passed onto the D pin. B
S0 13 Corruption of the signal passed onto the D pin. B
S1 14 Corruption of the signal passed onto the D pin. B
S2 15 Corruption of the signal passed onto the D pin. B
VDD 16 Device is unpowered. Device is not functional. B
Thermal Pad - No effect, normal operation. D
Table 4-9 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
Pin Name Pin No. Shorted to Description of Potential Failure Effect(s) Failure Effect Class
S4 1 S6 Possible corruption of the signal passed onto the D pin. B
S6 2 D Possible corruption of the signal passed onto the SX and D pin. B
D 3 S7 Possible corruption of the signal passed onto the SX and D pin. B
S7 4 S5 Possible corruption of the signal passed onto the D pin. B
S5 5 EN Possible corruption of the signal passed onto the D pin. Switch state will be undefined. B
EN 6 VSS Possible damage to device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
VSS 7 GND Possible damage to device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
GND 8 A2 Not considered, corner pin. D
A2 9 A1 Control of the address pin is lost. Cannot control switch. B
A1 10 A0 Control of the address pin is lost. Cannot control switch. B
A0 11 S3 Control of the address pin is lost. Cannot control switch. B
S3 12 S0 Corruption of the signal passed onto the D pin. B
S0 13 S1 Corruption of the signal passed onto the D pin. B
S1 14 S2 Corruption of the signal passed onto the D pin. B
S2 15 VDD Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
VDD 16 S4 Not considered, corner pin. D
Thermal Pad - N/A Not considered, thermal pad. D
Table 4-10 Pin FMA for Device Pins Short-Circuited to VDD
Pin Name Pin No. Description of Potential Failure Effect(s) Failure Effect Class
S4 1 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S6 2 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
D 3 Corruption of the signal passed onto the S pins. If there is no limiting resistor in the switch path, then device damage is possible. A
S7 4 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S5 5 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
EN 6 EN stuck high. Can no longer enable the device. B
VSS 7 Device is unpowered and not functional. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
GND 8 Device is unpowered. Device is not functional. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
A2 9 Address stuck high. Cannot control switch. B
A1 10 Address stuck high. Cannot control switch. B
A0 11 Address stuck high. Cannot control switch. B
S3 12 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S0 13 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S1 14 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S2 15 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
VDD 16 No effect, normal operation. D
Thermal Pad - No connect pin electrically floating, no effect. D
Table 4-11 Pin FMA for Device Pins Short-Circuited to VSS
Pin Name Pin No. Description of Potential Failure Effect(s) Failure Effect Class
S4 1 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S6 2 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
D 3 Corruption of the signal passed onto the S pins. If there is no limiting resistor in the switch path, then device damage is possible. A
S7 4 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S5 5 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
EN 6 Possible damage to the device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
VSS 7 No effect, normal operation. D
GND 8 Possible damage to the device if signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage is possible. A
A2 9 Possible damage to the device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
A1 10 Possible damage to the device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
A0 11 Possible damage to the device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
S3 12 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S0 13 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S1 14 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
S2 15 Corruption of the signal passed onto the D pin. If there is no limiting resistor in the switch path, then device damage is possible. A
VDD 16 Possible damage to the device if the signal voltage is negative. Observe that the absolute maximum ratings for all pins of the device are met, otherwise device damage may be possible. A
Thermal Pad - No connect pin electrically floating, no effect. D