4 Conclusion

Electrical fast transients (EFT) are a series of high voltage, fast frequency pulses that can strike analog input and output modules in factory automation programmable logic controller (PLC) systems. These burst, if not properly accounted for in system design, can cause issues with signal accuracy and potential permanent damage to components. To solve this problem TI has created fault protected multiplexers which have a feature called over voltage protection (OVP) that activates when voltages higher than supply are sent to the input pins. While protecting the signal chain components is important, the additional fast recovery time of TI’s fault protected multiplexers allow for accurate communication between PLC modules. This intern leads to system designers being able to generate Performance Criteria A based on EFT Burst test standards. For more information on fault protected multiplexers with fast recovery times please look at Table 4-1.