2.1.8 Power-Up Sequence

To prevent permanent damage to the ADDA, ADDB, ADDC, and INH pin, the power supply voltage should be applied to the device first

followed by the voltage to ADDA, ADDB, ADDC, and/or INH. If it is not possible to follow this power-supply sequence, a 500kΩ resistor

can be placed in series with the digital I/O pins for protection as shown in the figure below. However, if an input voltage is applied be-

fore applying power to the switch/multiplexer, the device will not be damaged as the inputs are independent of the supply voltage.

Figure 2.5. Digital I/O Overvoltage Protection

Figure 2.6. TS4100-TS4102 Address/Enable Turn-On/Off Time Test Setup

TS4100/01/02 Data Sheet

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