SN74CBT16233: Vcc installation capacitor and connection method

All Vcc and GND pins must be connected.

More recent TI datasheets all have this text:

Each VCC terminal should have a good bypass capacitor to prevent power disturbance. For devices with a single supply, a 0.1-μF bypass capacitor is recommended. If multiple pins are labeled VCC, then a 0.01-μF or 0.022-μF capacitor is recommended for each VCC because the VCC pins are tied together internally. […] The bypass capacitor should be installed as close to the power terminal as possible for best results.

Hi Yusuke,

1. All VCC are essentially shorted together - we recommend that the total capacitance on the VCC line is 0.1uF to 10uF for most of our multiplexer devices - but staying on the low side is fine. Since there are multiple VCC pins the capacitors should be split up into smaller capacitances so that they can be placed close to each VCC pin and as long as the total capacitance is in that range there shouldn't be an issue.

2. All Pins Labeled VCC need to have the VCC voltage applied to w.r.t. ground. With this being a larger switch the extra VCC pins are needed, not connecting them risks the internal switches not being biased correctly and the device could either not work correctly or take damage. So it is important to connect every VCC pin. 

If you have any other questions please let me know!

Best,

Parker Dodson