# TPD5S115: The difference of three electrical charcteristics VIL, VILC and VILA

Part Number: TPD5S115

Hello ,

There are  three  electrical charcteristics : VIL,  VILC and  VILA in the datasheet of  TPD5S115.  Can you help tell me the differences of these 3  charcteristics?

If I want the SCL_A   level are regonized  by tpd5s115 as  a Low,  the voltage level on SCL_A Pin  should  be lower than VIL or VILC or VILA?

Thank  you !

### 2 Replies

• Hello,

I apologize for how confusing it seems,

The SCL_A low level for your system should <0.082*VCCA which if VCCA is 1.8V means that a "0" to TPD5S115 is any voltage <140mV.

Regards,

Cameron

• In reply to Cameron Phillips:

Hi, Cameron

I'm not sure I got your  meaning correctly.

VILC=0.065*VCCA ,

VILA=0.082*VCCA ,  " VILA" means  " VIL MAX"

Is it right?

Becase I see one description in datasheet page 17    8.2.1.2.1 part .

"To be recognized as a zero, the level at port A must first go below 130 mV (VILC in spec) and then stay below 170 mV (VILA in spec)"