SN65LVELT23: VIH,VIL,VIHCMR

Yuto Sakai

Part Number: SN65LVELT23

Hi,

I understand that VIH, VIL and VIHCMR are the voltage levels in the following figure.
Is it correct?

Best regards,
Yuto Sakai

over 5 years ago

0 David (ASIC) Liu over 5 years ago

TI__Guru**** 157736 points

Yuto-san

The diagram is correct. The two important parameters are the VPP and VIHCMR, please make sure the input signal can met these two requirements.

Thanks

David

0 Yuto Sakai over 5 years ago in reply to David (ASIC) Liu

Mastermind 6100 points

Hi David-san,

Thank you for your reply.
I would like to ask additional questions.

I do not understand what the definition of VIHCMR.

I believe that VIHCMR is the middle value of the differential input signal, and is the range 1.2 to Vcc,is it correct?
And, I understand that it is necessary to input a signal that keeps the input swing within VPP,is it correct?

Best regards,
Yuto Sakai

0 David (ASIC) Liu over 5 years ago in reply to Yuto Sakai

TI__Guru**** 157736 points

Yuto-san

VIHCMR min is 1.2V and max is 3.3V. The common mode range places an upper and lower boundary on the differential high input level.

The input signal swing has to be with in the VPP range.

Thanks

David

0 Yuto Sakai over 5 years ago in reply to David (ASIC) Liu

Mastermind 6100 points

Hi David-san,

Thank you for your reply.
Does it mean that VIH and VIL are just measurement data and not the definition of range?
How is the upper and lower limits determined by VIHCMR?

Best regards,
Yuto Sakai

0 David (ASIC) Liu over 5 years ago in reply to Yuto Sakai

TI__Guru**** 157736 points

Yuto-san

VIHCMR lower and upper limit is determined by the device type.

The differential signal levels are specified as Vpp and VIHCMR, these are the two parameters that need to be met.

Thanks

David

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SN65LVELT23: VIH,VIL,VIHCMR