CDCV304: Absolute input voltage VI and output resistance

Hailiang Zhang

Part Number: CDCV304
Other Parts Discussed in Thread: SN65EPT22

Hi Team,

The spec says input voltage of CDCV304 shall be -0.5≤VI≤VCC+0.5, does this consider the input signal’s overshoot and undershoot? How about SN65EPT22?

What is the output impedance after CDCV304 is enabled?

Regards，
Hailiang

over 1 year ago

0 Asim Khan over 1 year ago

TI__Genius 9250 points

Hi Hailang,

Yes, this covers the input overshoot condition.

Hailiang Zhang said:
SN65EPT22

Could you provide a correct name for the device? I am unable to access that device's datasheet.

Best,

Asim

0 Hailiang Zhang over 1 year ago in reply to Asim Khan

TI__Expert 6085 points

HI Asim,

Pls find the DS here.

SN65EPT22 data sheet, product information and support | TI.com

In other words, taking the overshoot and undershoot into account, the input signal must meet the Spec on the data sheet?

Could you help with the output resistor when CDCV304 is enabled?

Best regard

Thanks

0 Hailiang Zhang over 1 year ago in reply to Hailiang Zhang

TI__Expert 6085 points

Hi Asim,

Since the datasheet says input voltage of CDCV304 shall be -0.5≤VI≤VCC+0.5,

How to explain the condition highligted below?

Regards,

Hailiang

0 Asim Khan over 1 year ago in reply to Hailiang Zhang

TI__Genius 9250 points

Hi Hailiang,

Hailiang Zhang said:
Could you help with the output resistor when CDCV304 is enabled?

You can find output impedance information on this E2E post (link).

Hailiang Zhang said:
Since the datasheet says input voltage of CDCV304 shall be -0.5≤VI≤VCC+0.5,

How to explain the condition highligted below?

This input clamp voltage value is for information purpose. Abs max values in the datasheet is defined to avoid these large current through the input.

SN65EPT22 is a logic conversion buffer from interface group. Can you help explain if you are looking for the same information as CDCV304? I am not familiar with those part since they are from a different group. They have input specification in abs max table.

Best,

Asim

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CDCV304: Absolute input voltage VI and output resistance