SN65LVEP11 / Single ended input at the condition of Vcc =2.5V; Vee=0V

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: SN65LVEP11

Hello,

In the data sheet of SN65LVEP11 data sheet P.3 , there is "PECL DC CHARACTERISTICS (Vcc=2.5V, Vee=0.0V).

And there are VIH(single-ended) and VIL(single-ended).

However, there is "Single ended input clock pin operation is limited to VCC ≥ 3.0 V in PECL mode." in Note(4).

I think that there is discrepancy , becasue this is Vcc=2.5V characteristics , but single-ended opearation need Vcc>3.0V.

Could you please kindly let me know this reason ?

Best Regards,

Ryuji Asaka

0 Michael Peffers over 13 years ago

Hi Ryuji,

This note in the data sheet in stating that if a single ended clock input is going to be used that a V_CC level of 3.3V is required.

I interpret the data sheet V_IH (Single-ended) and V_IL (Single-ended) levels as the measured max and min values for those pins in both V_CC cases.

Regards,

Mike

0 Ryuji over 13 years ago in reply to Michael Peffers

Guru 20090 points

Hello Mike san,

Thank you for the reply.

And I'm sorry that I can't understand your information...

Is below my understanding correct?

(1) This device can not single-ended operate at the condition of Vcc=2.5V.

(2) V_IHand V_IL spec in below picuture is not meaning of Vcc=2.5V operation.

This min/max value for 3.0V < Vcc<3.3V opearation.

Because, there is Vcc=3.3V DC characteristics separately.

Best Regards,

Ryuji Asaka

0 Avi Chami1 over 13 years ago in reply to Ryuji

In my opinnion it looks like a copy-paste typo, note (4) for 2.5V operation is not related at all to single ended but to differential.

0 Ryuji over 13 years ago in reply to Ryuji

Guru 20090 points

Hello Mike san,

I understand that meaning of V_IH and V_IL single-ended finally.

Sorry for bothering you.

If I will get new question I will post again.

Thank you.

Best Regards,

Ryuji Asaka

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