AM26C31: VOH, VOL vs output current

Hi Hao-san,

The above characteristics of the AM26C31 and the THVD1500 seems to be different as below.

Can we refer to this figure truly?

Best Regards,

Kuramochi

Hao-san,

Thank you for your help.

Could you provide the Vol data also?

Best Regards,

Kuramochi

Hao-san,

We have an additional request.

Could you provide the Voh and Vol graph by the document format including product name(AM26C31) and "Texas Instruments"?

Best Regards,

Kuramochi

Kuramochi-san,

I will get the Voh and Vol data in a week.

Regards,

Hao

Hello Hao-san,

How is this situation?

Best Regards,

Kuramochi

Kuramochi-san,

I'm sorry for the delay. The data will be available in a couple of days. Regards,

Hao

Kuramochi-san,

Again sorry for the delay. Here is the data.

Please let me know if you have more questions.

Regards,

Hao

Hao-san,

Thank you for your support.

How about the document format?

>>Could you provide the Voh and Vol graph by the document format including product name(AM26C31) and "Texas Instruments"?

Best Regards,

Kuramochi

Hao-san,

Could you give the measurement condition and the legend?

Best Regards,

Kuramochi

Kuramochi-san,

Here is the file.

Please let me know if you any more questions.

Regards,

Hao

Hao-san,

Thank you for your support.

Could you provide also the PDF version?

I'm sorry for troubling you.

Best Regards,

Kuramochi

Do you have the same graph for the the DS26LS31 and DS26LV31?

I am deciding which to use, and the data sheets are not helpful. Section 9.2.3 has a "application curve" which is the same for all 3 devices, and appears to show the output waveform along with another waveform called A/B.

In the case of the LV the output voltage exceeds the supply voltage. Is this correct?

What is the A/B waveform? I assumed it was the differential waveform at the receiver, but the voltage is lower than the output voltage when I would expect it to be about double. Or is it the input voltage?

Ian,

On AM26C31's datasheet, Figure 9 shows the input TTL signal and the differential output bus signal. The red curve is the voltage of A-B. All 3 devices you mentioned are drivers. What's your application and which parameter would help you make the decision?

Regards,

Hao

Thanks. That is rather confusing as in the rest of The datasheet Y (along with Z) is an output and A is an input.

The graphs also implies that the output signal happens about 10ns BEFORE the input, I would suspect that this graph actually belongs on the line RECEIVER datasheet?

if everything else is equal, then I’ll use the CMOS as it is lower power, and you are less likely to discontinue it, as the others appear to be closely related to legacy TTL.

Ian,

You are correct. It would make more sense that the graph were on the receiver's datasheet.

If 3.3V supply is acceptable, you may want to take a look at AM26LV31E that works with up to 32MHz and has better ESD protection.

Regards,

Hao