SN75ALS181: the capacitance for each pin

Hi Masaharu,

These values are generally pretty low, but we don't have measurements readily available. I'm working on getting a hold of some parts to take some readings in the lab. I'll keep you updated on my findings.

Is the customer interested in a particular package for this device?

SN75ALS181N - PDIP (N)

SN75ALS181NSR - SO (NS)

Regards,

Eric

thanks your cooperation.

let me ask them.

please stay tuned.

the specific part number is SN75ALS181NSR

Hi Masaharu,

Thanks for the info. The parts should get here early next week and I'll take the measurements soon after. Let me know if there's anything else you need in the meantime.

Regards,

Eric

Hi, Eric-san,

thanks your cooperation.

can you provide it us by Jan 10th as JST since customer in Japan wants to get it by Jan 10th as japan time.

can you?

Hi Masaharu,

I've sent an email to you with some preliminary measurements for your reference. Once I can verify these with the units I have ordered, I will post the results to this thread.

Let me know if you have any questions.

Regards,

Eric

Capacitance values were estimated to follow the listed trends:

Between digital pins (R, RE#, DE, D) and GND: <100pF

Between bus pins (Y, Z, B, A) and GND: <50pF

Between all non-power pins: <20pF

Please inquire directly if you wish to know specific readings.

Regards,

Eric