Differ from AM26LV32C and AM26LV32E

Satoshi

Guru 19645 points

Other Parts Discussed in Thread: AM26LV32E, AM26LV32

Please let me know about difference of AM26LV32C and AM26LV32E below.

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①Before, I posted below E2E forum, is AM26LV32C have graph similar AM26LV32E?

(Is AM26LV32C graph same as AM26LV32E?)

https://e2e.ti.com/support/interface/industrial_interface/f/142/t/345257

②In the same before E2E forum written

"The AM26LV32E has a better fail safe that is missing the potential issue that the AM26LV32 has.",

How was AM26LV32E inprove?

③In the case of tesetd same board (replaced AM26LV32C to AM26LV32E on test circuit),

Output results were differ.(AM26LV32C:Output Low, AM26LV32E:Output High)

What could be the reason?

※Test data is attached.

CH1:IN+(xA), CH2:IN-(xB), CH3:OUT(xY), ch4:Clock

・AM25LV32C

・AM26LV32E

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Best regards,

Satoshi

over 9 years ago

0 Ron Michallick over 9 years ago

TI__Guru**** 164606 points

Satoshi san,

The noise on the inputs is too much for the AM26LV31C to ignore.

0 Satoshi over 9 years ago in reply to Ron Michallick

Guru 19645 points

Ronald-san

Thank you for reply.

Your answer is only ③, is it right?
On too much noise condition, but AM26LV32E normal operation.
Is AM26LV32E improvement noise?　
Or, is AM26LV32E have possibility the same result of AM26LV32C?

And, please let me know answer for question ① and ②.

Best regards,
Satoshi

0 Ron Michallick over 9 years ago in reply to Satoshi

TI__Guru**** 164606 points

Satoshi san,

I have not checked these two devices for noise rejection during no input.
I can't speak for the full population of devices.
Is this input line terminated with a load resistor matching the line impedance?

Interface

Interface forum

Differ from AM26LV32C and AM26LV32E