SN74LVCH162244A: Alternative part

Marvien Arcangel

Part Number: SN74LVCH162244A

Hi Team,

I just want to confirm if we can use SN74LVCH162244AGR instead of SN74ALVTH162244GR? They are pin compatible but their Isolation levels are different, SN74ALVTH162244GR is a Level 2, SN74LVCH162244AGR is a Level 1 as per this application note: https://www.ti.com/lit/an/scea026/scea026.pdf

Thanks in advance.

Regards,

Marvin

over 1 year ago

0 Emrys Maier over 1 year ago

TI__Guru* 96711 points

Hi Marvin,

What are the system requirements?

0 Marvien Arcangel over 1 year ago in reply to Emrys Maier

TI__Genius 9965 points

Hi Emrys,

Thank you.

The system is a big WDM shelf that has line cards, backplane and common control card; the SN74ALVTH162244GR had been used on common control card for some control signals hot pull/plug.

Let me know if you need more information.

Regards,

Marvin

0 Clemens Ladisch over 1 year ago in reply to Marvien Arcangel

Guru 271250 points

Does the control card need to be hot-pulled/-plugged? If not, then the behaviour of the SN74xxx162244 during power-up/-down does not matter.

0 Marvien Arcangel over 1 year ago in reply to Clemens Ladisch

TI__Genius 9965 points

Hi Clemens and Emrys,

Yes the card needs to be hot-pulled/-plugged.

Regards,

Marvin

0 Emrys Maier over 1 year ago in reply to Marvien Arcangel

TI__Guru* 96711 points

The fastest way to confirm for a pin to pin device would be to get samples and test a system -- does it work with the new device or not?

These devices are not identical, so it may not work. I can only guarantee the specifications and features in the datasheet.

Logic

Logic forum

SN74LVCH162244A: Alternative part