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AM26C32: Differences between AM26C32IPWR and AM26LS32ACPWR, and what are the concerns when replacing them

Guru 10665 points
Part Number: AM26C32
Other Parts Discussed in Thread: AM26LS32AC

Hi, 

Customer has adopted AM26C32IPWR but needs to replace due to availability. They are considering AM26LS32ACPWR as a replacement product.

What are the differences between AM26C32IPWR and AM26LS32ACPWR, and what are the concerns when replacing them?

Thanks,

Astro

  • The AM26C32 was designed as a replacement for the AM26LS32AC. The LS uses five times more power.

  • Since each datasheet is different, is it possible to tell me the difference as much as possible? It seems that the temperature range and current consumption are different. 

  • The LS device has higher power consumption, a narrower temperature range, a wider input voltage range, a slightly slower speed, and a lower output voltage (TTL, so it will not be able to drive a 5 V CMOS input).

  • Hi Astro,

    The high level differences are shown below:

    The AM26LS32AC has a lower operating temperature, consumes a max of 70mA (compared to the 15mA) for ICC, but has a higher abs max for differential bus inputs. 

    These are the largest differences for operation between the parts. So there is risk with the largest being the lower temperature range as <0C for the operation is out of spec for the "AC" device. 

    Please let me know if there are any other questions!

    Best,

    Parker Dodson