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Original question:

LM2901: Protection of LM2901

LM2901: LM2901 vs TLV1704

Vladimir Naumenkov
Expert 2970 points
Part Number: LM2901
Other Parts Discussed in Thread: TLV1704, TLV1701, LM339, LM393

Dear Sir, please answer

There is feature description from LM2901 datasheet, page 10: "The output NPN sinks current when the positive input voltage is higher than the negative input voltage and the offset voltage."

I'm going to replace LM2901 by TLV1704, so I want to clarify: will TLV1704 be the opposite?  That is:  "The output NPN sinks current when the negative input voltage is higher than the positive input voltage and the offset voltage?"  I have not found a similar description in TLV1704 datasheet.

Please see attach  TLV1701.TSC .    I have not found  LM2901.TSC file.

TIA

Sincerely,

Vladimir Naumenkov

TLV1701.TSC

lm2901.pdf

TLV1704.pdf

  • 0
    TI__Guru 62746 points

    Hello Vladimir,

    The description in the LM339 family datasheet is incorrect. We are in the process of getting it corrected.

    The description on the sister part LM393 is correct. The corrected text is:

    The output consists of an open drain NPN (pull-down or low side) transistor. The output NPN will sink current
    when the negative input voltage is higher than the positive input voltage and the offset voltage.

    The TLV1704 will drop-in replace the LM393 and the logic will be correct.

  • 0 in reply to Paul Grohe
    Expert 2970 points
    Dear Paul, thank you
    I'd like to replace LM339(LM2901) by TLV1704.
    You mean that LM339, LM393, TLV1704 have equal logic?