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LM393A: Can LM393ADR droip in replacement LM393MX ?

Part Number: LM393A
Other Parts Discussed in Thread: LM393-N, LM393, LM393B


Can LM393ADR drop in replacement LM393MX?

Any side effects or concerns?


  • Hello Paul,

    The LM393MX is the ex-National Semiconductor non-A version ( LM393-N ) with a max offset of 5mV and 250nA bias current.

    The LM393ADR is the TI "A" version ( LM393) with a max offset of 2mV and 250nA bias current.

    The LM393ADR is a higher grade than the LM393MX. You could use the lesser grade LM393DR with identical specs (5mV/250nA) as the LM393MX.

    You may wish to investigate the new & improved LM393B, which has lower offset, lower bias currents, improved ESD, wider temp range and lower cost.

    All are electrically identical and pin-out compatible.