LM324DR

LM324DR is the tape-and-reel SOIC-14 ordering code for the Texas Instruments LM324 quad operational amplifier, listed as ACTIVE. The figures here are read on the LM324 column only: input offset voltage of 3 mV typical and 7 mV maximum at 25 °C, input bias current of -20 nA typical and -250 nA maximum, supply current of 1.4 mA typical and 3 mA maximum for all four amplifiers, large-signal gain of 25 V/mV minimum and 100 V/mV typical, and a slew rate of 0.5 V/µs typical, on a single supply of 3 V to 30 V — the recommended operating range for the LM324 column in the current datasheet revision (§6.3); the 32 V figure attached to this family is its absolute-maximum stress rating (§6.1), not a working rail. The selection point is four commodity op amps in one package for control, monitoring and interface circuits that run from a single rail - the default quad of cost-driven industrial and consumer boards. Selection advice: the LM324 column is not the LM324B column - the newer B generation tightens offset and adds EMI filtering, so a design qualified on this original code should be re-checked rather than silently substituted if the BOM moves to the B device. Parameters verified against the TI LM324 datasheet SLOS066 (revised September 2025): recommended operating conditions, absolute maximum ratings and the LM324-column electrical table.