Quad op-amp in a 14-SOIC — the LM324DT
The STMicroelectronics LM324DT is a quad general-purpose operational amplifier in a 14-SOIC surface-mount package. It is the tape-and-reel variant of the industry-standard LM324, offering four independent op-amps in a single 3.90 mm-wide SOIC body. Each of the four amplifiers delivers a 1.3 MHz gain-bandwidth product with a 0.4 V/µs slew rate, drawing 1.5 mA total supply current. The supply span runs from 3 V to 30 V, making it a single-supply part that also handles split rails.
This means STMicroelectronics has flagged the part for eventual discontinuation — it is still available for existing BOM lines but should not be selected for new product introductions. For a production BOM already using the LM324DT, the NRND status means the window for last-time-buy planning is open.
14-SOIC footprint and temperature grade
The package is a 14-SOIC (0.154-inch body width, 3.90 mm width), supplier device package 14-SO. Surface-mount only — no DIP variant here.
Where the LM324DT fits and where it does not
The 1.3 MHz GBP and 0.4 V/µs slew rate place this squarely in the general-purpose signal-conditioning class — sensor buffers, active filters below 100 kHz, DC level shifting, and comparator duty. It is not a high-speed or precision part; the 20 nA input bias and 2 mV offset are typical for this class, not competitive with precision op-amps.