SN74HC14DR

SN74HC14DR is the tape-and-reel SOIC-14 ordering code for the Texas Instruments SN74HC14 hex Schmitt-trigger inverter, listed as ACTIVE on the TI buy page for this code. Status is per ordering code in this family: the tube form SN74HC14D is obsolete, and that status does not carry to this reel code. Verified thresholds, read on the TI electrical table at a 4.5 V supply: positive-going threshold of 1.55 V minimum, 2.5 V typical and 3.13 V maximum; negative-going threshold of 0.9 V minimum, 1.6 V typical and 2.45 V maximum; hysteresis of 0.4 V minimum, 0.9 V typical and 2.1 V maximum; quiescent supply current of 2 µA maximum at 25 °C and 20 µA maximum over the full range (at a 6 V supply, no load, inputs held at a rail), on a 2 V to 6 V supply, over −40 °C to +85 °C. The selection point is the hysteresis itself: six inverters that turn slow, noisy edges — RC time constants, sensor outputs, switch contacts — into clean logic transitions without a comparator build-up. Selection advice: thresholds scale with the supply, so a design qualified at 5 V must be re-checked at the rail you actually run; and the Nexperia 74HC14D,653 also listed in this catalog is a different maker’s code with its own threshold table — do not mix the two in one qualification. Parameters verified against the TI SN74HC14 datasheet SCLS085L (electrical characteristics table) and the TI product page.