74x05 |} {| class="wikitable" |- ! Configuration !! AND !! NAND !! OR !! NOR !! XOR !! XNOR |- | Quad 2-input || 74x09 || 74x03 || style="background: grey; text-align: center;" | n/a || 74x33 || 74x136 || 74x266 |- | Triple 3-input || 74x15 || 74x12 || style="background: grey; text-align: center;" | n/a || style="background: grey; text-align: center;" | n/a || style="background: grey; text-align: center;" | n/a || style="background: grey; text-align: center;" | n/a |- | Dual 4-input || style="background: grey; text-align: center;" | n/a || 74x22 || style="background: grey; text-align: center;" | n/a || style="background: grey; text-align: center;" | n/a || style="background: grey; text-align: center;" | n/a || style="background: grey; text-align: center;" | n/a |} Schmitt-trigger inputs / three-state outputs {| class="wikitable" |- ! Configuration !! Buffer !Inverter |- | Octal 1-input || 74x241 74x244 | 74x240 |} AND-OR-invert (AOI) logic gates NOTE: in past decades, a number of AND-OR-invert (AOI) parts were available in 7400 TTL families, but currently most are obsolete. SN5450 = dual 2-2 AOI gate, one is expandable (SN54 is military version of SN74) SN74LS51 = 2-2 AOI gate and 3-3 AOI gate SN54LS54 = single 2-3-3-2 AOI gate Larger footprints Parts in this section have a pin count of 14 pins or more. The lower part numbers were established in the 1960s and 1970s, then higher part numbers were added incrementally over decades. IC manufacturers continue to make a core subset of this group, but many of these part numbers are considered obsolete and no longer manufactured. Older discontinued parts may be available from a limited number of sellers as new old stock (NOS), though some are much harder to find. For the following table: Part number column the "x" is a place holder for the logic subfamily name. For example, 74x00 in "LS" logic family would be "74LS00". Description column the terms Schmitt trigger, open-collector/open-drain, three-state were moved to the input and output columns to make it easier to sort by those features. Input column a blank cell means a normal input for the logic family type. Output column a blank cell means a "totem pole" output, also known as a push–pull output, with the ability to drive ten standard inputs of the same logic subfamily (fan-out NO = 10). Outputs with higher output currents are often called drivers or buffers. Pins column number of pins for the dual in-line package