74LS Series – Texas Instruments SN74LS08N, This is the Texas Instruments SN74LS08N quad 2 input positive AND gate IC from the 74LS family. This is part of a range of low power Schottky devices offering the same speed as standard TTL but at a fifth of the power consumption. Texas Instruments SN74LS08N Quad 2 Input Positive AND Gates DIP14