This part is a kind of semiconductor called 74AC14.

Function of this product has Hex Inverter with Schmitt Trigger Input.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

74AC14 HEX INVERTER s s s s s s s s s HIGH SPEED: tPD = 6 ns (TYP.) at VCC = 3.3V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA = 25 oC HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 14 IMPROVED LATCH-UP IMMUNITY B M (Plastic Package) (Micro Package) ORDER CODES : 74AC14B 74AC14M equivalent Bipolar Shottky TTL. The internal circuit is composed of 3 stages including buffer output, which enables high noise immunity and stable output. This together with its schmitt trigger function allows it to be used on line receivers with slow rise/fall input segnal [ ... ]

74AC14 PDF Datasheet Download