This part is a kind of semiconductor called 74LS04.

Function of this product has Hex Inverting Gates.

Manufacturers : National Semiconductor

Image and pinout :

Some of the text within the PDF file :

54LS04 DM54LS04 DM74LS04 Hex Inverting Gates June 1989 54LS04 DM54LS04 DM74LS04 Hex Inverting Gates General Description This device contains six independent gates each of which performs the logic INVERT function Features Y Alternate Military Aerospace device (54LS04) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6345 – 1 Order Number 54LS04DMQB 54LS04FMQB 54LS04LMQB DM54LS04J DM54LS04W DM74LS04M or DM74LS04N See NS Package Number E20A J14A M14A N14A or W14B Function Table YeA Input A L H H e High Logic Level L e Low Logic Level Output Y H L C1995 National Semiconductor Corporation TL F 6345 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devic [ ... ]

74LS04 PDF Datasheet Download