This part is a kind of semiconductor called 74S04.

Function of this product has HEX INVERTING GATES.

Manufacturers : National Semiconductor

Image and pinout :

Some of the text within the PDF file :

DM54S04 DM74S04 Hex Inverting Gates DM54S04 DM74S04 Hex Inverting Gates General Description This device contains six independent gates each of which performs the logic INVERT function Connection Diagram Dual-In-Line Package June 1989 TL F 6442 – 1 Order Number DM54S04J DM54S04W DM74S04M or DM74S04N See NS Package Number J14A M14A N14A or W14B Function Table YeA Input Output AY LH HL H e High Logic Level L e Low Logic Level C1995 National Semiconductor Corporation TL F 6442 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage 7V Input Voltage 5 5V Operating Free Air Temperature Range DM54S b5 [ ... ]

74S04 PDF Datasheet Download