This part is a kind of semiconductor called 74LS04B1.
Function of this product has (T74LS04B1) Hex Inverter.
Manufacturers : SGS-Ates
Image and pinout :
Some of the text within the PDF file :
w w a D . w S a t e e h U 4 t m o .c w w w .D t a S a e h U 4 t e m o .c w w w .D at h S a t e e 4U . m o c [ ... ]
74LS04B1 PDF Datasheet Download
