This part is a kind of semiconductor called 74F125.

Function of this product has Quad buffers 3-State.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS 74F125, 74F126 Quad buffers (3-State) Product specification IC15 Data Handbook 1989 March 28 Philips Semiconductors Philips Semiconductors Product specification Quad buffers (3-State) 74F125, 74F126 FEATURE • High impedance NPN base inputs for reduced loading (20µA in High and Low states) ORDERING INFORMATION DESCRIPTION 14-pin plastic DIP 14-pin plastic SO COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F125N, N74F126N N74F125D, N74F126D PKG DWG # SOT27-1 SOT108-1 TYPE 74F125 74F126 TYPICAL PROPAGATION DELAY 5.0ns 5.0ns TYPICAL SUPPLY CURRENT (TOTAL) 23mA 26mA INPUT AND OUTPUT LOADING AND FAN OUT TABLE PINS D0–D3 OE0–OE3 OE0–OE3 Q0–Q3 Data inputs Output Enable inputs (active Low), 74F125 Output Enable inputs (active High), 74F126 Data [ ... ]

74F125 PDF Datasheet Download