This part is a kind of semiconductor called 74260.

Function of this product has DUAL 5-INPUT NOR GATE.

Manufacturers : Motorola Inc

Image and pinout :

Some of the text within the PDF file :

SN54/74LS260 DUAL 5-INPUT NOR GATE VCC 14 13 12 11 10 9 8 DUAL 5-INPUT NOR GATE LOW POWER SCHOTTKY 1 2 3 4 5 6 7 GND J SUFFIX CERAMIC CASE 632-08 14 1 14 1 N SUFFIX PLASTIC CASE 646-06 14 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current High Output Current Low Parameter 54 74 54 74 54, 74 54 74 Min 4.5 4.75 – 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70 – 0.4 4.0 8.0 Unit V °C mA mA FAST AND LS TTL DATA 5-439 SN54/74LS260 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage 54 Input LOW Voltage 74 Input Clam [ ... ]

74260 PDF Datasheet Download