This part is a kind of semiconductor called 74LS12.

Function of this product has RETRIGGERABLE MONOSTABLE MULTIVIBRATORS.

Manufacturers : Motorola

Image and pinout :

Some of the text within the PDF file :

SN54/74LS12 TRIPLE 3-INPUT NAND GATE TRIPLE 3-INPUT NAND GATE V CC 14 13 12 11 10 9 8 LOW POWER SCHOTTKY * * * 1 2 3 4 5 6 7 GND J SUFFIX CERAMIC CASE 632-08 14 1 * OPEN COLLECTOR OUTPUTS 14 1 N SUFFIX PLASTIC CASE 646-06 14 1 D SUFFIX SOIC CASE 751A-02 ORDERING INFORMATION SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC GUARANTEED OPERATING RANGES Symbol VCC TA VOH IOL Supply Voltage Operating Ambient Temperature Range Output Voltage 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 5.5 4.0 8.0 Unit V °C V mA FAST AND LS TTL DATA 5-42 SN54/74LS12 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK IOH VOL Parame [ ... ]

74LS12 PDF Datasheet Download