This part is a kind of semiconductor called 7404.

Function of this product has TRIPLE VOLTAGE REGULATOR.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

M54HC04 M74HC04 HEX INVERTER . . . . . . . . HIGH SPEED tPD = 6 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 1 µA (MAX.) AT TA = 25 °C HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS04 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC04F1R M74HC04M1R M74HC04B1R M74HC04C1R PIN CONNECTIONS (top view) DESCRIPTION The M54/74HC04 is a high speed CMOS HEX INVERTER fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumptio [ ... ]

7404 PDF Datasheet Download