This part is a kind of semiconductor called HCF4093B.

Function of this product has QUAD 2-INPUT NAND SCHMIDT TRIGGERS.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

HCC/HCF4093B QUAD 2-INPUT NAND SCHMIDT TRIGGERS . . . . . . . . . . SCHMITT-TRIGGER ACTION ON EACH INPUT WITH NO EXTERNAL COMPONENTS HYSTERESIS VOLTAGE TYPICALLY 0.9V AT VDD = 5V AND 2.3V AT VDD = 10V NOISE IMMUNITY GREATER THAN 50% OF VDD (typ.) NO LIMIT ON INPUT RISE AND FALL TIMES STANDARDIZED SYMMETRICAL OUTPUT CHARACTERISTICS QUIESCENT CURRENT SPECIFIED TO 20V FOR HCC DEVICE 5V, 10V, AND 15V PARAMETRIC RATINGS INPUT CURRENT OF 100nA AT 18V AND 25°C FOR HCC DEVICE 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC TENTATIVE STANDARD N°. 13A, ”STANDARD SPECIFICATIONS FOR DESCRIPTION OF ”B” SERIES CMOS DEVICES” EY (Plastic Package) F (Ceramic Frit Seal Package) M1 (Micro Package) C1 (Plastic Chip Carrier) ORDER CODES : HCC4093BF HCF4093BM1 HCF4093BEY HCF40 [ ... ]

HCF4093B PDF Datasheet Download