This part is a kind of semiconductor called MB8719.

Function of this product has PLL Synthesizer.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

MB8719 MB8734 RCI8719 PLL Synthesizer Overview This PLL-circuit use a 6 bit (MB8734 and RCI8719) or 7 bit (MB8719) BCD binary programmable divide-by-N counter. DownDown-converting of the frequency to the divider divider This PLL Circuit use a Mixer and a X-Tal Oscillator to convert the output frequency f Circuit. The X-Tal frequency is f XTAL OUT to the f IN to the PLL =f OUT -f IN The output frequency can be changed by changing the mixing-xtal or add a new mixing-xtal to the oscillator. Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Out In Out In CP LD Name Inverter out Inverter in Inverter out Inverter in Charge Pump Loop Detect Oscillator input Oscillator output Positive Power Supply Description OSC in OSC out VDD P6 P5 P4 P3 P2 P1 P0 F in VSS Programmable inputs (Bin [ ... ]

MB8719 PDF Datasheet Download