Voltage controlled oscillator
+---+--+---+ 2FC |1 +--+ 16| VCC 1FC |2 15| OSC VCC 1RNG |3 14| 2RNG 1CX1 |4 74 13| 2CX1 1CX2 |5 629 12| 2CX2 /1EN |6 11| /2EN 1Y |7 10| 2Y OSC GND |8 9| GND +----------+