MC44817 circuits equivalent, tv and vcr pll tuning circuits.
High Sensitivity Preamplifier Circuit to Detect Phase Lock Fully ESD Protected
DA 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 EN Lock VCC3 12 V B3 B2 B1 B0 Gnd D SUFFIX PLASTI.
They contain on one chip all the functions required for PLL control of a VCO. The integrated circuits also contain a hi.
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