LM565CN

Phase-Locked Loop (PLL) Linear Integrated Circuit, standard 14-pin plastic dual-in-line package footprint. Houses a highly stable voltage-controlled oscillator (VCO) and double-balanced phase detector optimized for self-contained frequency tracking. Used in FM demodulators, telemetry decoders, data synchronizers, and tone decoding circuits. Industry exact equivalents include National Semiconductor LM565CN, Signetics NE565N, Texas Instruments LM565CN, and NTE989. Historical equipment applications include Bally Midway Xenon sound voice boxes, Oberheim OB-8 auto-tuning panels, Wurlitzer digital frequency loops, Sega early communication adapters, and custom Moog filter controllers.