The MC44144 is a gated phaselocked loop intended for, but not restricted to, video applications. The integrated circuit contains a gated phase detector, voltage controlled crystal oscillator, divideby4 circuitry, and a video clamp. This device provides a 4X reference frequency output, and a 1X reference frequency output. The MC44144 is manufactured using Motorola's high density, bipolar MOSAICTM process.