38 MHz PLL with VCO and lock detect
The CD74HCT7046AMT is a single-circuit phase-locked loop from the 74HCT family, integrating a voltage-controlled oscillator (VCO) and a lock detector in a 16-SOIC package. It accepts CMOS-level inputs and delivers CMOS outputs, with a maximum operating frequency of 38 MHz.
5V-only rail, military temp range
Supply voltage is 4.5V to 5.5V — this is a 5V-only part. If your board runs a 3.3V logic core, you will need level shifters on the PLL I/O. The input-to-output ratio is 1:2: one reference input drives the VCO output and the lock-detector output. The lock detector gives a clean digital flag when the loop is settled, which saves an external comparator in frequency synthesis or FSK demodulation designs.
SOIC-16 footprint, surface-mount assembly
Packaged in a 16-SOIC (0.154-inch body width, 3.90 mm) for surface-mount reflow. The narrow SOIC footprint is common across the 74HCT logic family, so a board layout for a sibling part (e.g., CD74HCT7046AE in DIP) will need a different land pattern. No differential I/O — single-ended CMOS signalling only.