HCF4046BEY

Clock Generators, PLLs, Frequency Synthesizers Overview

The HCF4046BEY is a micropower phase-locked loop (PLL) integrated circuit manufactured by STMicroelectronics. It features a linear voltage-controlled oscillator (VCO), two distinct phase comparators, and a common signal-input amplifier. The device operates on a supply voltage ranging from 3V to 20V with an operating temperature range of -55°C to +125°C. Typical quiescent power consumption is 70μW at VDD = 5V. The maximum operating frequency reaches 1.4MHz at VDD = 10V. It includes a Zener diode for supply regulation assistance and offers low-frequency drift characteristics.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual phase comparator architecture providing both exclusive-OR network and edge-controlled memory network options.
• Linear voltage-controlled oscillator (VCO) with source-follower output capability for demodulation applications.
• Integrated Zener diode designed to assist in supply voltage regulation.
• Low standby power consumption achieved through VCO inhibit control functionality.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Frequency synthesizer construction using external counters
• Demodulation circuits utilizing the source-follower output
• Clock recovery systems requiring low-power operation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity as this part number is listed as obsolete. Confirm that the specific ordering suffix matches the required package type. Ensure replacement components meet the original electrical specifications if direct substitution is necessary for ongoing production or maintenance.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a complete PLL solution is required within a single IC. Consider the available phase comparator types based on noise rejection requirements and lock range needs. Verify that external passive components fall within the specified resistance and capacitance ranges for stable operation.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the HCF4046B series of CMOS micropower phase-locked loops. It is housed in a 16-lead dual in-line plastic package. The product line is characterized by high input impedance and compatibility with standard CMOS logic families for frequency division applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitute: CD4046BE (Texas Instruments). Similar alternative: CD74HC4046AE (Harris Corporation/Texas Instruments).