CD4046BK

Overview

The CD4046BK is a CMOS Phase-Locked Loop (PLL) integrated circuit manufactured by Harris Corporation. It features a 16-pin Flat Pack (FP) ceramic package with dual flat terminals spaced at 1.27 mm. The device operates within a supply voltage range of 5V to 15V and supports a maximum operating frequency of 38MHz. It is designed for military temperature applications, functioning reliably between -55°C and 125°C. The component utilizes tin/lead (Sn/Pb) terminal finishes and is classified as non-compliant with RoHS standards.

Feature Summary

• Integrated phase-locked loop architecture utilizing CMOS technology
• Hermetic ceramic packaging suitable for harsh environments
• Military-grade temperature rating for extreme operational conditions

Applications

• Frequency synthesis systems requiring stable locking
• FM demodulation circuits
• Motor speed control loops

Procurement Notes

Verify the specific ordering suffix and manufacturer origin carefully, as the CD4046BK designation may appear across different production eras or legacy stock. Confirm that the tin/lead finish meets project requirements, as this component is not RoHS compliant. Ensure the ceramic flat pack package dimensions align with the target PCB footprint before procurement.

Selection Notes

Select this component when hermetic sealing and wide temperature tolerance are critical. The ceramic package provides superior environmental protection compared to plastic variants. Verify that the 5V to 15V supply range fits the system design, as lower voltage options like the HC series exist for modern low-power applications.

Part Context

This part belongs to the CD4046 family of PLL ICs, originally developed by Harris Semiconductor, which was later acquired by Intersil and subsequently Renesas Electronics. The 'BK' suffix typically denotes the specific ceramic flat pack variant produced during the Harris era. This lineage explains the presence of both Harris and Intersil documentation in public records.

Replacement Considerations

Publicly confirmed substitute part numbers for the specific CD4046BK ceramic variant are not available in the provided data. Consider the CD4046BF or CD4046BEE4 for plastic alternatives, though package and material differences apply.