CD4046BF

Overview

The CD4046BF is a CMOS micropower phase-locked loop (PLL) integrated circuit manufactured by Texas Instruments. It is housed in a 16-lead hermetic dual-in-line ceramic package (CDIP J). The device operates within a supply voltage range of 3V to 18V and supports an operating temperature range from -55°C to 125°C. It features a maximum frequency of 2.4MHz and includes two phase comparators, a voltage-controlled oscillator (VCO), and a reference divider.

Feature Summary

• Integrated voltage-controlled oscillator with external timing components
• Dual phase comparator architecture for flexible loop configurations
• Hermetic ceramic packaging suitable for harsh environments

Applications

• Frequency synthesis
• FM demodulation
• Motor speed control

Procurement Notes

Verify the specific suffix 'F' indicates the hermetic ceramic package variant when sourcing. Confirm RoHS compliance status as military-grade or standard catalog versions may differ. Ensure the supplier provides traceability documentation required for defense applications if applicable.

Selection Notes

Select this component when hermetic sealing is mandatory for environmental protection. Compare against plastic DIP variants like CD4046BE if cost reduction is prioritized over radiation resistance. Verify that the 2.4MHz VCO frequency range meets the system's modulation requirements.

Part Context

This part belongs to the CD4046B family of PLL ICs. It shares functional specifications with other package options such as the plastic DIP (CD4046BE) and small-outline packages (CD4046BNSR). The primary distinction lies in the physical construction and environmental rating provided by the ceramic housing.

Replacement Considerations

Direct substitutes include CD4046BF.A and CD4046BF3A. For non-hermetic applications, CD4046BE offers identical electrical performance in a plastic package.