CD74HC4046ANSRE4

Overview

The CD74HC4046ANSRE4 is a high-speed CMOS logic phase-locked loop (PLL) integrated circuit manufactured by Texas Instruments. It features an integrated voltage-controlled oscillator (VCO) and three distinct phase comparators within a single circuit configuration. The device operates on a supply voltage range of 2 V to 6 V and supports a maximum input frequency of 38 MHz. It is housed in a 16-pin SOIC package with surface-mount installation. The component functions reliably across an extended temperature range from -55 °C to +125 °C, ensuring stable performance in demanding electronic environments.

Feature Summary

• Integrates a linear voltage-controlled oscillator (VCO) utilizing operational amplifier technology for improved linearity.
• Includes three selectable phase comparators (PC1, PC2, and PC3) to support various loop filter configurations.
• Features a self-biasing input circuit designed to maintain small voltage signals within the linear region of the input amplifier.

Applications

• Frequency synthesis circuits
• Clock recovery systems
• Motor speed control applications

Procurement Notes

Verify the specific suffix 'E4' confirms lead-free compliance and RoHS standards as per manufacturer documentation. Confirm the 'SR' designation indicates tape-and-reel packaging suitable for automated surface-mount assembly processes. Ensure the SOIC-16 footprint matches the target PCB layout dimensions before finalizing procurement orders.

Selection Notes

Select this component when a wide supply voltage range of 2 V to 6 V is required for PLL applications. Choose this part over HCT variants if lower power consumption at reduced voltages is prioritized over noise immunity. Verify that the 38 MHz maximum operating frequency meets the system's clock generation requirements.

Part Context

This part belongs to the Texas Instruments CD74HC4046A family of high-speed CMOS logic devices. It maintains pin compatibility with the legacy CD4046B series while offering significantly faster switching speeds. The E4 suffix denotes environmental compliance, specifically indicating a lead-free finish consistent with JEDEC standards for modern electronic components.

Replacement Considerations

The CD74HC4046AN serves as a direct through-hole alternative with identical electrical characteristics. Surface-mount equivalents include the CD74HC4046APWR and CD74HC4046APWT. Verify package dimensions and thermal properties when substituting between DIP, SOIC, and TSSOP formats.