CD74HC4046AMG4

Overview

The CD74HC4046AMG4 is a high-speed CMOS logic phase-locked loop (PLL) integrated circuit manufactured by Texas Instruments. It features a 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 maximum input frequencies up to 38 MHz. It is housed in a 16-SOIC package with a width of 3.90 mm and functions reliably across an extended temperature range from -55°C to 125°C.

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 accommodate various loop filter requirements.
• Features self-biasing input circuits that maintain small voltage signals within the linear region of the input amplifier.

Applications

• Frequency synthesis systems
• Motor speed control loops
• FM demodulation circuits

Procurement Notes

Verify the presence of the 'G4' suffix to confirm compliance with RoHS 3 standards and lead-free manufacturing specifications. Ensure the ordering part number matches the 16-SOIC package variant to avoid discrepancies with other pin-compatible packages such as DIP or TSSOP.

Selection Notes

Select this component when a wide supply voltage range between 2 V and 6 V is required for CMOS compatibility. The 38 MHz maximum frequency capability makes it suitable for general-purpose clock generation tasks where low power consumption is a priority over ultra-high-speed performance.

Part Context

This part belongs to the CD74HC4046A family, which provides pin compatibility with the legacy CD4046B series. The 'G4' designation indicates environmental compliance, while the 'AM' prefix specifies the surface-mount SOIC package format used for automated assembly processes.

Replacement Considerations

CD74HC4046AME4 serves as a previous generation compliant alternative. CD74HC4046AM is the standard non-compliant version. For through-hole applications, consider CD74HC4046AE.