CD74HC4046AM96

Overview

The CD74HC4046AM96 is a high-speed CMOS phase-locked loop (PLL) integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports a maximum frequency of 38 MHz. The device features a linear voltage-controlled oscillator (VCO) and three distinct phase comparers, including two open-collector outputs and one exclusive-OR gate. Designed for surface-mount applications, it utilizes a 16-SOIC package with a width of 3.90 mm. The component functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Integrates a linear voltage-controlled oscillator (VCO) utilizing linear operational amplifier technology for improved linearity.
• Provides three selectable phase comparison options: Phase Comparer 1 (PC1), Phase Comparer 2 (PC2), and Phase Comparer 3 (PC3).
• Features a self-biasing input circuit designed to maintain small voltage signals within the linear region of the input amplifier.
• Supports direct coupling for large voltage signals or indirect capacitive coupling for small voltage signals.

Applications

• Frequency synthesis systems requiring stable clock generation.
• FM demodulation circuits leveraging the internal VCO characteristics.
• Motor speed control loops utilizing PLL feedback mechanisms.
• Clock recovery circuits in digital communication interfaces.

Procurement Notes

Verify the specific 'M96' suffix against the manufacturer's official documentation to confirm package dimensions and tape-and-reel specifications. Ensure the ordering information matches the required 16-SOIC form factor. Cross-reference the datasheet revision history to validate electrical parameters before finalizing procurement orders.

Selection Notes

Select this component when a wide supply voltage range (2 V to 6 V) and high-speed operation up to 38 MHz are required. The HC series offers faster switching speeds compared to standard 4000B logic while maintaining CMOS low-power advantages. Consider the available phase comparer types based on the specific jitter tolerance and lock-in range requirements of the target application.

Part Context

This part belongs to the Texas Instruments 74HC4046A family of high-speed CMOS logic devices. It maintains pin compatibility with the legacy CD4046B series, facilitating design upgrades. The device is part of the broader 74HC logic portfolio, which bridges the performance gap between standard 4000B and 74HCT logic families.

Replacement Considerations

The CD74HC4046AE serves as a through-hole alternative in a 16-DIP package. For SOIC packages, the CD74HC4046AM is a compatible variant. Verify that any substitute maintains the same 2 V to 6 V operating voltage and 38 MHz frequency capability.