CD74HCT7046AMG4

Overview

The CD74HCT7046AMG4 is a high-speed CMOS phase-locked loop (PLL) integrated circuit manufactured by Texas Instruments. It integrates a voltage-controlled oscillator (VCO), a lock detector, and two phase comparators within a single 16-pin SOIC package. The device operates on a supply voltage range of 4.5 V to 5.5 V and supports maximum input frequencies up to 38 MHz. It is designed for robust performance across an extended industrial temperature range from -55°C to +125°C. The component complies with RoHS standards, indicated by the G4 suffix, ensuring it is lead-free.

Feature Summary

• Integrates dual phase comparators, a voltage-controlled oscillator, and a lock detector for complete frequency synthesis solutions.
• Features a wide operating supply voltage range compatible with standard 5 V logic systems.
• Supports operation in extreme environmental conditions with an extended industrial temperature rating.

Applications

• Frequency synthesizers for communication equipment
• Clock recovery circuits in data transmission systems
• Motor speed control applications

Procurement Notes

Verify the presence of the G4 suffix to confirm compliance with lead-free manufacturing processes and RoHS directives. Ensure the ordering part number matches the specific SOIC-16 package variant required for the design. Cross-reference the manufacturer's datasheet for the latest environmental declarations and handling instructions before finalizing procurement orders.

Selection Notes

Select this component when a 5 V HCT-compatible PLL is required with integrated VCO and lock detection capabilities. Verify that the system power supply remains within the 4.5 V to 5.5 V range to ensure proper operation. Consider the 16-SOIC package dimensions for PCB layout constraints and thermal management requirements during the design phase.

Part Context

This component belongs to the Texas Instruments 74HCT series of high-speed CMOS logic devices. It serves as a specialized timing solution within the broader family of programmable logic and analog mixed-signal products. The device provides a compact alternative to discrete PLL implementations, simplifying circuit design for frequency modulation and synchronization tasks.

Replacement Considerations

The CD74HC7046AM is a pin-compatible HC-series alternative offering wider voltage tolerance but different logic thresholds. The CD74HCT7046AM is the direct non-green equivalent without the RoHS-compliant G4 suffix. Verify electrical characteristics and packaging specifications before substituting these variants in existing designs.