MM74HC4046MX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Phase-Locked Loop (PLL) with Voltage Controlled Oscillator (VCO)
• Characteristics: High-speed operation, low power consumption, wide operating voltage range
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The MM74HC4046MX is a versatile PLL IC that can be used in various applications requiring frequency synthesis, frequency multiplication, and frequency demodulation.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Frequency Range: Up to 10MHz
• Phase Detector Frequency Range: DC to 2MHz
• Lock Range: ±2.5% of VCO Center Frequency
• Output Drive Capability: 10 TTL Loads

Detailed Pin Configuration

The MM74HC4046MX has a total of 16 pins arranged as follows:

1. Pin 1: Phase Comparator Input A
2. Pin 2: Phase Comparator Input B
3. Pin 3: Phase Comparator Input C
4. Pin 4: Phase Comparator Output
5. Pin 5: VCO Control Voltage Input
6. Pin 6: VCO Ground
7. Pin 7: VCO Output
8. Pin 8: VCO Power Supply
9. Pin 9: Filter Ground
10. Pin 10: Filter Input
11. Pin 11: Filter Output
12. Pin 12: Reset
13. Pin 13: Lock Indicator
14. Pin 14: Reference Ground
15. Pin 15: Reference Input
16. Pin 16: Reference Output

Functional Features

• Phase Comparator: Compares the phase difference between the reference input and the VCO output.
• Voltage Controlled Oscillator (VCO): Generates an output frequency based on the control voltage applied.
• Filter: Provides filtering of the VCO output to remove unwanted noise and harmonics.
• Lock Indicator: Indicates whether the PLL is locked to the reference input frequency.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick frequency synthesis. - Low power consumption makes it suitable for battery-powered applications. - Wide operating voltage range provides flexibility in different power supply scenarios.

Disadvantages: - Limited frequency range compared to some other PLL ICs. - Requires external components for proper operation, increasing complexity.

Working Principles

The MM74HC4046MX operates based on the principles of a Phase-Locked Loop (PLL). The PLL locks the output frequency of the VCO to the frequency of the reference input signal. The phase comparator compares the phase difference between the reference input and the VCO output, generating an error signal. This error signal is then filtered and used to control the VCO's output frequency through the control voltage input. The PLL continuously adjusts the VCO frequency until the phase difference is minimized, indicating lock.

Detailed Application Field Plans

The MM74HC4046MX can be used in various applications, including:

1. Frequency Synthesis: Generating precise frequencies for communication systems, clock generation, and audio applications.
2. Frequency Multiplication: Generating higher-frequency signals by multiplying the reference input frequency.
3. Frequency Demodulation: Extracting information from modulated carrier signals.

Detailed and Complete Alternative Models

Some alternative models to the MM74HC4046MX include:

1. CD4046BE: Similar functionality but with a different package (DIP).
2. MC14046B: Higher voltage range and wider operating temperature range.
3. CD74HC4046E: Similar functionality but with a different package (PDIP).

Note: This is not an exhaustive list, and there are several other alternative models available in the market.

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