NXP USA Inc. 74HC4046AD/AUJ

The 74HC4046AD/AUJ from NXP is a high-speed Phase Lock Loop (PLL) IC designed for clock generation and synchronization. It integrates one PLL circuit capable of operating up to 21 MHz, making it suitable for a wide range of timing applications. The device accepts a clock input and provides a clock output, with a wide supply voltage range and robust -40°C to 125°C temperature tolerance. Housed in a compact 16-SOIC package, this PLL is ideal for motor control, frequency demodulation, and clock multiplication in industrial and consumer electronics.

• Wide Temperature Range: Operates from -40°C to 125°C, ensuring reliability in harsh industrial environments.
• Integrated PLL: Includes phase detector and VCO, reducing external component count and simplifying design.
• High Frequency Capability: Supports up to 21 MHz, suitable for many microcontroller and communication applications.
• Compact SOIC Package: 16-SOIC footprint saves board space, ideal for space-constrained designs.

Motor Speed Control

Use the 74HC4046AD/AUJ to lock a motor's speed to a reference clock. The PLL's phase detector and VCO create a feedback loop that maintains precise RPM, ideal for industrial automation.

Frequency Demodulation

In FM demodulation circuits, the PLL tracks the input frequency and converts it to a voltage. This is useful in audio receivers and telemetry systems where 21 MHz bandwidth is sufficient.

Clock Multiplier for Microcontrollers

Generate higher-frequency clocks from a low-frequency reference. The PLL can multiply a 1 MHz crystal to 21 MHz, providing a stable clock for MCUs in embedded systems.

Data Synchronization

Recover clock signals from data streams in serial communication. The PLL locks onto the data transitions, ensuring synchronized sampling in UART or SPI interfaces.

Test and Measurement Equipment

Use as a frequency synthesizer in signal generators. The PLL provides a stable, tunable output for calibration and testing within the 21 MHz range.

Phase-Locked Tone Decoder

Implement tone detection for remote control or paging systems. The PLL locks to a specific frequency, triggering an output only when the correct tone is present.

Q: What type of device is the 74HC4046AD/AUJ?

A: It is a Phase Lock Loop (PLL) IC from NXP USA Inc., designed for clock generation and synchronization.

Q: Does this PLL support phase-locked loop functionality?

A: Yes, the PLL is integrated and fully functional, providing phase detection and VCO capabilities.

Q: What are the input and output types?

A: Both input and output are clock signals, typically single-ended. The device accepts a clock input and delivers a clock output.

Q: How many circuits are included?

A: The device contains 1 PLL circuit.

Q: What is the maximum operating frequency?

A: The maximum frequency is 21 MHz.

Q: What is the package and temperature range?

A: It comes in a 16-SOIC package (0.154", 3.90mm width) and operates from -40°C to 125°C.

• 74HC4046AD/AUJ.pdf

Q: What type of device is the 74HC4046AD/AUJ?

A: It is a Phase Lock Loop (PLL) IC from NXP USA Inc., designed for clock generation and synchronization.

Q: Does this PLL support phase-locked loop functionality?

A: Yes, the PLL is integrated and fully functional, providing phase detection and VCO capabilities.

Q: What are the input and output types?

A: Both input and output are clock signals, typically single-ended. The device accepts a clock input and delivers a clock output.

Q: How many circuits are included?

A: The device contains 1 PLL circuit.

Q: What is the maximum operating frequency?

A: The maximum frequency is 21 MHz.

Q: What is the package and temperature range?

A: It comes in a 16-SOIC package (0.154", 3.90mm width) and operates from -40°C to 125°C.