CD74HC4046APW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC4046APW is a High-Speed CMOS Phase-Locked Loop (PLL) IC from Texas Instruments featuring two phase comparators and a voltage-controlled oscillator. It operates from 2 V to 6 V and delivers frequency synthesis and clock recovery functions in a 16-pin SOIC package. Available from stock worldwide for communications, motor speed control, and frequency multiplication designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC4046APW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4899(MOQ 5)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC4046APW?
- Dual phase comparators (PC1 and PC2) allow selection between XOR and edge-triggered phase detection for flexible PLL loop filter design
- Integrated VCO with external RC tuning components enables frequency range from near DC to several MHz, supporting wide-range clock synthesis
- HC CMOS technology operates from 2 V to 6 V supply with low power consumption, suitable for battery-powered frequency synthesis applications
What is CD74HC4046APW used for?
The CD74HC4046APW is used in clock synchronization circuits, frequency multipliers, and tone decoders where a stable output frequency must track or multiply an input reference signal. It is also applied in motor speed control systems where the VCO output drives a PWM stage locked to a reference frequency, ensuring precise speed regulation. Communication equipment designers use it for FSK demodulation and clock recovery from serial data streams operating at frequencies up to several MHz.
What are the specifications of CD74HC4046APW?
| YTEOL | EYTEOL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Where can I find the CD74HC4046APW datasheet?
CD74HC4046APW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC4046APW?
Compatible alternatives and drop-in replacements for CD74HC4046APW:
Frequently Asked Questions
What are the two phase comparators in the CD74HC4046APW and when should each be used?
The CD74HC4046APW includes PC1, an XOR-type comparator that responds to both edges and works well for 50% duty-cycle signals, and PC2, a positive-edge-triggered, frequency-and-phase comparator with a tri-state output. PC2 is preferred in most PLL designs because it has a wider lock range, zero phase error at lock, and is less prone to false lock conditions than PC1.
What supply voltage range and maximum VCO frequency does the CD74HC4046APW support?
The CD74HC4046APW operates from a supply voltage of 2 V to 6 V. The VCO frequency range is set by external resistors R1 and R2 and capacitor C1; at 5 V supply the VCO can reach several MHz, and at 2 V the range is lower. For typical 5 V designs with appropriate RC values, frequencies from a few kHz to over 10 MHz are achievable.
How is the CD74HC4046APW used in a motor speed control application?
In motor speed control, the CD74HC4046APW locks its VCO output to a reference frequency representing the desired motor speed. A tachometer or encoder signal feeds back to the phase comparator input; any speed error produces a proportional correction voltage that adjusts the VCO and ultimately the motor drive PWM duty cycle. This closed-loop approach maintains speed accuracy within a few percent even under varying load conditions.
What external components are required to set the VCO frequency range of the CD74HC4046APW?
The VCO in the CD74HC4046APW requires two external resistors (R1 sets minimum frequency, R2 sets maximum frequency) and one external capacitor (C1). A bypass capacitor of at least 100 nF on the VDD pin is also recommended to reduce supply noise coupling into the VCO. The SOIC-16 package simplifies layout by grouping the VCO pins on one side of the IC.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $1.2541 | $6.27 |
| 10+ | $0.5643 | $5.64 |
| 90+ | $0.4899 | $44.09 |
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