CD4046BK - 2.4MHz PLL Clock Synthesizer | Harris
MPN： CD4046BK ✗ 停產CD4046BK 概覽
A phase-locked loop is a feedback-control system that locks the frequency and phase of an output oscillator to an external reference. The CD4046BK belongs to the clock and timing IC hierarchy, combining a phase comparator, voltage-controlled oscillator, and auxiliary output circuitry. This makes it useful when a circuit needs programmable or reference-synchronized timing rather than a free-running oscillator.
The verified data specifically confirms a maximum operating frequency of 2.4 MHz and a 16-CFlatPack package. Other operating details, electrical limits, pin names, temperature grades, supply voltage, and current consumption were not supplied in the verified records and therefore must be confirmed from the manufacturer datasheet before design release. The listed Harris and Intersil source records also indicate historical manufacturer-source variation, so procurement should verify the exact manufacturer, package marking, and datasheet revision.
Typical design uses include low-frequency clock generation, frequency multiplication, tone generation, frequency-to-voltage conversion, phase-locked modulation, and instrumentation where a feedback loop maintains a controlled output. The loop filter, reference oscillator, and feedback divider are external circuit elements, allowing the system designer to set loop bandwidth and dynamic behavior. Actual performance depends on component tolerances, loop filter design, supply voltage, and the complete application circuit.
For new designs, use the exact package footprint and pinout from the relevant CD4046BK datasheet rather than assuming that all CD4046 variants are interchangeable. Confirm supply-voltage limits, VCO gain, phase-comparator characteristics, output drive, and timing guarantees before substituting any part. The verified records identify distributor availability and pricing sources but do not provide a complete standardized pricing ladder or authoritative lifecycle statement.
This product data synthesizes the verified distributor descriptions, package information, pricing reference, and cross-reference-search results. It distinguishes documented facts from missing technical parameters and does not infer unverified electrical specifications, lifecycle status, or manufacturer qualification claims.
直接替換替代品，適用於 CD4046BK — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品CD4046BK 規格
| Product Type | Phase-locked-loop clock synthesizer IC |
| Maximum Operating Frequency | 2.4 MHz |
| 封裝 | 16-pin CFP flat pack |
| Logic Family | CD4000 CMOS series |
| 功能 | Phase-locked loop, clock generation, and frequency synthesis |
| Output Stages | 1 |
CD4046BK 16-pin cfp flat pack 腳位配置指南
CD4046BK（16-pin cfp flat pack 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： CD4046BK.
請參閱 資料表 以查看完整腳位配置。
典型應用
CD4046BK 適用於 6 應用s: Reference-Synchronized Clock Generation, Frequency Multiplication, Tone and Modulation Generation, Frequency-to-Voltage Conversion, Instrumentation and Test Systems, Audio and Low-Frequency Control.
Reference-Synchronized Clock Generation
The CD4046BK fits reference-synchronized clock generation because its verified phase-lock-loop architecture can compare an external reference with a feedback signal and correct the oscillator frequency. The documented 2.4 MHz maximum operating frequency provides the principal currently verified timing limit. In a practical implementation, the reference oscillator, phase comparator, loop filter, VCO, and feedback divider are selected together so the loop acquires quickly without excessive ripple. The designer must confirm supply voltage, VCO range, lock characteristics, and output loading from the exact manufacturer datasheet before finalizing values.
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Frequency Multiplication
The CD4046BK can support frequency multiplication when a divided feedback path is used to establish an integer relationship between the output oscillator and an external reference. The phase-locked-loop function is relevant when maintaining a stable ratio is more important than using a free-running oscillator. The verified data confirms a 2.4 MHz maximum operating frequency but does not specify multiplier range, lock time, or jitter. Those limitations make bench validation essential, especially in audio, test equipment, and control systems where ratio accuracy and settling time affect the result.
推薦
Tone and Modulation Generation
The CD4046BK is applicable to tone generation and low-frequency modulation systems because its PLL can regulate an oscillator relative to a reference instead of allowing large frequency drift. The verified classification as a phase lock loop IC and the 2.4 MHz operating-frequency listing make it relevant to controlled carrier or audio-frequency experiments. The external loop filter and feedback components determine bandwidth, distortion, and settling behavior, which are not specified in the supplied records. Verify waveform quality, control-voltage range, and output drive before using it in precision signal sources.
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Frequency-to-Voltage Conversion
The CD4046BK can serve as the active element in a frequency-to-voltage or closed-loop control system when an input frequency is compared with a feedback-derived oscillator frequency. The phase detector and VCO allow the loop to adjust until the reference and feedback conditions agree. The verified records do not provide the phase-comparator transfer function, input sensitivity, control-voltage range, or response bandwidth, so a production design cannot be dimensioned from the supplied information alone. Prototype the loop filter and verify linearity, capture range, and settling behavior across temperature and supply variation.
推薦
Instrumentation and Test Systems
The CD4046BK is suitable for instrumentation concepts that need a feedback-regulated oscillator rather than an uncontrolled clock. A reference oscillator can establish the target frequency, while the PLL corrects drift and phase error in the feedback loop. The verified 2.4 MHz maximum operating frequency is the only timing specification supplied, so engineers should not infer accuracy, jitter, or lock time from it. Use the device only after checking the exact datasheet, reference-noise requirements, output waveform, component tolerances, and calibration method for the intended measurement range.
推薦
Audio and Low-Frequency Control
The CD4046BK may be used in audio, musical, or low-frequency control experiments where a stable oscillator and adjustable phase relationship are useful. Its PLL architecture helps maintain the output relative to a reference, while the 2.4 MHz listing leaves substantial theoretical headroom for lower audio-band implementations. However, no verified noise, distortion, frequency accuracy, or control-voltage linearity data are available here. Confirm the datasheet, use suitable filtering, and test for audible artifacts and loop instability before production use.
推薦
推薦產品摘要
工程參考資料，適用於 CD4046BK — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Product Type | Phase-locked-loop clock synthesizer IC |
| Maximum Operating Frequency | 2.4 MHz |
| Package | 16-pin CFP flat pack |
| Brand | Harris Corporation |
| Output Stages | 1 |
| Pin Count | 16 pins |
| Phase-Lock Function | Yes |
| Reference Price | $8.5795 as of 2026-10-23 |
主要差異化特點
- Uses a phase-locked-loop architecture rather than a simple fixed oscillator (對比Basic fixed-frequency oscillator)
- Documented operating-frequency ceiling (對比CD4046BK)
- Specific package identification (對比CD4046 variants in other packages)
設計說明
The supplied data does not state the CD4046BK supply-voltage range or current consumption. Before schematic capture, identify the exact manufacturer datasheet and confirm the permitted supply, input thresholds, output levels, and load current. Do not assume that a generic CD4046 voltage range applies to every Harris, Intersil, or RCA-labeled CD4046BK. Validate the power rails against the VCO control, phase-comparator, and output-stage requirements in the selected datasheet.
Keep the feedback divider, loop-filter components, reference input, and VCO timing components close to their associated CD4046BK pins and maintain short, stable ground returns. A PLL can amplify delay, parasitic capacitance, and supply noise, particularly when the loop bandwidth is high. Use a clean ground reference, decouple the supply according to the manufacturer guidance, and isolate high-current output loads from sensitive timing nodes. The supplied data does not specify a recommended land pattern, so use the exact CFP datasheet drawing.
Do not substitute CD4046BK solely by family name or base MPN. Harris, Intersil, and RCA records appear in the verified results, but manufacturer, package revision, pinout, supply limits, and sourcing may differ. A safe replacement requires the same 16-pin CFP footprint, matching pin functions, compatible voltage and timing ranges, and verified PLL behavior. The provided cross-reference results contain search tools but no confirmed drop-in MPN, so leave the replacement decision open until manufacturer documentation is matched.
合規資訊
The supplied verified web data contains product listings and search results but does not provide standardized RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than inferred.
