CD4046BF Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
Texas Instruments CD4046BF is a CMOS phase-locked loop (PLL) IC operating from 3 V to 18 V with an on-chip VCO, phase comparators, and source follower in a 16-pin ceramic DIP package. It supports frequencies from DC to several MHz and is suited for frequency synthesis and demodulation. Available in stock worldwide with fast shipping from authorized distributors.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD4046BF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide 3 V to 18 V supply range covers both low-voltage and high-voltage logic systems without redesign
- On-chip VCO with linear voltage-to-frequency conversion enables precise frequency synthesis and FM demodulation in a single 16-pin package
- Two independent phase comparators (XOR and edge-triggered) allow designers to choose lock-in speed versus noise immunity tradeoffs for specific PLL filter designs
Applications
The CD4046BF is used in frequency synthesizers, FM demodulators, and motor speed control circuits that require a stable voltage-controlled oscillator and phase comparator in a single ceramic-packaged IC. Its 3 V to 18 V operating range makes it compatible with both TTL and CMOS logic families in legacy industrial instrumentation and communication systems. Engineers also deploy it in clock recovery circuits, FSK demodulators, and tone-detection circuits for telecom and audio signal processing.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | PHASE LOCKED LOOP |
| JESD-30 Code | R-CDIP-T16 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 4mA |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 10V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## CD4046BF Alternates Showing results | Image |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4046BF:
Frequently Asked Questions
What supply voltage range does the CD4046BF support, and why does that matter for legacy designs?
The CD4046BF operates from 3 V to 18 V, making it compatible with 5 V TTL, 12 V industrial logic, and 15 V analog CMOS systems within a single ceramic DIP-16 package, allowing reuse across diverse legacy and modern board designs without voltage regulator changes.
What are the two phase comparator types in CD4046BF, and when would each be preferred?
The CD4046BF includes a Type I XOR phase comparator for fast lock-in with minimal phase error and a Type II edge-triggered comparator that tracks phase and frequency simultaneously, with the Type II preferred for FM demodulation and frequency synthesis applications requiring zero steady-state phase error.
How does the VCO in CD4046BF enable FM demodulation in a communication receiver?
The on-chip VCO produces a linear voltage-to-frequency output whose capture range is set by external RC components, allowing the PLL to track a modulated carrier and produce the demodulated baseband signal directly at the VCO input pin without additional mixer or discriminator stages.
In which frequency range does the CD4046BF VCO operate, and what sets its limits?
The VCO operates from DC (0 Hz) up to several MHz, with the exact upper frequency limit determined by external resistors R1/R2 and capacitor C1; at a 15 V supply, typical maximum frequencies of 1 MHz to 3 MHz are achievable, making it suitable for audio, FSK modem, and low-speed clock recovery applications.
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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.
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