MC14046BFL2

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC14046BFL2 is a Phase Locked Loop (PLL) integrated circuit manufactured by onsemi, originally part of the Motorola product line. It is housed in a 16-lead Small Outline Integrated Circuit (SOIC) package with a 7.5mm body width. The device operates within a supply voltage range of 3.0 V to 18 V and supports an operating temperature range from -55 °C to +125 °C. Internally, it integrates two phase comparators, a voltage-controlled oscillator (VCO), a source follower, and a zener diode. The component utilizes Silicon technology and is designed for surface-mount installation.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrated dual phase comparators: Comparator 1 functions as an exclusive OR gate providing digital error signals with 90° phase shift at center frequency; Comparator 2 uses leading edge sensing logic for 0° phase shift.
• Voltage-Controlled Oscillator (VCO): Produces an output signal whose frequency is determined by the input voltage and external resistor/capacitor components connected to specific pins.
• Source Follower Output: Provides an isolated output for the VCO control voltage to prevent loading effects when the VCOin signal is required elsewhere.
• Inhibit Input: A dedicated pin that disables the VCO and source follower when held high, minimizing standby power consumption.

Clock Generators, PLLs, Frequency Synthesizers Applications

• FM and FSK modulation and demodulation circuits
• Frequency synthesis and multiplication systems
• Tone decoding and data synchronization conditioning
• Voltage-to-frequency conversion applications

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MC14046BFL2 belongs to the MC14046 family of CMOS PLL devices. The 'FL' suffix indicates the SOIC-16 surface mount package variant, while the 'L2' typically denotes specific tape-and-reel packaging or manufacturing lot codes. This component serves as a pin-for-pin replacement for legacy CD4046 series devices, maintaining compatibility with MHTL and Low-Power TTL logic families through buffered outputs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility with CD4046 equivalents if cross-referencing older datasheets, but no direct manufacturer-confirmed alternate part numbers are listed.