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MM74HC4046 Datasheet

Part Number MM74HC4046
Manufacturers Fairchild
Logo Fairchild
Description CMOS Phase Lock Loop
Datasheet MM74HC4046 DatasheetMM74HC4046 Datasheet (PDF)

MM74HC4046 CMOS Phase Lock Loop February 1984 Revised February 1999 MM74HC4046 CMOS Phase Lock Loop General Description The MM74HC4046 is a low power phase lock loop utilizing advanced silicon-gate CMOS technology to obtain high frequency operation both in the phase comparator and VCO sections. This device contains a low power linear voltage controlled oscillator (VCO), a source follower, and three phase comparators. The three phase comparators have a common signal input and a common comparato.

  MM74HC4046   MM74HC4046






Part Number MM74HC4049
Manufacturers Fairchild
Logo Fairchild
Description Hex Inverting Logic Level Down Converter
Datasheet MM74HC4046 DatasheetMM74HC4049 Datasheet (PDF)

MM74HC4049 • MM74HC4050 Hex Inverting Logic Level Down Converter • Hex Logic Level Down Converter February 1984 Revised October 1999 MM74HC4049 • MM74HC4050 Hex Inverting Logic Level Down Converter • Hex Logic Level Down Converter General Description The MM74HC4049 and the MM74HC4050 utilize advanced silicon-gate CMOS technology, and have a modified input protection structure that enables these parts to be used as logic level translators which will convert high level logic to a low level logic.

  MM74HC4046   MM74HC4046







Part Number MM74HC4040
Manufacturers National Semiconductor
Logo National Semiconductor
Description 12-Stage Binary Counter
Datasheet MM74HC4046 DatasheetMM74HC4040 Datasheet (PDF)

MM54HC4020 MM74HC4020 14-Stage Binary Counter MM54HC4040 MM74HC4040 12-Stage Binary Counter December 1988 MM54HC4020 MM74HC4020 14-Stage Binary Counter MM54HC4040 MM74HC4040 12-Stage Binary Counter General Description The MM54HC4020 MM74HC4020 MM54HC4040 MM74HC4040 are high speed binary ripple carry counters These counters are implemented utilizing advanced silicongate CMOS technology to achieve speed performance similar to LS-TTL logic while retaining the low power and high noise immunity of .

  MM74HC4046   MM74HC4046







Part Number MM74HC4040
Manufacturers Fairchild
Logo Fairchild
Description 14-Stage Binary Counter 12-Stage Binary Counter
Datasheet MM74HC4046 DatasheetMM74HC4040 Datasheet (PDF)

MM74HC4020 • MM74HC4040 14-Stage Binary Counter • 12-Stage Binary Counter February 1984 Revised February 1999 MM74HC4020 • MM74HC4040 14-Stage Binary Counter • 12-Stage Binary Counter General Description The MM74HC4020, MM74HC4040, are high speed binary ripple carry counters. These counters are implemented utilizing advanced silicon-gate CMOS technology to achieve speed performance similar to LS-TTL logic while retaining the low power and high noise immunity of CMOS. The MM74HC4020 is a 14 sta.

  MM74HC4046   MM74HC4046







CMOS Phase Lock Loop

MM74HC4046 CMOS Phase Lock Loop February 1984 Revised February 1999 MM74HC4046 CMOS Phase Lock Loop General Description The MM74HC4046 is a low power phase lock loop utilizing advanced silicon-gate CMOS technology to obtain high frequency operation both in the phase comparator and VCO sections. This device contains a low power linear voltage controlled oscillator (VCO), a source follower, and three phase comparators. The three phase comparators have a common signal input and a common comparator input. The signal input has a self biasing amplifier allowing signals to be either capacitively coupled to the phase comparators with a small signal or directly coupled with standard input logic levels. This device is similar to the CD4046 except that the Zener diode of the metal gate CMOS device has been replaced with a third phase comparator. Phase Comparator I is an exclusive OR (XOR) gate. It provides a digital error signal that maintains a 90 phase shift between the VCO’s center frequency and the input signal (50% duty cycle input waveforms). This phase detector is more susceptible to locking onto harmonics of the input frequency than phase comparator I, but provides better noise rejection. Phase comparator III is an SR flip-flop gate. It can be used to provide the phase comparator functions and is similar to the first comparator in performance. Phase comparator II is an edge sensitive digital sequential network. Two signal outputs are provided, a comparator output and a phase p.


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