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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The 74HC4046AD is a high-speed Si-gate CMOS Device and are pin compatible with the "4046" of the "4000B" series. They are specified in compliance with JEDEC standard no. 7A. The 74HC4046A is a phase-locked-loop circuits that comprise a linear voltage-controlled oscillator (VCO) and three different phase comparators (PC1, PC2 and PC3) with a common signal input amplifier and a common comparator input. The signal input can be directly coupled to large voltage signals or indirectly coupled (with a series capacitor) to small voltage signals. A self-bias input circuit keeps small voltage signals within the linear region of the input amplifiers. With a passive low-pass filter, the "4046A" forms a second-order loop PLL. The excellent VCO linearity is achieved by the use of linear op-amp techniques. The VCO requires one external capacitor C1 (between C1A and C1B) and one external resistor R1 (between R1 and GND) or two external resistors R1 and R2 (between R1 and GND and R2 and GND).
Low power consumption
Excellent VCO frequency linearity
VCO-inhibit control for ON/OFF keying and for low standby power consumption
Minimal frequency drift
Zero voltage offset due to op-amp buffering

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74HC4046AD Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	SOIC-16
Frequency	21 MHz
Supply Voltage (DC)	5.00 V, 6.00 V (max)
Supply Current	8.00 µA
Number of Circuits	1 Circuit
Number of Positions	16 Position
Duty Cycle	50 %
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage (Max)	6 V
Supply Voltage (Min)	2 V
	Show
Product Lifecycle Status	Unknown
Packaging	Each
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17

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