CD74HC4046A High Speed CMOS Logic Phase-Locked-Loop with VCO | TI.com

CD74HC4046A (ACTIVE)

High Speed CMOS Logic Phase-Locked-Loop with VCO

High Speed CMOS Logic Phase-Locked-Loop with VCO - CD74HC4046A
 

Description

The ’HC4046A and ’HCT4046A are high-speed silicon-gate CMOS devices that are pin compatible with the CD4046B of the "4000B" series. They are specified in compliance with JEDEC standard number 7.

The ’HC4046A and ’HCT4046A are phase-locked-loop circuits that contain a linear voltage-controlled oscillator (VCO) and three different phase comparators (PC1, PC2 and PC3). A signal input and a comparator input are common to each comparator.

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.

Features

  • Operating Frequency Range
    • Up to 18MHz (Typ) at VCC = 5V
    • Minimum Center Frequency of 12MHz at VCC = 4.5V
  • Choice of Three Phase Comparators
    • EXCLUSIVE-OR
    • Edge-Triggered JK Flip-Flop
    • Edge-Triggered RS Flip-Flop
  • Excellent VCO Frequency Linearity
  • VCO-Inhibit Control for ON/OFF Keying and for Low Standby Power Consumption
  • Minimal Frequency Drift
  • Operating Power Supply Voltage Range
    • VCO Section . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 6V
    • Digital Section . . . . . . . . . . . . . . . . . . . . . . . . 2V to 6V
  • Fanout (Over Temperature Range)
    • Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
    • Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
  • Wide Operating Temperature Range . . . -55°C to 125°C
  • Balanced Propagation Delay and Transition Times
  • Significant Power Reduction Compared to LSTTL Logic ICs
  • HC Types
    • 2V to 6V Operation
    • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
  • HCT Types
    • 4.5V to 5.5V Operation
    • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
    • CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
  • Applications
    • FM Modulation and Demodulation
    • Frequency Synthesis and Multiplication
    • Frequency Discrimination
    • Tone Decoding
    • Data Synchronization and Conditioning
    • Voltage-to-Frequency Conversion
    • Motor-Speed Control

View more

Parametrics Compare all products in Phase-Locked-Loop (PLL)/Oscillator

 
Technology Family
VCC (Min) (V)
VCC (Max) (V)
Voltage (Nom) (V)
Bits (#)
F @ Nom Voltage (Max) (Mhz)
ICC @ Nom Voltage (Max) (mA)
tpd @ Nom Voltage (Max) (ns)
IOL (Max) (mA)
IOH (Max) (mA)
Operating Temperature Range (C)
Pin/Package
CD74HC4046A CD54HC4046A
HC     HC    
2     2    
6     6    
3.3
5    
3.3
5    
1     1    
70     70    
0.08     0.08    
64     64    
5.2     5.2    
-5.2     -5.2    
-55 to 125     -55 to 125    
16PDIP
16SO
16SOIC
16TSSOP    
16CDIP    

Other qualified versions of CD74HC4046A

Version Part Number Definition
Military CD54HC4046A QML certified for Military and Defense Applications