CD74HC4046AE

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CD74HC4046AE

High Speed CMOS Logic Phase-Locked-Loop with VCO

Packaging

Package | PIN: N | 16
Temp: M (-55 to 125)
Carrier: Partial Tube
Qty Price
1-9 $0.61
10-24 $0.54
25-99 $0.49
100-249 $0.42
250-499 $0.38
500-749 $0.29
750-999 $0.22
1000+ $0.19

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

Texas Instruments  CD74HC4046AE

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.