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 to 125
• 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, Il1µA at VOL, VOH
Application• FM Modulation and Demodulation
• Frequency Synthesis and Multiplication
• Frequency Discrimination
• Tone Decoding
• Data Synchronization and Conditioning
• Voltage-to-Frequency Conversion
• Motor-Speed ControlPinout
SpecificationsDC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . .-0.5V to 7V
DC Input Diode Current, IIK
For VI<-0.5V or VI> VCC+0.5V. . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO<-0.5V or VO>VCC+0.5V . . . . . . . . . . . . . . . . . . .±20mA
DC Drain Current, per Output, IO
For -0.5V < VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . .±25MA
DC Output Source or Sink Current per Output Pin, IO
For VO>-0.5V or VO< VCC+ 0.5V. . . . . . . . . . . . . . . . . . ±25mA
DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . ±50mA
DescriptionThe '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.
CD74HCT4046A 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.
CD74HCT4046A Data Sheet
