CD74HCT4046A - 带 VCO 的高速 CMOS 逻辑锁相环

CD74HCT4046A是TI德州仪器公司的一款锁相环(PLL)/振荡器产品，CD74HCT4046A是带 VCO 的高速 CMOS 逻辑锁相环，本站介绍了CD74HCT4046A的封装应用图解、特点和优点、功能等，并给出了与CD74HCT4046A相关的TI元器件型号供参考。

CD74HCT4046A - 带 VCO 的高速 CMOS 逻辑锁相环 - 锁相环(PLL)/振荡器 - 特殊逻辑 - 德州仪器

产品描述

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.

产品特性

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

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