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CD54HCT4046AF3A
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Product Detailed Parameters
- Description：HIGH SPEED CMOS LOGIC PHASE-LOCK
- Series：54HCT
- Package：Tube
- Mfr：Texas Instruments
- PLL：Yes
- Input：CMOS
- Output：CMOS
- Number of Circuits：1
- Ratio - Input:Output：1:04
- Differential - Input:Output：No/No
- Frequency - Max：38MHz
- Divider/Multiplier：No/No
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：16-CDIP (0.300", 7.62mm)
- Supplier Device Package：16-CDIP
- Type：Phase Lock Loop (PLL)
- Grade：-
- Qualification：-
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Overview
The CD54HCT4046AF3A is a high-speed silicon-gate CMOS phase-locked loop (PLL) circuit manufactured by Texas Instruments. It integrates a linear voltage-controlled oscillator (VCO) and three distinct phase comparators: an Exclusive-OR network, an edge-triggered JK flip-flop, and an edge-triggered RS flip-flop. The device operates within a supply voltage range of 4.5V to 5.5V for the digital section and 3V to 6V for the VCO section. It supports operating frequencies up to 18MHz at VCC = 5V and functions across a temperature range of -55°C to 125°C. The component is housed in a 16-lead ceramic dual-in-line package (CERDIP).
Feature Summary
- Integrates a linear voltage-controlled oscillator with excellent frequency linearity.
- Provides three selectable phase comparators: Exclusive-OR, JK flip-flop, and RS flip-flop.
- Includes VCO-inhibit control for ON/OFF keying and low standby power consumption.
- Features direct LSTTL input logic compatibility with minimal frequency drift.
Applications
- FM Modulation and Demodulation
- Frequency Synthesis and Multiplication
- Tone Decoding
- Data Synchronization and Conditioning
Procurement Notes
Verify the complete part number including the F3A suffix when ordering to ensure correct packaging. Confirm that the 16-lead CERDIP package meets mechanical requirements. Check datasheet specifications for electrostatic discharge sensitivity and proper handling procedures during assembly.
Selection Notes
Select this HCT variant for applications requiring direct LSTTL input compatibility. Ensure the supply voltage remains within the 4.5V to 5.5V range for optimal performance. Consider the HC version if a wider 2V to 6V supply range is required instead.
Part Context
This component belongs to the CD54/CD74HC(H)T4046A family of high-speed CMOS PLLs. It is pin-compatible with the older CD4046B from the 4000B series but offers significantly reduced power dissipation compared to LSTTL logic ICs. The device complies with JEDEC standard number 7.
Replacement Considerations
CD54HC4046AF3A
FAQ
What are the three types of phase comparators available?
The device includes an Exclusive-OR network (PC1), an edge-triggered JK flip-flop (PC2), and an edge-triggered RS flip-flop (PC3).
How does the VCO-inhibit control function?
A HIGH level at the inhibit input turns off the VCO and demodulator to minimize standby power consumption, while a LOW level enables them.
What is the maximum operating frequency specified?
The typical operating frequency range is up to 18MHz at VCC = 5V.
