CD74HC4046APWRE4

Overview

The CD74HC4046APWRE4 is a high-speed CMOS logic phase-locked loop (PLL) integrated circuit manufactured by Texas Instruments. It integrates a voltage-controlled oscillator (VCO) and three distinct phase comparators within a single circuit configuration. The device operates on a supply voltage ranging from 2 V to 6 V and supports maximum input frequencies up to 38 MHz. It is housed in a 16-pin Thin-Shrink Small Outline Package (TSSOP) designed for surface-mount technology applications. The component functions reliably across an extended temperature range, supporting operation from -55 °C to +125 °C.

Feature Summary

• Integrates a linear voltage-controlled oscillator with high linearity achieved through operational amplifier techniques.
• Includes three selectable phase comparators allowing flexible loop filter configurations.
• Features self-biasing input circuits to maintain small voltage signals within the linear region of the input amplifier.

Applications

• Frequency synthesis systems
• Clock recovery circuits
• FM demodulation

Procurement Notes

Verify the E4 suffix indicates lead-free construction compliant with RoHS standards. Confirm the TSSOP-16 package dimensions match the design footprint. Ensure the operating environment stays within the specified -55 °C to +125 °C temperature range. Validate that the 2 V to 6 V supply voltage aligns with the system power rails.

Selection Notes

Select this component when a complete PLL solution with multiple comparator options is required in a compact surface-mount package. Compare against the CD74HC4046APWR if lead-free certification is not mandatory. Consider the CD74HCT4046 series if 5 V logic compatibility is strictly necessary, as the HC variant supports wider voltage ranges.

Part Context

This part belongs to the CD74HC4046A family of high-speed silicon-gate CMOS devices. It maintains pin compatibility with the older CD4046B series while offering improved switching speeds. The E4 suffix specifically denotes a lead-free finish, distinguishing it from standard commercial variants while retaining identical electrical performance characteristics.

Replacement Considerations

The CD74HC4046APWR is the non-lead-free equivalent. The CD74HC4046AM96 offers a SOIC package alternative. Verify pinout compatibility before substituting with other PLL ICs from different manufacturers.