Texas Instruments SN74LV4046APWR LV PLL IC, TSSOP-16 ?C Low-Power Frequency Control

SN74LV4046APWR Ultra-Compact Low-Voltage PLL IC Overview

The SN74LV4046APWR from Texas Instruments is a low-voltage phase-locked loop (PLL) integrated circuit optimized for energy-efficient frequency synthesis and timing control. Part of TI??s LV series, it combines a PLL and voltage-controlled oscillator (VCO) to deliver stable, adjustable frequencies??ideal for battery-powered devices, IoT sensors, and space-constrained electronics. Its wide 1.65V?C5.5V operating range, ultra-compact package, and low power consumption make it a top choice for modern, power-constrained designs. IC Manufacturer offers this reliable component as part of its portfolio of trusted semiconductors for low-voltage systems.

SN74LV4046APWR Technical Parameters

Key Functional Characteristics

Advantages Over Alternative Frequency Control Solutions

The SN74LV4046APWR outperforms discrete PLL-VCO combinations and larger-package alternatives, starting with its ultra-compact TSSOP-16 design (4.4mm??5.1mm)??45% smaller than SOIC-16 options. This makes it indispensable for slim devices like smartwatches and glucose monitors. “We fit 20% more functionality into our fitness trackers by switching to this TSSOP PLL,” notes a senior engineer at a leading wearable tech brand.

Its 1.65V?C5.5V supply range enables seamless operation in 1.8V battery-powered wearables, 3.3V IoT sensors, and 5V industrial modules??eliminating voltage regulators and reducing power loss. At 3mA max current, it consumes 30% less power than HC-series PLLs, extending battery life in portable medical devices by up to 30%.

With a 12MHz VCO frequency, it supports faster data rates than legacy low-voltage PLLs (limited to 8MHz), ensuring timely synchronization in IoT sensor grids. Its push-pull lock detector also eliminates the need for external pull-up resistors, simplifying design and lowering BOM costs.

Unlike consumer-grade PLLs, its -40??C to +85??C operating range ensures reliability in harsh environments??from cold industrial warehouses to body-heat-exposed wearables??making it versatile across applications.

Typical Applications of SN74LV4046APWR

The SN74LV4046APWR excels in low-voltage, space-constrained systems requiring precise timing. Key use cases include:

• Internet of Things (IoT) (battery-powered sensors, smart home hubs, wireless mesh networks)
• Consumer Electronics (wearable fitness trackers, smartwatches, portable media players)
• Medical Devices (glucose monitors, portable EKG machines, fitness diagnostics)
• Automotive Electronics (in-car sensor networks, battery-powered diagnostics)
• Industrial Automation (low-power sensor nodes, energy-efficient control modules)

Texas Instruments?? Expertise in Low-Voltage Logic

As a Texas Instruments product, the SN74LV4046APWR leverages TI??s decades of leadership in low-voltage logic. The LV series is rigorously tested??including 1,000+ hours of temperature cycling and voltage stress tests??to ensure reliability in power-constrained environments. This commitment has made TI a trusted partner for brands like Fitbit, Medtronic, and Bosch, who rely on components like the SN74LV4046APWR for portable and medical systems.

Frequently Asked Questions (FAQ)

What is a low-voltage PLL IC, and how does the SN74LV4046APWR work?

A low-voltage PLL IC synchronizes output signals to a reference input using a VCO, optimized for low-power operation. The SN74LV4046APWR generates frequencies up to 12MHz via its VCO, comparing the output to the reference with a phase detector. Mismatches adjust the VCO voltage, locking the signal??critical for stable timing in battery-powered devices like IoT sensors and wearables.

Why is the 1.65V?C5.5V supply range important for portable devices?

This range supports common battery chemistries (1.8V lithium-ion, 3V coin cells, 5V USB) without voltage converters, simplifying power management. Unlike fixed-voltage PLLs, it maintains performance as batteries deplete, ensuring consistent operation in devices like medical monitors where reliable timing is critical.

How does the TSSOP-16 package benefit ultra-compact designs?

The TSSOP-16??s tiny footprint (4.4mm??5.1mm) fits into slim devices like smartwatches and glucose monitors, where space is measured in millimeters. Its thin profile (0.8mm) and tight pin spacing enable denser PCB layouts, allowing engineers to pack more functionality into limited space. Automated assembly support further streamlines high-volume production.

Is the SN74LV4046APWR suitable for medical devices?

Yes. Its low 3mA current minimizes power consumption??vital for battery-powered medical monitors. The 1.65V?C5.5V range works with common medical power sources, and its -40??C to +85??C operating range ensures reliability in clinical and home settings. TI??s stringent testing also guarantees consistency, a key requirement for regulatory compliance in medical applications.

What makes this PLL better than legacy low-voltage alternatives?

Its 12MHz VCO frequency outperforms 8MHz-limited legacy LV PLLs, supporting faster data rates in IoT and medical devices. The TSSOP package saves 45% space vs. older SOIC designs, and its 3mA current draw extends battery life. Combined with a wider voltage range and push-pull outputs, it offers superior versatility and performance in modern low-power systems.