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HomeProductsIntegrated Circuits (ICs)Specialized ICsSN54LS629J
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SN54LS629J - Texas Instruments

Manufacturer Part Number
SN54LS629J
Manufacturer
Texas Instruments
Allelco Part Number
41D-SN54LS629J
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,960 pcs available, New & Original
Parts Description
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Data sheet
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Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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Our certification
In stock: 12960
  • Unit Price: $15.129
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $15.129 $15.13
200+ $5.855 $1,171.00
500+ $5.65 $2,825.00
1000+ $5.548 $5,548.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SN54LS629J Tech Specifications
Texas Instruments - SN54LS629J technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN54LS629J

Product Attribute Attribute Value
Part Number SN54LS629J
Package -
Description -
Stock Condition Get 12960 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Texas Instruments
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

Manufacturer Part Number

SN54LS629J

Manufacturer

Texas Instruments

Introduction

The SN54LS629J is a dual voltage-controlled oscillator (VCO) with a wide frequency range of 15MHz to 25MHz. It is designed to provide reliable timing solutions in a variety of applications, including communication systems, industrial automation, and consumer electronics.

Product Features and Performance

Dual VCO design for increased functionality

Frequency range of 15MHz to 25MHz

Operates on a supply voltage of 4.5V to 5.5V

Typical supply current of 35mA

Wide operating temperature range of -55°C to 125°C (TA)

16-pin CDIP (0.300", 7.62mm) package

Through-hole mounting

Product Advantages

Versatile dual VCO design for flexible timing solutions

Wide frequency range to accommodate diverse application requirements

Reliable operation across a wide temperature range

Compact and easy-to-integrate package

Key Reasons to Choose This Product

Proven reliability and performance from a trusted manufacturer

Flexible design allows for customization and optimization

Suitable for a wide range of applications, from communication systems to industrial automation

Cost-effective solution for timing and synchronization needs

Quality and Safety Features

Rigorous testing and quality control measures during production

Compliance with industry standards for safety and reliability

Compatibility

The SN54LS629J is compatible with various electronic systems and devices that require precise timing solutions, including:

Communication equipment

Industrial automation and control systems

Consumer electronics

Test and measurement instruments

Application Areas

Communication systems

Industrial automation and control

Consumer electronics

Test and measurement equipment

Product Lifecycle

The SN54LS629J is an active product, currently available for purchase. There are no known equivalent or alternative models available at this time. If you have any further questions or require additional information, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

What is the typical startup time for the SN54LS629J VCO when transitioning from a power-on state to a stable oscillating frequency within its specified range?
The SN54LS629J, a dual Voltage-Controlled Oscillator, generally exhibits a startup time of a few hundred nanoseconds to a couple of microseconds. This period is influenced by the slew rate of the power supply rails and the internal charge pump settling time, ensuring the output frequency locks within the 15MHz to 25MHz range under typical operating conditions of 5V and a stable control voltage.
How does the control voltage linearity of the SN54LS629J affect its suitability for precise frequency modulation applications compared to a fixed-frequency oscillator?
The SN54LS629J features a voltage-controlled mechanism where the output frequency is directly proportional to the input control voltage. For applications requiring precise frequency modulation, the linearity of this relationship is critical. Deviations from a linear transfer function, such as harmonic distortion in the control signal or non-linearities within the SN54LS629J itself, can introduce unwanted frequency sidebands or phase noise, making it less ideal than a crystal oscillator for extremely stable frequency generation but offering greater flexibility for variable frequency tasks.
What are the implications of the SN54LS629J's wide operating temperature range of -55°C to 125°C on its frequency stability and jitter performance in harsh environments?
The specified -55°C to 125°C operating temperature for the SN54LS629J indicates its robust design for extended environmental conditions. While the fundamental frequency range is maintained, internal component variations due to temperature can lead to a slight shift in the center frequency or a modest increase in phase jitter. Engineers designing with the SN54LS629J in extreme temperatures should account for potential frequency drift, typically on the order of tens to hundreds of parts per million (ppm) per degree Celsius, and consider feedback mechanisms for recalibration if sub-ppm stability is required.
Can the SN54LS629J be reliably used in systems requiring very low power consumption, considering its specified 35mA supply current?
The SN54LS629J has a nominal supply current of 35mA at a 5V supply. This current draw is moderate for a dual VCO and may be acceptable for many applications. However, for ultra-low-power designs where current budgets are exceptionally tight (e.g., battery-operated devices demanding microampere levels), the SN54LS629J might be too power-intensive. Designers would need to evaluate if this quiescent current, plus any additional current drawn by the control circuitry, fits within their overall power budget.
What is the expected phase noise performance of the SN54LS629J at offset frequencies of 1kHz and 10kHz from the carrier, and how does this compare to a ceramic resonator-based oscillator?
The SN54LS629J, being a VCO, inherently exhibits higher phase noise than a fixed-frequency oscillator like one based on a ceramic resonator. Typical phase noise for the SN54LS629J might be in the range of -90 dBc/Hz at 1kHz offset and -100 dBc/Hz at 10kHz offset. A well-designed ceramic resonator oscillator could achieve significantly lower phase noise, possibly below -110 dBc/Hz at 1kHz. This makes the SN54LS629J more suitable for applications where exact frequency is less critical than programmability, while ceramic resonators excel in applications demanding spectral purity.
What are the typical signal integrity considerations when routing control voltage and output signals for the SN54LS629J in a 16-CDIP through-hole package?
When designing with the SN54LS629J in its 16-CDIP through-hole package, signal integrity for control voltage and output signals involves careful PCB layout. Control voltage lines should be kept short and adequately bypassed to ground to minimize susceptibility to noise that could modulate the output frequency. Output traces should be impedance-controlled, ideally 50 ohms, and routed with minimal stubs to avoid reflections, especially at higher frequencies within the 15MHz to 25MHz range. Proper grounding is essential for both input and output performance of the SN54LS629J.
How does the dual-oscillator architecture of the SN54LS629J enable flexibility in system design compared to employing two separate single VCOs?
The SN54LS629J integrates two independent VCOs within a single package, sharing a common power supply and control characteristics. This dual-oscillator design offers significant advantages over using two discrete single VCOs. It reduces component count, simplifies PCB layout by consolidating two functions, and potentially offers better channel-to-channel matching and isolation between the two oscillators. This is beneficial for applications requiring two synchronized but independently controllable frequencies or for redundancy.
What are the potential limitations or trade-offs when selecting the SN54LS629J for a system requiring synchronized outputs from both VCOs, given the absence of explicit synchronization pins?
While the SN54LS629J contains two VCOs, it does not possess dedicated synchronization pins to force a phase lock between the two internal oscillators. Synchronization, if required, must be achieved externally through careful control voltage management and potentially phase-locked loop (PLL) circuitry. This means that while both VCOs in the SN54LS629J can operate independently within their 15MHz to 25MHz range, achieving precise phase alignment would necessitate additional design effort and external components.
How does the frequency range of 15MHz to 25MHz for the SN54LS629J compare to that of a typical phase-frequency detector (PFD) IC commonly used in PLLs?
The SN54LS629J operates as a voltage-controlled oscillator covering a 15MHz to 25MHz frequency band. This output frequency range is generally higher than the core operating frequencies where many phase-frequency detector (PFD) ICs are optimized. PFDs typically function effectively at much lower frequencies, often in the kilohertz or low megahertz range, to compare reference and feedback signals in a PLL. The SN54LS629J's output would likely serve as the voltage-controlled element within a PLL loop, with the PFD managing the control voltage to lock the SN54LS629J's output to a desired reference.
Considering the SN54LS629J is specified for a 5V nominal supply, how much variation in output frequency can be expected from its 15MHz-25MHz range if the supply voltage deviates by ±5% (i.e., 4.75V to 5.25V)?
The SN54LS629J is designed to operate across a 4.5V to 5.5V supply range. While the primary frequency control is via the external voltage input, supply voltage variations can have a secondary effect on the internal biasing and charge pump, potentially causing slight shifts in the output frequency. A ±5% supply variation (4.75V to 5.25V) would typically result in a frequency shift on the order of a few hundred kilohertz or less, which is generally within acceptable tolerances for most applications within the SN54LS629J's 15MHz to 25MHz specified range.

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
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Payment Support

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Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
Texas Instruments

SN54LS629J

Texas Instruments
41D-SN54LS629J

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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