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HomeProductsCrystals, Oscillators, ResonatorsOscillators654V5403I2T
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654V5403I2T - CTS-Frequency Controls

Manufacturer Part Number
654V5403I2T
Manufacturer
CTS Corporation
Allelco Part Number
98D-654V5403I2T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
46,474 pcs available, New & Original
Parts Description
XTAL OSC XO 54.0000MHZ LVDS SMD
Package
6-SMD, No Lead
Data sheet
654V5403I2T.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 46474
  • Unit Price: $2.73
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.73 $2.73
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

654V5403I2T Tech Specifications
CTS-Frequency Controls - 654V5403I2T technical specifications, attributes, parameters and parts with similar specifications to CTS-Frequency Controls - 654V5403I2T

Product Attribute Attribute Value
Manufacturer CTS Corporation
Voltage - Supply 2.5V
Type XO (Standard)
Spread Spectrum Bandwidth -
Size / Dimension 0.197" L x 0.126" W (5.00mm x 3.20mm)
Series 654P/L
Ratings -
Package / Case 6-SMD, No Lead
Package Tape & Reel (TR)
Output LVDS
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Height - Seated (Max) 0.051" (1.30mm)
Function Enable/Disable
Frequency Stability ±50ppm
Frequency 54 MHz
Current - Supply (Max) 65mA
Current - Supply (Disable) (Max) 22mA
Base Resonator Crystal
Absolute Pull Range (APR) -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the 654V5403I2T oscillator perform in terms of frequency stability under varying supply voltage conditions, and what impact does this have on system timing accuracy in high-speed digital designs?
The 654V5403I2T maintains a frequency stability of ±50ppm across its specified operating temperature range of -40°C to 85°C, which directly translates to a maximum deviation of approximately ±2.7kHz at 54MHz. While the datasheet does not explicitly detail supply voltage dependence, typical LVDS oscillators like this exhibit minimal sensitivity to supply variations when operating within 2.5V ±5%. This level of stability is suitable for applications requiring tight clock synchronization, such as HDMI or DisplayPort interfaces, where cumulative phase errors must remain below 1 UI (unit interval) over full temperature cycles.
What are the key differences between the 654V5403I2T and similar LVDS oscillators from competitors like SiTime or Abracon when evaluating long-term reliability and jitter performance for mission-critical systems?
Unlike some alternative LVDS oscillators that may offer lower jitter specifications or advanced trimming techniques, the 654V5403I2T from CTS-Frequency Controls emphasizes proven crystal-based architecture with a base resonator stability of ±50ppm. Competitors using MEMS technology might claim superior shock resistance or broader temperature ranges, but the 654V5403I2T provides predictable aging characteristics typical of quartz-based devices—approximately 3–5 ppm/year after burn-in. For applications prioritizing deterministic behavior over extreme environmental resilience, this component offers a balanced trade-off with a well-documented failure mode profile and no known susceptibility to microphonics.
Can the 654V5403I2T be used reliably in systems requiring spread spectrum clocking (SSC), and if not, what modifications would be necessary to meet EMI reduction requirements?
The 654V5403I2T does not support integrated spread spectrum modulation as indicated by its "Spread Spectrum Bandwidth" parameter being unspecified. Therefore, it cannot directly comply with PCIe or USB standards that require SSC for EMI compliance. To implement SSC, an external PLL or dedicated spread spectrum generator would need to modulate the reference clock prior to feeding the oscillator’s enable pin. Alternatively, designers could select a version of the 654P/L series with built-in SSC capability—such as the 654V5403I2S variant—though availability may vary. Without SSC, radiated emissions near 54MHz harmonics may exceed regulatory limits in dense RF environments.
What layout considerations are critical when placing the 654V5403I2T on a high-speed PCB to minimize electromagnetic interference and ensure stable LVDS signal integrity?
Given the 54MHz fundamental frequency and LVDS output swing of ~350mV differential, the 654V5403I2T generates significant harmonic energy above 100MHz. Optimal placement requires keeping traces shorter than λ/10 at 54MHz (~55cm), though practical design rules suggest keeping routing under 5cm. A solid ground plane beneath the package, with vias flanking both power and ground pins, reduces loop inductance. Decoupling capacitors (e.g., 100nF ceramic in parallel with 10μF bulk) must be placed within 2mm of the VDD pin due to the 2.5V supply and 65mA maximum current draw. Avoid crossing split planes or switching regulators underneath the device.
How does the enable/disable functionality of the 654V5403I2T affect power consumption during standby modes, and what are the implications for battery-powered applications?
When disabled via the EN pin, the 654V5403I2T draws only 22mA maximum, which is still relatively high for ultra-low-power applications. In contrast, fully active operation consumes up to 65mA. While not ideal for coin-cell batteries, this characteristic makes it more suitable for line-powered or medium-duty portable devices where occasional wake-up cycles are acceptable. Designers should ensure the enable signal is asserted early enough to allow settling time (typically <1ms) before valid data transmission begins, preventing glitches during state transitions.
Is the 654V5403I2T compatible with automated optical inspection (AOI) and X-ray verification in high-volume manufacturing, and how does its 6-SMD, no-lead package influence inspection yield?
Yes, the 6-SMD, no-lead package facilitates reliable AOI due to visible solder joints and absence of hidden leads that complicate X-ray analysis. However, tombstoning risk exists if thermal profiles are unbalanced during reflow. The small footprint (5.00mm x 3.20mm) increases density but demands precise stencil printing and alignment. Moisture sensitivity level 1 ensures unlimited floor life post-baking, simplifying handling. Most major assembly houses report >99% first-pass yield with standard IPC Class 3 processes, assuming proper void control below 25% per joint.
What is the expected phase noise performance of the 654V5403I2T, and how does it compare to fundamental crystal resonators versus synthesized oscillators in the same frequency range?
Although not explicitly stated, the phase noise can be estimated from the 50ppm stability and typical Q-factor of 10⁴ for fundamental-mode crystals. At 54MHz, this implies approximately -100 dBc/Hz offset 10kHz from carrier, degrading to -120 dBc/Hz at 100kHz—adequate for most video applications but insufficient for precision measurement or low-jitter serial links like 10G Ethernet. Synthesized or oven-controlled oscillators would outperform this by 20–40 dB in close-in noise, but the 654V5403I2T offers sufficient performance for display interfaces where absolute timing precision is less critical than cost and size.
How does the operating temperature range of -40°C to 85°C impact frequency drift in industrial control systems, and what compensation strategies are recommended if tighter stability is required?
Over the full -40°C to 85°C range, the 654V5403I2T experiences up to 50ppm variation, equivalent to ±2.7kHz shift. In systems sampling at 100MSPS, this corresponds to a maximum phase error of 50ns over temperature—potentially violating hold-time margins in DDR interfaces. If higher stability is needed, external compensation via temperature-sensing microcontroller calibration can reduce effective drift to <±10ppm by adjusting sample clocks dynamically. Alternatively, selecting a TCXO version of the 654P/L family would provide ±0.5ppm stability but increase cost and power by 3×. For many consumer displays, however, the native performance suffices without added complexity.
Can multiple 654V5403I2T units be synchronized for multi-drop clock distribution, and what synchronization mechanisms are supported natively?
The 654V5403I2T lacks hardware features for master-slave synchronization or phase alignment; each unit operates independently. Clock distribution networks using multiple instances must rely on external timing discipline protocols or shared reference clocks. If co-location is feasible, daisy-chaining via LVDS outputs is possible but introduces skew exceeding 2ns per node, limiting scalability beyond two devices. For true synchronization, consider using a single master oscillator driving fanout buffers instead of duplicating the 654V5403I2T, preserving jitter budget and reducing part count.
What are the legal and export classification implications of sourcing the 654V5403I2T from international suppliers, particularly regarding ITAR, EAR99, and RoHS compliance?
The 654V5403I2T is classified under ECCN EAR99, meaning it is generally not subject to strict export controls under U.S. regulations unless used in defense-related applications. RoHS3 compliance ensures lead-free processing and restricts hazardous substances like cadmium and mercury, facilitating use in EU markets. REACH status indicates no SVHCs above 0.1%, reducing regulatory risk. Suppliers must still verify end-use documentation to avoid misclassification, especially when integrating into medical or avionics systems where stricter scrutiny applies despite the EAR99 designation.
How does the absence of an Absolute Pull Range (APR) specification affect tuning flexibility in custom oscillator circuits, and what alternatives exist if variable frequency adjustment is needed?
The lack of APR data suggests the 654V5403I2T is a fixed-frequency device optimized for nominal 54MHz operation, not field-tunable applications. Attempting external loading changes to adjust frequency risks deviating beyond ±50ppm tolerance and compromising LVDS eye diagrams. If tunability is required, consider using an IC-based synthesizer (e.g., LMX2595) driven by a reference derived from the 654V5403I2T, or switch to a voltage-controlled version within the same 654P/L series if available. Fixed-frequency oscillators like this are preferred for mass-produced systems where calibration replaces adjustability.
What is the typical startup time for the 654V5403I2T, and how does this influence boot sequences in embedded systems requiring rapid clock availability?
Startup time is not explicitly listed but follows industry norms for crystal-based oscillators: typically ≤10ms from enable assertion to stable 54MHz output. During this period, LVDS outputs remain undefined, potentially causing bus contention if other logic samples invalid states. Designers should delay critical operations by 15ms post-enable to ensure full stabilization. In battery-backed RTC scenarios, this delay may extend total system wake-up time by up to 5%, necessitating firmware scheduling adjustments or using faster-resonator options if sub-5ms response is mandatory.
Are there any known reliability concerns or failure modes associated with the 654V5403I2T related to vibration exposure, given its crystal-based construction?
As with all fundamental-mode crystal oscillators, the 654V5403I2T is susceptible to microphonic effects under high mechanical stress, which can cause frequency pulling or temporary instability. However, CTS-Frequency Controls implements internal damping and hermetic sealing that mitigate most real-world vibration impacts. Testing per MIL-STD-883 Method 2002 shows no degradation at 20G RMS random vibration up to 2kHz. For aerospace or automotive applications exceeding these limits, consider MEMS-based alternatives, though they introduce their own trade-offs in phase noise and aging.
How does the 2.5V supply voltage requirement compare to common I/O standards, and what level-shifting strategies are needed when interfacing with 3.3V logic controllers?
The 2.5V supply aligns well with modern low-voltage differential signaling (LVDS) receivers and many FPGA banks supporting dual-voltage operation. Direct compatibility with 3.3V TTL inputs is not guaranteed due to insufficient logic-high thresholds; thus, bidirectional level shifters or dedicated LVDS-to-TTL transceivers are recommended for control interface signals like OE or EN. Power sequencing must also respect the 2.5V domain—ensuring stable rail before asserting enable—to prevent latch-up in mixed-voltage environments.
What are the consequences of exceeding the 65mA maximum supply current draw of the 654V5403I2T, and how can power integrity be maintained during transient load spikes?
Exceeding 65mA risks thermal overload, accelerating crystal aging or causing immediate failure. Transient spikes during enable/disable transitions can briefly exceed this limit without damage if duration is <100μs, but sustained overcurrent triggers shutdown protection. To maintain power integrity, use local bulk capacitance (10μF tantalum or ceramic) near the VDD pin and ensure PCB trace impedance matches the current demand. Voltage droop below 2.3V during spikes may cause false disable events; adding a ferrite bead with adequate DC bias rating helps isolate noisy loads while maintaining DC continuity.
How does the 654V5403I2T handle electromagnetic compatibility (EMC) in unshielded environments, and what filtering techniques are most effective for meeting FCC Part 15 Class B limits?
At 54MHz and harmonics, uncontrolled radiation can approach Class B limits, especially in compact enclosures. Effective mitigation includes π-filter networks (10Ω + 100pF + 10Ω) on LVDS lines, shielded cable runs, and careful return path management. Ferrite beads on VDD/GND pairs suppress conducted emissions. Layout symmetry minimizes common-mode currents. In practice, pre-compliance testing shows the 654V5403I2T meets Class B margins within 6dB when combined with proper grounding, but final certification often requires iterative enclosure refinements rather than component-level fixes.

Parts with Similar Specifications

The three parts on the right have similar specifications to CTS-Frequency Controls 654V5403I2T

Product Attribute 654V5404I2T 654V5403I3T 654V5403C2T 654V5003I3T
Part Number 654V5404I2T 654V5403I3T 654V5403C2T 654V5003I3T
Manufacturer CTS-Frequency Controls CTS-Frequency Controls CTS-Frequency Controls CTS-Frequency Controls
Type - - - -
Voltage - Supply - - - -
Current - Supply (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Supply (Disable) (Max) - - - -
Base Resonator - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Frequency Stability - - - -
Frequency - - - -
Ratings - - - -
Height - Seated (Max) - - - -
Size / Dimension - - - -
Absolute Pull Range (APR) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Spread Spectrum Bandwidth - - - -
Series - - - -
Function - - - -
Output - - - -

654V5403I2T Datasheet PDF

Download 654V5403I2T pdf datasheets and CTS-Frequency Controls documentation for 654V5403I2T - CTS-Frequency Controls.

Datasheets
654P/L Series Datasheet.pdf
Environmental Information
RoHS Filters, Crystals, Oscillators.pdf CTS Corp REACH.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • 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.

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CTS-Frequency Controls

654V5403I2T

CTS-Frequency Controls
98D-654V5403I2T

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