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Infineon Technologies CY25560SXCT
- Part No.:
- CY25560SXCT
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY25560SXCT.pdf
- Description:
- IC CLK/FREQ SYNTH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
CY25560SXCT from Infineon Technologies (formerly Cypress) is a spread spectrum clock generator (SSCG) IC designed to reduce electromagnetic interference in high-speed digital systems. It operates from 25 MHz to 100 MHz, supports center-spread modulation with nine selectable spread percentages (1.0%–4.3%), features tri-level logic control (S0/S1), and delivers low cycle-to-cycle jitter (≤300 ps). It is used in VGA controllers and LCD panel timing circuits to meet EMI compliance without degrading signal integrity.
For engineers reviewing the CY25560SXCT datasheet, CY25560SXCT pinout, CY25560SXCT application, or CY25560SXCT equivalent, key selection criteria include its 8-pin SOIC package, tri-level logic interface for spread programming, SSCC enable/disable function, and verified EMI reduction of 8–16 dB at fundamental and harmonic frequencies.
Technical Context
The CY25560SXCT implements a proprietary PLL-based architecture with fixed internal divider count (1166) to generate precise center-spread frequency modulation. Its modulation rate is determined solely by input frequency and this fixed divider, ensuring consistent sweep profile across the 25–100 MHz range.
It accepts either crystal (XIN/XOUT) or external clock (XIN only) inputs, provides a single modulated output (SSCLK), and uses tri-level logic on S0/S1 pins-each with defined voltage thresholds (VIL ≤0.15×VDD, VIM = 0.4–0.6×VDD, VIH ≥0.85×VDD)-to select one of nine spread configurations without external configuration memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency Range | 25 MHz to 100 MHz - supports SVGA (40 MHz), XVGA (65 MHz), and common display controller clocks. |
| Spread Modulation Type | Center-spread - symmetric frequency deviation around input frequency, minimizing duty cycle distortion. |
| Spread Selection Options | Nine discrete settings - selected via tri-level logic on S0/S1, enabling precise EMI tuning per system layout. |
| Cycle-to-Cycle Jitter | ≤300 ps (typ. 150 ps) - ensures stable timing margin for synchronous interfaces like LVDS transmitters. |
| Power Dissipation | 56 mW @ 25 MHz, 89 mW @ 65 MHz, 139 mW @ 100 MHz - enables thermal design in space-constrained PCBs. |
| Supply Voltage | 3.3 V ±10% - compatible with standard I/O voltage domains and eliminates need for level-shifting logic. |
| Output Duty Cycle | 45–55% - maintains balanced rise/fall times critical for differential clock receivers and DDR timing paths. |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), surface-mount, 150 mil width, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: XIN/CLK | Input | Accepts external clock signal or crystal oscillator input; supports 25–100 MHz fundamental frequency. |
| 2: VDD | Power | 3.3 V supply pin; decoupling capacitor required near pin for low-noise PLL operation. |
| 3: VSS | Ground | Power ground reference; must be connected to low-impedance PCB ground plane. |
| 4: SSCLK | Output | Modulated clock output with center-spread spectrum; drives downstream timing blocks directly. |
| 5: SSCC | Input | Spread spectrum enable/disable control; high = enabled, low = disabled; internally pulled high. |
| 6: S1 | Input | Tri-level logic control pin; selects spread % and frequency range with S0; internal resistor divider sets default 'M' state. |
| 7: S0 | Input | Tri-level logic control pin; pairs with S1 to define one of nine spread configurations; same internal biasing as S1. |
| 8: XOUT | Output | Crystal oscillator output; left unconnected when using external clock input on Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-level logic interface (S0/S1) | Enables nine discrete spread settings using only two pins-eliminates need for I²C/SPI configuration and reduces BOM count. |
| Center-spread modulation | Maintains 50% nominal duty cycle during frequency sweep, preserving setup/hold margins in synchronous logic. |
| SSCC enable/disable pin | Allows real-time comparison of EMI performance with/without spread-critical for pre-compliance testing and debug. |
| Fixed 1166-divider modulation engine | Guarantees deterministic modulation rate across full input frequency range-no calibration or firmware required. |
| Low-power PLL architecture | Dissipates only 56–139 mW across operating range-enables use in thermally constrained consumer displays and MFPs. |
Applications
| Desktop & Notebook PCs | VGA Controllers |
|---|---|
|
Use Scenario: Clocking GPU and display interface logic in cost-sensitive consumer PCs where EMI must pass FCC Part 15 Class B limits. IC Role / Device Role / Timing Role: Primary spread spectrum clock source for pixel clock generation and memory interface timing. Use Value: Achieves 8–16 dB peak EMI reduction without shielding or board-layer changes-reducing NRE and time-to-certification. |
Use Scenario: Driving analog RGB timing in legacy VGA signal chains where clock harmonics interfere with video DACs and analog front-ends. IC Role / Device Role / Timing Role: Low-jitter, spread-modulated pixel clock generator synchronized to horizontal/vertical sync signals. Use Value: Suppresses 65 MHz fundamental and odd harmonics (195 MHz, 325 MHz) that couple into analog video paths. |
| LCD Panels & Monitors | Printers & Multifunction Devices |
|
Use Scenario: Providing timing for LVDS or RSDS transmitter ICs in thin-bezel LCD modules where EMI radiates from narrow flex cables. IC Role / Device Role / Timing Role: High-fidelity clock source for display serial interface with controlled edge rates and minimal jitter. Use Value: Reduces radiated emissions from cable harnesses by spreading energy across 0.5–1.5% bandwidth-meeting CISPR 22 Class B. |
Use Scenario: Clocking image processing ASICs and motor control microcontrollers in compact MFP enclosures with limited metal shielding. IC Role / Device Role / Timing Role: Shared clock generator for multiple subsystems (scan engine, print head driver, UI processor). Use Value: Enables single-clock-domain architecture while meeting stringent IEC 61000-3-2 harmonic current limits. |
Equivalent & Alternatives
Two validated alternatives exist for CY25560SXCT with documented functional and application differences:
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT 8T49N241 | Programmable via I²C; supports wider spread range (±0.25%–±4.0%) and variable modulation rate; requires external EEPROM or host MCU. | Suitable for systems needing dynamic spread adjustment during operation (e.g., adaptive EMI suppression in variable-load printers). | Select when firmware-controlled modulation tuning is required; avoid if pin-count or BOM simplicity is prioritized. |
| ON Semiconductor NB3N502 | Fixed 0.5% center-spread only; no S0/S1 control; lower power (38 mW @ 65 MHz); no SSCC disable pin. | Best for cost-optimized, static-design applications (e.g., basic LCD modules) where only one spread setting suffices. | Select for lowest-cost drop-in replacement where spread flexibility is unnecessary and disable functionality is unused. |
Compared with IDT 8T49N241 and NB3N502, CY25560SXCT uniquely balances hardware-programmable spread flexibility, zero-firmware implementation, and real-time enable/disable-making it optimal for fixed-function, high-volume display timing applications requiring rapid EMI validation.
Availability
CY25560SXCT is available at Aetrix Electronics and suitable for desktop PCs, LCD monitors, and multifunction printers requiring stable component supply, long-term lifecycle support, and guaranteed traceability for industrial and commercial deployments.
Supply support for CY25560SXCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies acquired Cypress Semiconductor in 2020 and now owns and supports the CY25560 product line. Infineon is a global semiconductor leader focused on power systems, automotive, and industrial applications.
The CY25560 belongs to Infineon's Timing Solutions portfolio, engineered specifically for EMI reduction in display, computing, and peripheral subsystems-emphasizing hardware-configurable spread spectrum without software overhead.
FAQ
What is the maximum input frequency supported by CY25560SXCT?
CY25560SXCT supports an input frequency range of 25 MHz to 100 MHz. This includes common display clock frequencies such as 40 MHz (SVGA), 65 MHz (XVGA), and 100 MHz for high-resolution panels. Operation above 100 MHz is not specified and may result in undefined modulation behavior or increased jitter.
How does the tri-level logic on S0 and S1 work?
S0 and S1 each accept three voltage-defined states: Low (≤0.15×VDD), Middle (0.4–0.6×VDD), and High (≥0.85×VDD). With two pins, this yields nine combinations. Internal resistor dividers pull both pins to Middle when unconnected, providing a default spread setting-no external pull-up/down resistors are needed unless changing the default.
Can CY25560SXCT operate with a 2.5 V supply?
No. CY25560SXCT is specified only for 3.3 V ±10% (2.97–3.63 V). DC electrical characteristics-including input thresholds, output drive strength, and jitter-are characterized exclusively at 3.3 V. Operation at 2.5 V violates absolute maximum ratings and will cause functional failure or excessive jitter.
Is XOUT pin required when using an external clock input?
No. When driving Pin 1 (XIN/CLK) with an external clock signal, Pin 8 (XOUT) must be left unconnected. XOUT is active only when using a parallel-resonant crystal between Pins 1 and 8; connecting it during external clock mode may load the input and degrade signal integrity or cause oscillation instability.
CY25560SXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Clock/Frequency Synthesizer, Frequency Modulator, Spread Spectrum Clock Generator
- PLL:
- Yes
- Input:
- Clock, Crystal
- Output:
- Clock
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:1
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 100MHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 2.97V ~ 3.63V
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
CY25560SXCT FAQ
1.How can I place an order for CY25560SXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY25560SXCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY25560SXCT reliable?
The price and inventory of CY25560SXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY25560SXCT is usually 5 days.
3.What payment methods are accepted for CY25560SXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY25560SXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY25560SXCT?
CY25560SXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY25560SXCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY25560SXCT?
For technical support, including CY25560SXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY25560SXCT requirements.
6.How does Aetrix verify that CY25560SXCT is sourced from the original manufacturer or authorized distributors?
All CY25560SXCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY25560SXCT meets industry standards.
7.What is the process for return or replacement of CY25560SXCT?
All CY25560SXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY25560SXCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY25560SXCT part is unused and in its original packaging.
Return procedure for CY25560SXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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