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Infineon Technologies CY23S02SXI-1T
- Part No.:
- CY23S02SXI-1T
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY23S02SXI-1T.pdf
- Description:
- IC FANOUT DIST 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,999
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Product details
Overview
CY23S02SXI-1T from Cypress Semiconductor is a Spread Aware™ zero-delay buffer and frequency multiplier IC with two LVCMOS outputs, 3.3 V/5 V dual-supply support, 20–133 MHz output frequency range, 90 ps typical jitter on OUT2, and 65 ps typical output-to-output skew. It enables precise clock distribution in spread-spectrum timing systems such as PC motherboards and embedded controllers.
For engineers reviewing the CY23S02SXI-1T datasheet, CY23S02SXI-1T pinout, CY23S02SXI-1T application, or CY23S02SXI-1T equivalent, key selection criteria include external feedback path configuration, SSFTG-compatible phase tracking, output skew tolerance, and industrial-grade (–40°C to +85°C) SOIC-8 packaging.
Technical Context
The CY23S02SXI-1T integrates a PLL-based zero-delay architecture with external feedback via FBIN, supporting configurable frequency multiplication (×2, ×4, ×8, ×16) and division (÷2) across two outputs. Its Spread Aware™ design preserves input spread-spectrum modulation without filtering, eliminating tracking skew in EMI-sensitive systems.
It features dual independent output buffers (OUT1, OUT2), where OUT2 is fixed at half the frequency of OUT1, and uses function-select pins FS0/FS1 to set multiplication ratio. Propagation delay is 90 ps typical, with phase alignment controllable by selecting which output feeds FBIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count | Two LVCMOS outputs: OUT1 (programmable frequency), OUT2 (fixed ÷2 of OUT1) |
| Frequency range | 20–133 MHz output; supports REF inputs down to 10 MHz depending on multiplication mode |
| Jitter (OUT2) | 90 ps typical cycle-to-cycle jitter - ensures tight timing margin for high-speed synchronous logic |
| Output skew | 65 ps typical OUT1–OUT2 skew - enables simultaneous clocking of tightly coupled peripherals |
| Propagation delay | 90 ps typical - minimizes insertion delay in clock tree redistribution |
| Supply voltage | 3.3 V ±5% or 5 V ±10% - supports legacy and modern logic voltage domains |
| Operating temp | –40°C to +85°C - qualified for industrial embedded and computing applications |
Pinout & Package
Package: 8-pin SOIC (150 mil), RoHS-compliant, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FBIN (Pin 1) | Feedback input | Must connect to either OUT1 or OUT2 to close PLL loop; trace length matching to destination determines zero-delay accuracy |
| IN (Pin 2) | Reference input | Primary clock source; synchronizes both outputs; accepts spread-spectrum modulated signals without degradation |
| GND (Pin 3) | Ground reference | Common return for analog/digital sections; requires low-impedance connection to system ground plane |
| FS0 (Pin 4) | Function select bit 0 | Configures multiplication ratio with FS1; logic level sets OUT1/OUT2 frequency relationship per datasheet table |
| FS1 (Pin 5) | Function select bit 1 | Paired with FS0 to select one of eight frequency modes (e.g., OUT1 = 4×REF, OUT2 = 2×REF) |
| OUT1 (Pin 6) | Primary output | Higher-frequency output; frequency determined by FS0/FS1 and FBIN source; drives clock loads up to 15 pF |
| VDD (Pin 7) | Power supply | Accepts 3.3 V or 5 V; requires 0.1 µF decoupling capacitor and optional ferrite bead for optimal jitter performance |
| OUT2 (Pin 8) | Secondary output | Fixed at half the frequency of OUT1; used for lower-speed peripherals or phase-aligned clock domains |
Key Features
| Feature | Design Value |
|---|---|
| Spread Aware™ operation | Preserves input spread-spectrum modulation to eliminate tracking skew in EMI-critical systems |
| External feedback path | Enables board-level trace-length compensation for true zero-delay clock distribution |
| Configurable frequency multiplication | Eight discrete modes via FS0/FS1, including ×2, ×4, ×8, ×16 on OUT1 and corresponding ÷2 on OUT2 |
| Phase alignment control | Connecting OUT2 to FBIN guarantees rising-edge alignment between IN and OUT2, removing startup-phase randomness |
| Industrial temperature range | Rated for –40°C to +85°C operation - suitable for fanless embedded controllers and industrial gateways |
Applications
| PC Motherboard Clock Distribution | Embedded Controller Timing |
|---|---|
Use Scenario: Distributing synchronized clocks to CPU, chipset, and peripheral controllers while meeting EMI limits. IC Role / Device Role / Timing Role: Zero-delay buffer with Spread Aware™ capability to preserve SSFTG modulation from platform controller hub. Use Value: Eliminates tracking skew-induced setup/hold violations across multi-chip clock domains under spread-spectrum operation. | Use Scenario: Providing phase-aligned clocks to ARM Cortex-M7 MCU, Ethernet PHY, and CAN transceiver in an industrial gateway. IC Role / Device Role / Timing Role: Dual-output frequency multiplier generating 100 MHz for MCU core and 50 MHz for peripheral bus from a single 25 MHz crystal oscillator. Use Value: Reduces component count vs. discrete PLL + divider solution while maintaining <65 ps inter-output skew. |
| Network Switch ASIC Synchronization | Test Equipment Clock Tree |
Use Scenario: Aligning clock edges between switch fabric ASIC and packet buffer memory in Layer-3 switches. IC Role / Device Role / Timing Role: Zero-delay buffer placed in feedback path of external clock driver to synchronize downstream ASIC outputs. Use Value: Enables sub-nanosecond edge alignment across 16+ parallel data lanes without custom PCB trace tuning. | Use Scenario: Generating multiple phase-coherent clock frequencies for mixed-signal test instrumentation with jitter-sensitive ADC/DAC sampling. IC Role / Device Role / Timing Role: Frequency multiplier providing 133 MHz main clock and 66.5 MHz auxiliary clock from stable OCXO reference. Use Value: Delivers 90 ps typical jitter on secondary output - meets ±0.5 LSB timing error budget for 16-bit, 100 MSPS converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zero-delay buffer and frequency multiplier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT 8T49N241 | Integrated crystal oscillator; programmable via I²C; higher integration but no external feedback path | Requires no external crystal; less flexible for trace-length compensation in large PCBs | Choose when system-level clock management complexity outweighs need for board-level skew tuning |
| ON Semi NB3N502 | Single-output ZDB; no frequency multiplication; lower jitter (45 ps) but fixed ×1 only | Limited to fanout-only use cases; cannot generate multiple frequencies from one reference | Choose when only clock replication (not multiplication) is required and jitter is primary constraint |
Compared with IDT 8T49N241 and ON Semi NB3N502, the CY23S02SXI-1T uniquely combines external feedback configurability, Spread Aware™ SSFTG compatibility, and dual-frequency generation in an SOIC-8 package - making it optimal for cost-sensitive, layout-flexible industrial clock trees requiring both zero-delay and multiplication.
Availability
CY23S02SXI-1T is available at Aetrix Electronics and suitable for PC motherboard clock distribution, embedded controller timing, and network switch ASIC synchronization requiring stable component supply, industrial temperature operation, and RoHS-compliant packaging.
Supply support for CY23S02SXI-1T 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-performance timing, memory, and microcontroller solutions for industrial, automotive, and computing markets.
The CY23S02 belongs to Cypress's Spread Aware™ clock buffer product line, engineered specifically to maintain spread-spectrum timing integrity while delivering zero-delay clock distribution in noise-sensitive digital systems.
FAQ
What is the purpose of the FBIN pin, and how must it be connected?
The FBIN pin closes the internal PLL feedback loop and must be connected to either OUT1 or OUT2. Trace length from FBIN to the selected output must match the trace lengths from that output to its destination loads to achieve true zero-delay operation. Incorrect routing introduces deterministic skew proportional to trace mismatch.
Can CY23S02SXI-1T operate with both 3.3 V and 5 V supplies simultaneously?
No. The device operates from a single VDD supply: either 3.3 V ±5% or 5 V ±10%. Mixing voltages is not supported. Supply selection affects current consumption (17–35 mA at 3.3 V; 31–50 mA at 5 V) and must be consistent across all pins.
How does Spread Aware™ functionality improve system-level EMI performance?
Spread Aware™ prevents internal filtering of spread-spectrum modulation on the IN signal, allowing the output clocks to retain the same frequency dither profile. This maintains EMI reduction benefits across the entire clock tree, avoiding reintroduction of narrowband spectral peaks that occur when SSFTG signals are over-filtered by conventional ZDBs.
Is CY23S02SXI-1T pin-compatible with earlier Cypress clock buffers?
Yes. It is a pin-compatible upgrade of the W42C70-01, addressing known issues including spread-spectrum tracking skew and improved jitter performance. No PCB redesign is needed for drop-in replacement, though updated FS0/FS1 configuration may be required to replicate prior behavior.
CY23S02SXI-1T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Spread Aware™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Fanout Distribution, Frequency Multiplier, Zero Delay Buffer
- PLL:
- Yes
- Input:
- LVCMOS, LVTTL
- Output:
- LVCMOS
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:2
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 133MHz
- Divider/Multiplier:
- Yes/Yes
- Voltage - Supply:
- 3.3V, 5V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
CY23S02SXI-1T FAQ
1.How can I place an order for CY23S02SXI-1T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY23S02SXI-1T 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 CY23S02SXI-1T reliable?
The price and inventory of CY23S02SXI-1T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY23S02SXI-1T is usually 5 days.
3.What payment methods are accepted for CY23S02SXI-1T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY23S02SXI-1T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY23S02SXI-1T?
CY23S02SXI-1T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY23S02SXI-1T 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 CY23S02SXI-1T?
For technical support, including CY23S02SXI-1T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY23S02SXI-1T requirements.
6.How does Aetrix verify that CY23S02SXI-1T is sourced from the original manufacturer or authorized distributors?
All CY23S02SXI-1T 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 CY23S02SXI-1T meets industry standards.
7.What is the process for return or replacement of CY23S02SXI-1T?
All CY23S02SXI-1T units undergo pre-shipment inspection (PSI). If there is an issue with CY23S02SXI-1T, 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 CY23S02SXI-1T part is unused and in its original packaging.
Return procedure for CY23S02SXI-1T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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