Infineon Technologies CY25701FLXCT

Overview

CY25701FLXCT from Infineon Technologies / Cypress is a programmable high-frequency crystal oscillator with spread spectrum clock output and no-spread XO option. It is designed for systems that need EMI reduction, a programmable output clock, compact 4-pin ceramic LCC packaging, and simple 3.3 V oscillator integration.

As a field-programmable CY25701 part, CY25701FLXCT supports a 10 MHz to 166 MHz SSCLK output range, center-spread and down-spread programming, output-enable control, and tape-and-reel assembly in a 4-pin ceramic LCC SMD package. For engineers reviewing the CY25701FLXCT datasheet, CY25701FLXCT pinout, CY25701FLXCT application, or CY25701FLXCT equivalent, this device is mainly relevant to PC, consumer, networking, embedded control, and EMI-sensitive clock-generation designs.

Technical Context

In a clocking system, CY25701FLXCT acts as an integrated spread spectrum crystal oscillator. The device uses an internal crystal oscillator, Cypress PLL technology, programmable configuration memory, and an output divider to synthesize the SSCLK output.

Frequency modulation spreads the clock energy around the nominal frequency to reduce narrowband EMI peaks at the fundamental and harmonic frequencies. The CY25701 family can be programmed for center spread from ±0.25% to ±2.0%, down spread from -0.5% to -4.0%, or no-spread operation.

CY25701FLXCT is the commercial tape-and-reel field-programmable option in the CY25701 family. The exact clock frequency and spread configuration should be verified against the programmed data or production programming record.

Key Specifications

Pinout & Package

The CY25701FLXCT pinout uses a 4-pin ceramic SMD package with OE, VSS, SSCLK, and VDD pins. The clock output and power pins should be routed with short paths, local bypass capacitance, and clean reference return to reduce supply noise and output jitter.

For PCB design, the 0.1 µF decoupling capacitor should be placed close to VDD and VSS. The SSCLK output should be routed according to the receiving device input requirements and the board-level EMI target.

Key Features

• Programmable crystal oscillator with spread spectrum and no-spread XO operation.
• 10 MHz to 166 MHz output clock range.
• Center-spread, down-spread, and no-spread configuration options.
• 31.5 kHz nominal modulation frequency for spread-spectrum operation.
• Integrated PLL and output divider.
• 3.3 V operation from a 3.0 V to 3.6 V supply range.
• Active-high output enable function.
• 4-pin ceramic LCC SMD package.
• Commercial 0°C to 70°C product flow for CY25701FLXCT.
• Tape-and-reel packing for SMT production.

Applications

Equivalent & Alternatives

When evaluating CY25701FLXCT equivalent devices, engineers should compare output frequency range, spread-spectrum capability, programming flow, supply voltage, package, pinout, jitter, temperature grade, and output-enable behavior.

Compared with fixed-frequency oscillators, CY25701FLXCT is selected when spread-spectrum programming and EMI reduction are required. A substitute should not be chosen only by frequency; the programmed spread profile, output type, package, and qualification flow must also match.

Quality

CY25701FLXCT should be sourced as original Infineon / Cypress components through traceable and controlled supply channels. Quality checks may include reel-label inspection, package review, date-code review, marking verification, solderability assessment, and confirmation of the programmed oscillator configuration.

Because CY25701 devices can be programmed for different output frequencies and spread profiles, production control should verify that the delivered parts match the intended configuration.

Availability

CY25701FLXCT available at Aetrix Electronics and suitable for spread-spectrum clock generation, EMI reduction, programmable oscillator replacement, and commercial-temperature embedded timing applications requiring stable component supply and traceable sourcing support.

Supply support may include scheduled delivery planning, programmed-part review, BOM continuity assistance, tape-and-reel sourcing, and long-term availability support for OEM manufacturers, EMS providers, and embedded hardware developers.

For production deployment, confirming programmed frequency, spread percentage, package, commercial temperature flow, tape-and-reel format, and supply continuity helps reduce procurement and manufacturing risk.

Manufacturer

Infineon Technologies supplies semiconductor products including power devices, microcontrollers, sensors, security ICs, timing products inherited from Cypress, and embedded system solutions for automotive, industrial, communication, computing, and consumer applications.

The CY25701 family originated from Cypress timing products and provides programmable spread-spectrum oscillator capability for EMI-sensitive systems. CY25701FLXCT belongs to this family as a field-programmable 4-pin ceramic LCC tape-and-reel option.

FAQ

What is CY25701FLXCT used for?

CY25701FLXCT is used as a programmable spread-spectrum crystal oscillator for EMI reduction and clock generation in digital electronics.

Where can I find the CY25701FLXCT datasheet download?

The CY25701FLXCT documentation is included in the CY25701 programmable high-frequency crystal oscillator datasheet from Infineon / Cypress.

What should be considered in CY25701FLXCT pinout design?

Pinout design should confirm OE, VSS, SSCLK, and VDD connections, local decoupling, output loading, and routing to the receiving clock input.

Does CY25701FLXCT support no-spread operation?

Yes. The CY25701 family supports no-spread XO operation in addition to center-spread and down-spread options.

Can CY25701FLXCT be replaced by any 4-pin oscillator?

No. The replacement must match frequency, spread-spectrum behavior, output type, supply voltage, package, temperature flow, and programming configuration.