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Product attributes Property Value
Manufacturer Cypress Semiconductor Corp
Product Series
Packaging Bulk |
Type Clock Synthesizer
PLL Yes
Input Crystal
Output Clock
Number of Circuits 1
Ratio - Input:Output 1:15
Differential - Input:Output No/No
Frequency - Max 66.66MHz
Divider/Multiplier Yes/No
Voltage - Supply 3.135V ~ 3.6V, 4.5V ~ 5.5V
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 28-SOIC (0.295", 7.50mm Width)
Supplier Device Package 28-SOIC

The CY2254ASC-1 is a Clock Synthesizer from Cypress Semiconductor, featuring an integrated PLL for generating stable system clocks. With a single circuit supporting frequencies up to 66.66 MHz, it accepts a crystal input and provides a clean clock output. Packaged in a 28-SOIC and rated for 0°C to 70°C, it is well-suited for PC, embedded, and consumer applications.

  • Integrated PLL: Reduces external component count and simplifies clock generation design.
  • Standard Frequency: Supports 66.66 MHz, ideal for legacy and mainstream system bus architectures.
  • Wide Package Compatibility: 28-SOIC package is easy to integrate into existing PCB layouts.
  • Reliable Performance: Designed for 0°C to 70°C commercial temperature environments.

PC Motherboard Clock Generation

Provides the main system clock for CPUs and memory controllers, ensuring stable operation at 66.66 MHz for legacy and embedded systems.

Embedded System Timing

Generates precise clock signals for microcontrollers and FPGAs in industrial control and automation applications.

Networking Equipment

Used in routers and switches to synchronize data processing and packet forwarding at standard bus speeds.

Consumer Electronics

Delivers reliable clocking for set-top boxes and gaming consoles, supporting video and audio processing pipelines.

Storage Controllers

Provides timing for hard disk drive and SSD controllers, ensuring data read/write operations are synchronized.

Q: What type of device is the CY2254ASC-1?
A: It is a Clock Synthesizer from Cypress Semiconductor, designed to generate system clocks from a crystal reference.
Q: Does the CY2254ASC-1 include a PLL?
A: Yes, it features an integrated PLL for frequency multiplication and synthesis.
Q: What are the input and output types?
A: It accepts a Crystal input and provides a standard Clock output.
Q: How many circuits does it have and what is the maximum frequency?
A: It has 1 circuit and supports a maximum frequency of 66.66 MHz.
Q: What is the operating temperature range and package type?
A: It operates from 0°C to 70°C and comes in a 28-SOIC (0.295", 7.50mm Width) package.
Base Product Number : CY2254ASC
1 Circuit 28-SOIC 66.66MHz Clock Generator Clock Synthesizer Cypress Frequency Synthesizer PLL
Q: What type of device is the CY2254ASC-1?
A: It is a Clock Synthesizer from Cypress Semiconductor, designed to generate system clocks from a crystal reference.
Q: Does the CY2254ASC-1 include a PLL?
A: Yes, it features an integrated PLL for frequency multiplication and synthesis.
Q: What are the input and output types?
A: It accepts a Crystal input and provides a standard Clock output.
Q: How many circuits does it have and what is the maximum frequency?
A: It has 1 circuit and supports a maximum frequency of 66.66 MHz.
Q: What is the operating temperature range and package type?
A: It operates from 0°C to 70°C and comes in a 28-SOIC (0.295", 7.50mm Width) package.