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Product attributes Property Value
Manufacturer Cypress Semiconductor Corp
Product Series
Packaging Bulk |
Type Clock Generator
PLL Yes
Input Crystal
Output Clock
Number of Circuits 2
Ratio - Input:Output 2:8
Differential - Input:Output No/Yes
Frequency - Max 300MHz
Divider/Multiplier Yes/No
Voltage - Supply 3.135V ~ 3.465V
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 48-BSSOP (0.295", 7.50mm Width)
Supplier Device Package 48-SSOP

The CY28331OC is a dual-circuit Clock Generator from Cypress Semiconductor, designed to produce multiple high-frequency clocks from a single crystal. It features an integrated PLL for frequency synthesis, supporting outputs up to 300 MHz. With 2 circuits, it can drive multiple independent clock domains. Packaged in a 48-BSSOP and rated for 0°C to 70°C, it is well-suited for high-speed networking, computing, and telecom applications.

  • High Frequency: Supports up to 300 MHz, ideal for high-speed digital systems.
  • Dual Circuits: Provides two independent clock domains for flexible system design.
  • Integrated PLL: Enables precise frequency synthesis from a low-frequency crystal.
  • Compact Package: 48-BSSOP package saves board space in dense designs.

High-Speed Processor Clocking

Use the CY28331OC to generate a 300 MHz clock for a high-performance processor or FPGA, ensuring precise timing for critical operations.

Networking Switch Fabric

In networking switches, this clock generator can provide multiple high-frequency clocks for the switch fabric and line cards, ensuring synchronized data transfer.

Server Platform Timing

For servers, the device can synthesize clocks for the CPU, memory, and I/O controllers, reducing the number of crystals needed on the board.

Telecom Line Cards

In telecom equipment, it can generate clocks for various line interface units, supporting different data rates and protocols.

Broadcast Video Equipment

For professional video routers, the CY28331OC can provide high-frequency clocks for video processing ASICs, ensuring smooth video switching.

Test and Measurement

In high-speed test equipment, it can generate precise clocks for ADC/DAC converters, improving measurement accuracy.

Q: What type of device is the CY28331OC?
A: It is a Clock Generator, producing multiple clock signals from a crystal reference.
Q: Does it have a PLL?
A: Yes, it includes a PLL for frequency synthesis and multiplication.
Q: What input type does it support?
A: It accepts a crystal input, providing a stable reference for clock generation.
Q: What is the output type?
A: The output is a clock signal, generated by the PLL.
Q: How many circuits does it have?
A: It has 2 circuits, allowing it to generate multiple independent clock domains.
Q: What is the maximum frequency and package?
A: It operates up to 300 MHz and is packaged in a 48-BSSOP (7.50mm width) package.
Base Product Number : CY28331OC
2 Circuits 300MHz 48-BSSOP Clock Generator Clock IC Cypress PLL
Q: What type of device is the CY28331OC?
A: It is a Clock Generator, producing multiple clock signals from a crystal reference.
Q: Does it have a PLL?
A: Yes, it includes a PLL for frequency synthesis and multiplication.
Q: What input type does it support?
A: It accepts a crystal input, providing a stable reference for clock generation.
Q: What is the output type?
A: The output is a clock signal, generated by the PLL.
Q: How many circuits does it have?
A: It has 2 circuits, allowing it to generate multiple independent clock domains.
Q: What is the maximum frequency and package?
A: It operates up to 300 MHz and is packaged in a 48-BSSOP (7.50mm width) package.