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Infineon Technologies CY28344PVC — Analog & Data Acquisition

Cypress CY28344PVC Frequency Synthesizer, 133 MHz, 48-SSOP

MPNCY28344PVC
End of Life

Cypress CY28344PVC, Frequency Synthesizer, PLL Yes, Input LVTTL/Crystal, Output Clock, 133 MHz max, 3.135V–3.465V supply, 1:6 ratio, 2 circuits, 48-BSSOP, 0°C to 70°C.

$2.94Ref. price · indicative, final on quote
Infineon Technologies CY28344PVC datasheet (PDF)
Packaging48-BSSOP (0.295", 7.50mm Width)
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY28344PVC specifications
ParameterValue
TypeFrequency Synthesizer
MountingSurface Mount
Voltage3.135V ~ 3.465V
Frequency133MHz
Operating temperature0°C ~ 70°C (TA)
PLLYes
InputLVTTL, Crystal
OutputClock
PackageBulk
Case48-BSSOP (0.295\", 7.50mm Width)
Divider (Multiplier)Yes/No
Number of circuits2
Ratio - Input:Output1:6
Differential - Input:OutputNo/Yes

Product details

Clock source for Intel 830M and 845 chipsets

The Cypress CY28344PVC is a PLL-based frequency synthesizer designed specifically for the Intel 830M and 845 chipset families. It accepts an LVTTL or crystal input and delivers six differential clock outputs at up to 133 MHz. The 1:6 fanout and differential outputs make it the reference clock source for the CPU, memory controller, and PCI bus on those motherboards.

Supply and temperature — fit for the intended environment

RoHS non-compliant — plan for compliance review

For EU markets or any RoHS-restricted BOM, a compliance exemption or a waiver may be needed.

Frequently asked questions

Is CY28344PVC obsolete or end-of-life?

No — the lifecycle status is Active, meaning Cypress (now Infineon) still lists it as a current product. No end-of-life notice or last-time-buy window has been issued. However, the target chipset (Intel 830M/845) is obsolete, so demand is low and the part may become harder to source through the factory channel over time.

What is the replacement for CY28344PVC?

There is no direct pin-compatible replacement listed by the manufacturer. The closest functional peer in the Cypress portfolio is the CY2305SXI-1HT, but that is a zero-delay buffer with a single-ended output, not a differential clock synthesizer. For a form-fit-function substitute, review the Infineon (ex-Cypress) clock generator family for a PLL with 1:6 differential outputs in a 48-SSOP.

Does CY28344PVC work with Intel 845 chipset?

Yes — the part was designed for the Intel 830M and 845 chipsets. It generates the required reference clocks for the CPU, memory controller hub, and I/O controller hub on those platforms. The 133 MHz maximum output covers the front-side bus speed of the 845 chipset.

What is CY28344PVC's listed PLL status?

PLL is listed as Yes — this is a phase-locked loop frequency synthesizer, not a simple clock buffer or fanout.