Key facts
- Model
- P12
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-04
Start here

Alliance Semiconductor P2811/12/14 Datasheet
The P2811/12/14 family is a low‑power EMI reduction IC that generates spread‑spectrum clocks at 1×, 2×, and 4× rates. It offers up to 15 dB EMI reduction, selectable spread options (Down Spread and Center Spread), and eight spread‑percentage selections from +0.625 % to -3.5 %.
The datasheet provides detailed pin configurations, electrical characteristics, package dimensions for 8‑pin SOIC and TSSOP options, and ordering codes for commercial, industrial and automotive temperature ranges.
Alliance Semiconductor P12 specifications
| Operating Voltage | 3.3 V |
|---|---|
| Input Frequency Range | 10 – 40 MHz |
| Output Frequency Range (P2811) | 10 – 40 MHz |
| Output Frequency Range (P2812) | 20 – 80 MHz |
| Output Frequency Range (P2814) | 40 – 160 MHz |
| Spread Percentage Selections | +0.625 % to -3.5 % |
| Package Types | 8‑pin SOIC and TSSOP |
| Industrial Temperature Range | -25 °C to 85 °C |
All Alliance Semiconductor P12 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating voltage of the P2811/12/14 IC?
The device operates at 3.3 V.
What input frequency range does the P2811/12/14 support?
It supports input frequencies from 10 MHz to 40 MHz.
What is the purpose of the P2811/12/14 IC?
It reduces electromagnetic interference by spreading the clock spectrum, providing up to 15 dB EMI reduction.
What package options are available for the P2811/12/14?
The device is offered in 8‑pin SOIC and 8‑pin TSSOP packages.
