FemtoClock® Crystal-to-HCSL Clock Generator
NOTICE - The following device(s) are recommended alternatives:
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Overview
Description
The 841604I is an optimized PCIe and sRIO clock generator and member of the family of high-performance clock solutions from IDT. The device uses a 25MHz parallel crystal to generate 100MHz and 125MHz clock signals, replacing solutions requiring multiple oscillator and fanout buffer solutions. The device has excellent phase jitter (< 1ps rms) suitable to clock components requiring precise and low-jitter PCIe or sRIO or both clock signals. Designed for telecom, networking and industrial applications, the 841604I can also drive the high-speed sRIO and PCIe SerDes clock inputs of communication processors, DSPs, switches and bridges.
Features
- Four differential clock outputs: configurable for PCIe (100MHz) and sRIO (125MHz) clock signals
- Selectable crystal oscillator interface, 25MHz, 18pF parallel resonant crystal or LVCMOS/LVTTL single-ended reference clock input
- Supports the following output frequencies: 100MHz or 125MHz
- VCO: 500MHz
- PLL bypass and output enable
- PCI Express® (2.5Gb/s) and Gen 2 (5 Gb/s) jitter compliant
- RMS phase jitter, 125MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.45ps (typical) - Full 3.3V power supply mode
- -40°C to 85°C ambient operating temperature
- Available in lead-free (RoHS 6) package
Documentation
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| PDF 504 KB | Datasheet | ||
| PDF 91 KB | Application Note | ||
| PDF 1.99 MB | Application Note | ||
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| PDF 108 KB | Application Note | ||
| PDF 1016 KB | End Of Life Notice | ||
| PDF 1.83 MB | Overview | ||
| PDF 33 KB | Product Change Notice | ||
| PDF 31 KB | Product Change Notice | ||
| PDF 439 KB | Product Change Notice | ||
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Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| TSSOP | 28 | I | Yes | Tube | ||
| TSSOP | 28 | I | Yes | Reel |
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