843251I-12中文资料FemtoClock® Crystal-to-3.3V,2.5V LVPECL Clock Generator数据手册Renesas规格书

描述 Description

The 843251I-12 is a 10Gb Ethernet Clock Generator and a member of the family of high performance devices from IDT. The 843251I-12 uses an 18pF parallel resonant crystal over the range of 23.2MHz - 30MHz. For Ethernet applications, a 25MHz crystal is used. The 843251I- 12 uses IDT's 3rd generation low phase noise VCO technology, and can achieve <1ps rms phase jitter performance over the 1.875MHz - 20MHz integration range. The 843251I-12 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

特性 Features

·One Differential LVPECL output
·Crystal oscillator interface, 18pF parallel resonant crystal (23.2MHz - 30MHz)
·Output frequency range: 290MHz - 750MHz
·VCO range: 580MHz - 750MHz
·RMS phase jitter @ 312.5MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.36ps (typical)
·3.3V or 2.5V operating supply
·-40°C to 85°C ambient operating temperature
·Available in lead-free (RoHS 6) package