NCS25D31数据手册NewCoSemi中文资料规格书

描述 Description

The NCS25D31 is a highly versatile, highperformance, 10-output differential fanout buffer and level translator which can operate up to 3.1GHz with ultra-low additive jitter.\r
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The input clock can be selected from two universal differential or single-ended inputs, or one crystal input which can be overdriven by external single-ended clock. Crystal input frequencies from 8MHz to 50MHz are supported.\r
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A 3:1 input MUX controlled by two external pins is implemented to distribute the selected input clock to two banks of 5 differential outputs and one LVCMOS reference output.\r
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Both banks of differential outputs can be independently configured as LVPECL,LVDS, HCSL driver mode or disabled mode by two external pins.\r
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The LVCMOS reference output supports synchronous output enable or disable for glitch-free operation.\r
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The NCS25D31 operates from a 3.3V core supply and 3 independent 3.3V or 2.5V driver output supply, and does not have power supply sequencing requirements between the core and output supply domains.

特性 Features

• High-performance clock buffer with ultralow noise floor of -167 dBc/Hz\r
• Level translation from 3.3V core supply to output supply of 3.3V or 2.5V\r
• 3:1 input clock multiplexer which is selectable through input pins.\r
• Two universal inputs operate up to 3.1GHz and can accept LVPECL,LVDS, CML, SSTL, HSTL, or HCSL signals\r
• Both differential and single-ended input are supported\r
• Support either DC or AC-coupled input interface\r
• Crystal input frequencies from 8MHz to 50MHz\r
• Crystal overdrive mode with input frequency up to 250MHz\r
• 10 differential output with Two independent output supply banks\r
• Support LVPECL, LVDS, HCSL or HiZ output mode which is selectable per Bank\r
• Ultra-low additive jitter (at 156.25MHz) 43 fs RMS (10K to 20MHz, LVPECL) 52 fs RMS (10K to 20MHz, LVDS)\r
• Highs PSRR (at 156.25 MHz) -67 dBc LVPECL, -79 dBc LVDS\r
• LVCMOS reference clock output with independent VCCOC supply and synchronous enable input\r
• Industrial temperature range: -40°C to 85°C

应用 Application

• Clock Distribution and Level Translation\r
• Wireless and Wired Infrastructure\r
• Networking and Data Communications\r
• Switches, Routers, Line Cards, Timing Cards\r
• Portable Test and Measurement