ルネサス エレクトロニクス株式会社 (Renesas Electronics Corporation)
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8543

廃止品

Low Skew,1-to-4 Differential-to-LVDS Fanout Buffer

8543 Datasheet
以下のデバイスを代替品として推奨しております。
8P34S1204 - 2:4 LVDS 1.8V/2.5V Fanout Buffer for 1PPS and High-Speed Clocks
Functional replacement

概要

The 8543 is a low skew, high performance 1-to-4 Differential-to-LVDS Clock Fanout Buffer. Utilizing Low Voltage Differential Signaling (LVDS) the 8543 provides a low power, low noise, solution for distributing clock signals over controlled impedances of 100?. The 8543 has two selectable clock inputs. The CLK, nCLK pair can accept most standard differential input levels. The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL input levels. The clock enable is internally synchronized to eliminate runt pulses on the outputs during asynchronous assertion/deassertion of the clock enable pin. Guaranteed output and part-to-part skew characteristics make the 8543 ideal for those applications demanding well defined performance and repeatability.

8543 - Block Diagram
8543 - Pinout
8543 - Block Diagram
8543 - Pinout
  • Four differential LVDS output pairs
  • Selectable differential CLK, nCLK or LVPECL clock inputs
  • CLK, nCLK pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
  • PCLK, nPCLK pair can accept the following differential input levels: LVPECL, CML, SSTL
  • Maximum output frequency: 800MHz
  • Translates any single-ended input signals to LVDS levels with resistor bias on nCLK input
  • Additive phase jitter, RMS: 0.164ps (typical)
  • Output skew: 40ps (maximum)
  • Part-to-part skew: 500ps (maximum)
  • Propagation delay: 2.6ns (maximum)
  • Full 3.3V supply mode
  • 0°C to 70°C ambient operating temperature
  • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages

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