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ispClock5300S


Overview

The ispClock5300S is an in-system-programmable zero delay universal fan-out buffer for use in clock distribution applications. The ispClock5300S family provides 4 to 20 single-ended ultra low skew outputs.
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ispClock5300S

Block Diagram

Features

  • Four Operating Configurations
    • Zero delay buffer
    • Zero delay and non-zero delay buffer
    • Dual non-zero delay buffer
    • Non-zero delay buffer with output divider
  • 8MHz to 267MHz Input/Output Operation
  • Low Output to Output Skew (<100ps)
  • Low Jitter Peak-to-Peak (< 70 ps)
  • Up to 20 Programmable Fan-out Buffers
    • Programmable single-ended output standards and individual enable controls
      • LVTTL, LVCMOS, HSTL, eHSTL, SSTL
    • Programmable output impedance
      • 40 to 70Ω in 5Ω increments
    • Programmable slew rate
    • Up to 10 banks with individual VCCO and GND
      • 1.5V, 1.8V, 2.5V, 3.3V
  • Fully Integrated High-Performance PLL
    • Programmable lock detect
    • Three “Power of 2” output dividers (5-bit)
    • Programmable on-chip loop filter
    • Compatible with spread spectrum clocks
  • Precision Programmable Phase Adjustment (Skew) Per Output
  • 8 settings; minimum step size 156ps
    • Locked to VCO frequency
 
  • Up to +/- 5ns skew range
  • Coarse and fine adjustment modes
  • Up to Three Clock Frequency Domains
  • Flexible Clock Reference and External Feedback Inputs
    • Programmable single-ended or differential input reference standards
      • LVTTL, LVCMOS, SSTL, HSTL, LVDS, LVPECL, Differential HSTL, Differential SSTL
    • Clock A/B selection multiplexer
    • Programmable Feedback Standards
      • LVTTL, LVCMOS, SSTL, HSTL
    • Programmable termination
  • All Inputs and Outputs are Hot Socket Compliant
  • Full JTAG Boundary Scan Test In-System Programming Support
  • Exceptional Power Supply Noise Immunity
  • Commercial (0 to 70°C) and Industrial (-40 to 85°C) Temperature Ranges
  • 48-pin and 64-pin TQFP Packages
  • Applications
    • Circuit board common clock distribution
    • PLL-based frequency generation
    • High fan-out clock buffer
    • Zero-delay clock buffer


Four Modes of Operation

Clock 5300S Zero Delay Buffer Mode

Zero Delay Buffer Mode

Clock5300S Dual Non-Zero Delay Buffer Mode

Dual Non-Zero Delay Buffer Mode

   
Clock5300S Zero and Non-Zero Delay Buffer Mode

Zero Delay Buffer and Non-Zero Delay Buffer Mode

clock5300S Non-Zero Delay Buffer w/ and w/o Divider

Non-Zero Delay Buffer with and without Output Dividers