Synchronous Equipment Timing Source PLL
  • ACS8526
    • LC/P Lite Line Card Protection Switch for PDH, SONET, or SDH Systems
  • ACS8527
    • MUXPLL Line Card Protection Switch for PDH, SONET, or SDH Systems
  • ACS8530
    • Synchronous Equipment Timing Source for Stratum 2/3E/3 Systems
  • ACS8595
    • ATCA Line Card Protection Switch for SONET/SDH AdvancedTCA Systems
  • SX1239
    • Low Power Integrated UHF Receiver
  • SC4538
    • High Efficiency Boost Converter for up to 10 LEDs
  • SC4539
    • High Efficiency Boost Converter for up to 6 LEDS
  • SC561
    • Dual Output Low Noise LDO Linear Regulator
  • SC810
    • Single Input/Single Mode Single-cell Li-ion Battery Charger
  • SCDAS4F
    • Standard Recovery, High Current Center Tap and Doubler Rectifier Assemblies
Semtech ACS8525A

Semtech ACS8525A

LC/P Line Card Protection Switch for SONET/SDH Systems

The ACS8525A is a highly integrated, single-chip solution for “Hit-less” protection switching of SEC (SDH/SONET Equipment Clock) + Sync clock “Groups”, from Master and Slave SETS clock cards and a third (Stand-by) source, for Line Cards in a SONET or SDH Network Element.

Features


  • SONET/SDH applications up to OC-3/STM-1 bit rate.
  • Switches between grouped inputs (SEC/Sync pairs).
  • Inputs: three SECs at any of 2, 4, 8 kHz (and N x 8 kHz multiples up to 155.52 MHz), plus Frame Sync/Multi-Frame Sync.
  • Outputs: two SEC clocks at any of several spot frequencies from 2 kHz up to 77.76 MHz via the TTL/CMOS port and up to 311.04 MHz via the PECL/LVDS port.
  • Selectable clock I/O port technologies.
  • Modes for E3/DS3 and multiple E1/DS1 rate output clocks.
  • Frequency translation of SEC input clock to a different local line card clock.
  • Robust input clock source activity monitoring on all inputs.
  • Supports Free-run, Locked and Digital Holdover modes of operation.
  • Automatic “Hit-less” source switchover on loss of input.
  • External force fast switch between SEC1/SEC2 inputs.
  • Phase Build-out for output clock phase continuity during input switchover.
  • PLL “Locked” and “Acquisition” bandwidths individually selectable from 18, 35 or 70 Hz.
  • Serial interface for device set-up.
  • Single 3.3 V operation.
  • Operating temperature (ambient) of 0 to +70°C.
  • Available in LQFP 64 package.
  • Lead (Pb)-free version available (ACS8525T), RoHS and WEEE compliant.

Applications


Packaging

LQFP64

Order Codes

  • ACS8525 A: NCNR, 160 per tray, ok to order partial tray quantities
  • ACS8525AT: Lead-free, RoHS and WEEE compliant, NCNR, 160 per tray, ok to order partial tray quantities