ACS8509: Synchronous Equipment Timing Source for SONET or SDH Network Elements

The ACS8509 is a highly integrated, single-chip solution for the Synchronous Equipment Timing Source (SETS) function in a SONET or SDH Network Element. The device generates SONET or SDH Equipment Clocks (SEC) and Frame Synchronization clocks. The ACS8509 is fully compliant with the required international specifications and standards.

Collapse All

Features

Suitable for Stratum 3E*, 3, 4E, 4 and SONET
Minimum Clock (SMC) or SONET/SDH Equipment
Clock (SEC) applications
Meets AT&T, ITU-T, ETSI and Telcordia specifications
Accepts four individual input reference clocks
Generates six output clocks
Supports Free-run, Locked and Holdover modes of
operation
Robust input clock source quality monitoring on all
inputs
Automatic “hit-less” source switchover on loss of input
Phase build-out for output clock phase continuity during input switchover and mode transitions
Microprocessor interface - Intel, Motorola, Serial, Multiplexed, EPROM
Programmable wander and jitter tracking attenuation
0.1 Hz to 20 Hz
Support for Master/Slave device configuration
alignment and hot/standby redundancy
IEEE 1149.1 JTAG Boundary Scan
Single +3.3 V operation, +5 V I/O compatible
Operating temperature (ambient) -40°C to +85°C
Available in 100 pin LQFP package.
Lead (Pb)-free version available (ACS8509T), RoHS and WEEE compliant.