Semtech 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.
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.
Note...* Meets holdover requirements, lowest bandwidth 0.1 Hz.
Order Codes
- ACS8509T: Lead (Pb) -free packaged version of ACS8509; RoHS and WEEE compliant.
Order Samples
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their products and speed up time-to-market.
For samples, use our Samples Request Form. Up to five free samples
may be requested.
Purchase
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Order Evaluation Boards
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Eval boards are readily available for most of our new and popular products. If you wish to request boards for other parts, simply type the part number in the “Select Part Number” field space of the order form. These will be subject to availability.
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