ACS8515中文资料启2.1线卡保护开关用于SONET或SDH网络元素数据手册Semtech规格书

特性 Features

·Suitable for Stratum 3, 4E and 4 SONET or SDH Equipment Clock (SEC) applications
·Meets AT&T, ITU-T, ETSI and Telcordia (Bellcore) specifications
·Three SEC input clocks, from 2 kHz to 155.52 MHz
·Generates two SEC output clocks, up to 311.04 MHz
·Frequency translation of SEC input clock to a different local line card clock
·Robust input clock source frequency and activity monitoring on all inputs
·Supports free-run, locked and holdover modes of operation
·Automatic 'hit-less' source switchover on loss of input
·External force fast switch between SEC inputs
·Phase build out for output clock phase continuity during input switchover
·SPI™-compatible serial microprocessor interface
·Programmable wander and jitter tracking attenuation 0.1 Hz to 20 Hz
·Single +3.3 V operation. +5 V I/O compatible
·Operating temperature (ambient) -40°C to +85°C
·64-pin LQFP package