描述 Description

The MK2049 is a Phase-Locked Loop (PLL) based clock synthesizer, which accepts an 8 kHz clock input as a reference and generates T1, E1, T3, E3, and OC3 frequencies. The device can also accept a T1, E1, T3, or E3 input clock and provide the same output for loop timing. All outputs are frequency locked together and to the input. This allows for the generation of locked clocks to an 8 kHz backplane clock, simplifying clock distribution in communications systems.

特性 Features

? Packaged in 20 pin SOIC

? Meets the TR62411, ETS300 011, and GR-1244 specification for MTIE, Pull-in/Hold-in Range, Phase Transients, and Jitter Generation for Stratum 3, 4, and 4E

? Accepts multiple inputs: 8 kHz backplane clock or Loop Timing frequencies

? Locks to 8 kHz ±100 ppm (External mode)

? Exact internal ratios eliminate the need for external dividers

? Zero ppm synthesis error in all output clocks.

? Output clock rates include T1, E1, T3, E3, and OC3÷8

? 5 V ±5 operation

? Offered in Commercial and Industrial temperature versions