Skyworks Solutions, Inc. Clock Generators, PLLs, Frequency Synthesizers SI5344B-D-GM

The SI5344B-D-GM is a clock generator and jitter attenuator that features four input clocks and four output clocks, housed in a 44-QFN package measuring 7x7 mm. It supports a wide input frequency range of 8 kHz to 750 MHz for differential signals and 8 kHz to 250 MHz for LVCMOS signals. The output frequency range extends from 100 Hz to 1028 MHz for differential outputs and 100 Hz to 250 MHz for LVCMOS outputs. This device is designed to deliver ultra-low jitter performance of 90 fs rms and is compliant with ITU-T G.8262 (SyncE) standards. The SI5344B-D-GM offers programmable jitter attenuation bandwidth from 0.1 Hz to 4 kHz, allowing for application-specific optimization. It includes features such as hitless input clock switching, free-run and holdover modes, and glitchless on-the-fly output frequency changes. The device can be configured via a serial interface (I²C or SPI) and supports in-circuit programming with non-volatile memory. It operates over a temperature range of -40 to +85 °C and is RoHS-6 compliant. This product is suitable for applications in networking line cards, OTN muxponders, and synchronous Ethernet systems.