SI5321-G-BC

Product Summary

The SI5321-G-BC is a precision clock multiplier that exceeds the requirements of high-speed communication systems, including OC-192/OC-48 and 10 Gigabit Ethernet. This device phase locks to an input clock in the 19, 39, 78, 155, 311 or 622 MHz frequency range and generates a frequency-multiplied clock output that can be configured for operation in the 19, 39, 78, 155, 622, 1244, or 2488 MHz frequency range. Silicon Laboratories DSPLL™ technology provides PLL functionality with unparalleled performance. It eliminates external loop filter components, provides programmable loop parameters, and simplifies design. FEC rates are supported by selectable forward and reverse 255/238 (15/14), 255/237 (85/79), and 66/64 (33/32) conversion factors. The ITU-T G.709 255/237 rate and the IEEE 802.3ae 66/64 rate are supported when using a 155 MHz or higher rate input clock. The performance and integration of Silicon Laboratories Si5321 clock IC provides high-level support of the latest specifications and systems. It operates from a single 3.3 V supply. The applications of the SI5321-G-BC are (1)SONET/SDH line/port cards; (2)Terabit routers; (3)Core switches; (4)Digital cross connects.

Parametrics

SI5321-G-BC absolute maximum ratings: (1)3.3 V DC Supply Voltage VDD33:–0.5 to 3.6 V; (2)LVTTL Input Voltage VDIG: –0.3 to (VDD33 + 0.3) V; (3)Maximum Current any output PIN: ±50 mA; (4)Operating Junction Temperature TJCT: –55 to 150℃; (5)Storage Temperature Range TSTG: –55 to 150℃; (6)ESD HBM Tolerance (100 pf, 1.5 kΩ): 1.0kV.

Features

SI5321-G-BC features: (1)Ultra-low jitter clock output with jitter generation as low as 0.3 psRMS; (2)No external components (other than a resistor and bypassing); (3)Input clock ranges at 19, 39, 78, 155, 311, or 622 MHz; (4)Output clock ranges at 19, 39, 78, 155, 311, 622, 1244, or 2488 MHz ; (5)Maximum range includes 693 MHz for 10 GbE FEC support; (6)Digital hold for loss-of-input clock ; (7)Support for 255/238 (15/14), 255/237 (85/79), and 66/64 FEC scaling (ITU-T G.709 and IEEE 802.3ae); (8)Selectable loop bandwidth; (9)Loss-of-signal alarm output; (10)Low power; (11)Small size (9×9 mm); (12)Backwards compatible with Si5320.

Diagrams