3.3 V, LVPECL/LVCMOS Clock Multiplier
The NB3N3020 is a high precision, low phase noise selectable clock multiplier. The device takes a 5 – 27 MHz fundamental mode parallel resonant crystal or a 2 − 210 MHz LVCMOS single ended clock source and generates a differential LVPECL output and a single ended LVCMOS/LVTTL output at a selectable clock output frequency which is a multiple of the input clock frequency. Three tri−level (Low, Mid, High) LVCMOS/LVTTL single ended select pins set one of 26 possible clock multipliers. The LVCMOS/LVTTL output enable (OE1) tri−states the LVCMOS/LVTTL clock output (CLK1) when low. When the LVTTL/LVCMOS output enable (OE2) is LOW, LVPECL CLK2 is forced LOW and LVPECL CLK2 is forced HIGH.
