Click to expand full text
NB3L83948C
2.5 V / 3.3 V Differential and LVTTL/LVCMOS 2:1 MUX to 1:12 LVCMOS Fanout
Description The NB3L83948C is a pure 2.5 V / 3.3 V (VDD = VDDO) or mixed
mode 3.3 V Core (VDD) / 2.5 V Output (VDDO) clock distribution buffer with the capability to select either a differential LVPECL / LVDS / LVHSTL / SSTL / HCSL or single ended LVCMOS / LVTTL compatible input clock, such as a Primary or a Test Clock. All other control inputs (CLK_SEL, CLK_EN, and OE) are LVTTL/LVCMOS level compatible.
The NB3L83948C provides an enable input, CLK_EN pin, which synchronously enables or disables the clock outputs while in the LOW state. Since this input is internally synchronized to the input clock, changing only when the input is LOW, potential output glitching or runt pulse generation is eliminated.