The NB100LVEP91 is a triple input to NECL output translator.The device accepts LVPECL, LVTTL, HSTL, CML or LVDS signals, and translates them to differential -2.5 V / -3.3 V NECL output signals.
To accomplish the level translation, the LVEP91 requires three power rails.The V
supply should be connected to the positive supply, and the VEE pin should be connected to the negative power supply.The GNDI pins are connected to the system ground plane.Both V
and V
should be bypassed to ground via 0.01 uF capacitors.
Under open input conditions, the Dbar input will be biased at V
/2 and the D input will be pulled to GND.This condition will force the Q output to a low, ensuring stability.
The V
pin, an internally generated voltage supply, is available to this device only.For single-ended input conditions, the unused differential input is connected to V
as a switching reference voltage.V
may also rebias AC coupled inputs.When used, decouple V
and V
via a 0.01 uF capacitor and limit current sourcing or sinking to 0.5 mA.When not used, V
should be left open.

• Typical Maximum Frequency >2 GHz
• 430 ps Typical Propagation Delay
• Operating Range:V
• = 2.375 V to 3.8 V; V
• = -2.375 V to -3.8 V; GNDI = 0 V
• Q Output will default LOW with Inputs Open or at GND
• Pb-Free Packages are Available