Patent ID: 8130018

Claim:
A latch module comprising: a sense pair of transistor elements coupled together for sensing a differential input signal at input terminals; a level-shift module for producing a differential output signal at output terminals; a regenerative pair of transistor elements coupled together and with said sense pair for holding said output signal through said level-shift module; a pair of gate transistor elements connected in series respectively with said sense pair of transistor elements and with said regenerative pair of transistor elements and responsive to an alternating differential gate signal to activate alternately said sense pair during sense periods and said regenerative pair during store periods; and a current injector for injecting current between at least one of said gate transistors and the corresponding sense or regenerative pair of transistor elements so that said sense periods are of different duration from said store periods; wherein said current injector is responsive to a tuning signal to control the relative durations of said sense periods and said store periods.