Patent ID: 6529564
Filing Date: 2003-03-04
Classification: H03F,H03K,H04L

Abstract:
A data pulse receiver responsive to a clocked data signal having a continuous sequence of tansitions, the data pulse receiver comprising:data regeneration means for providing a hysteresis to regenerate data in response to a first input signal derived from the clocked data signal, the data regeneration means comprising: (i) a first differential amplifier including first and second transistors, the bases of which are ac grounded; and (ii) first hysteresis means including third and fourth transistors, the bases of which are connected to the collectors of the first and second transistors, operating current of the first hysteresis means being provided by a first current circuit, the first hysteresis means operating in response to first differential input signals fed to the emitters of the first and second transistors, the first differential input signals being derived from the first input signal; level detection means for detecting a signal level of a second input signal derived from the clocked data signal; and control means for adjusting the hysteresis of the data regeneration means in response to the signal level detected by the level detection means.