Consider the latch of Fig. 16.1 with the two inverters identical and each characterized by VOL = 0 V, VOH = 5 V, VIL = 2 V, and VIH = 3 V. Let the transfer characteristic of each inverter be approximated by three straight-line segments. Sketch the transfer characteristic of the feedback loop of the latch and give the coordinates of points A, B, and C [refer to Fig. 16.1(b)]. What is the gain at C? What is the width of the transition region?
