The MC14538B is a dual, retriggerable, resettable monostable multivibrator. It may be triggered from either edge of an input pulse, and produces an accurate output pulse over a wide range of widths, the duration and accuracy of which are determined by the external timing components, CX and RX. Unlimited Rise and Fall Time Allowed on the A Trigger Input Pulse Width Range = 10 s to 10 s Latched Trigger Inputs