HEF4538B MSI Dual Precision Monostable Multivibrator

The HEF4538B is a dual retriggerable-resettable Monostable Multivibrator Each multivibrator has an active LOW trigger/retrigger input (I0 ), an active HIGH trigger/retrigger input (I1 ), an overriding active LOW direct reset input (CD), an output (O) and its complement (O), and two pins (CTC(1) RCTC ) for connecting the external Timing components Ct and Rt . Typical pulse width variation over temperature range is 02%. The HEF4538B may be triggered by either the positive or the negative edges of the input pulse and will produce an accurate output pulse with a pulse width range of 10 s to infinity. The duration and accuracy of the output pulse are determined by the external Timing components Ct and Rt . The output pulse width (T) is equal to Rt x Ct . The linear design techniques in LOCMOS guarantee precise control of the output pulse width.A LOW level at CD terminates the output pulse immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant to slower rise and fall times.Note 1) Always connected to ground.
By NXP Semiconductors
HEF4538B 's PackagesHEF4538B 's pdf datasheet



HEF4538B Pinout, Pinouts
HEF4538B pinout,Pin out
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