TC74HC4538AFT multivibrator equivalent, dual retriggerable monostable multivibrator.
(Note)
* High speed: tpd = 25 ns (typ.) at VCC = 5 V
* Low power dissipation
Stand by state: ICC = 4 μA (max) at Ta = 25°C Active state: ICC = 300 μA (max) at Ta .
(1) Stand-by state The external capacitor is fully charge to VCC in the stand-by state. That means, before triggering,
QP and QN transistors which are connected to the T2 node are in the off state. Two comparators that relate to the timing of the out.
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