onsemi Logic - Logic - Multivibrators - MC74HC4538AFELG MC74HC4538AFELG

The MC74HC4538AFELG is a dual precision monostable multivibrator that is retriggerable and resettable. It features a pinout compatible with the MC14538B and allows for triggering on both positive and negative edges of an input pulse. The output pulse width is determined by external timing components, providing flexibility in design. The device supports unlimited rise and fall times on trigger inputs and guarantees a ±10% variation in pulse width from part to part when tested under the same conditions. This multivibrator can drive up to 10 LSTTL loads and interfaces directly with CMOS, NMOS, and TTL logic levels. It operates within a voltage range of 3.0 to 6.0 V and has a low input current of 1.0 µA, contributing to its high noise immunity characteristic of CMOS devices. The MC74HC4538AFELG is available in a Pb-free SOEIAJ-16 package and complies with JEDEC standards, making it suitable for various applications requiring reliable timing and pulse generation.