Toshiba Electronics (UK) Ltd Multivibrators 74HC4538D

The 74HC4538D is a dual monostable multivibrator designed using high-speed CMOS technology, offering performance comparable to LSTTL while maintaining low power consumption. It features two trigger inputs: a positive edge input (A) and a negative edge input (B), both of which are compatible with slow rise and fall times due to their Schmitt trigger design. The output remains in a monostable state for a duration determined by external resistor and capacitor values, with the ability to extend this period through retriggering. Key specifications include a typical propagation delay of 25 ns at a supply voltage of 5 V, a wide operating voltage range from 2.0 V to 6.0 V, and low power dissipation with a maximum standby current of 4.0 µA and an active state current of 350 µA at 25 °C. The device is packaged in a 16-pin SOIC format and includes protection circuits against static discharge and transient voltage. This multivibrator is suitable for applications requiring precise timing control and low power operation.