The 74HC123D.653 is a dual monostable multi-vibrator from Nexperia. It is a high-speed Si-gate CMOS logic IC. It is used for applications that require a precise pulse width with retriggering, such as pulse position modulation timing, output pulse width period adjustment, sampling frequency rate adjustment, computer interface timing and traffic control. The 74HC123D.653 features high noise immunity, low propagation delay and a wide operating supply voltage range. This part has two separate inputs, one active low and one active high. It also has two separate output control pins, one active low and one active high. The maximum output current of the 74HC123D.653 is ±60mA.