The supply voltage of the programmable timer can rate 4.5V. You can read the timer clock's additional feature in the follwing: RETRIGGERABLE. The sum of the IC chip pins is 16 . The number of the chip's terminations sums up to 16. Its subcategory belongs to Prescaler/Multivibrators.
CD74HC123NS Features
Additional Feature: RETRIGGERABLE
CD74HC123NS Applications
There are a lot of Texas Instruments CD74HC123NS Programmable Timers & Oscillators applications.