BUY ICM7555ISA+ https://www.utsource.net/itm/p/4530967.html
IC OSC SGL TIMER 500KHZ 8-SOIC
+ Description: CMOS Timer Features: - Low power consumption - High accuracy - Wide operating voltage range - Low output leakage current - Low input current - High output drive capability - High noise immunity Application: - Pulse width modulation - Motor speed control - Timer applications - Frequency synthesis - Pulse position modulation - Pulse generation - Signal conditioning (For reference only)