BUY CD4040BE https://www.utsource.net/itm/p/1400831.html
CMOS RIPPLE-CARRY BINARY COUNTER DIVIDERS
Description: The CD4040BE is a CMOS 12-stage ripple-carry binary counter/divider and oscillator. Features: - High speed - Low power consumption - Wide operating voltage range - Low input current - High noise immunity Applications: - Frequency division - Clock and timing circuits - Frequency synthesis - Pulse generation - Pulse width modulation - Event counting (For reference only)