BUY CD4040BMJ/883 https://www.utsource.net/itm/p/1493812.html
Asynchronous Up Counter
Description: The CD4040BMJ/883 is a 12-stage ripple carry Binary Counter/Divider and Oscillator manufactured by Texas Instruments. Features: - High speed operation - Low power consumption - Outputs can source or sink up to 10mA - TTL compatible - Low input current - Low quiescent current - Outputs directly interface with CMOS, NMOS, and TTL Applications: - Frequency division - Pulse generation - Clock and timing circuits - Sequential timing - Pulse width modulation - Frequency synthesis - Data transmission systems (For reference only)