CD54HC4020, CD74HC4020, CD54HCT4020, CD74HCT4020 S.
Texas Instruments
CD74HC4020 - 14-Stage Binary Counter
CD54HC4020, CD74HC4020, CD54HCT4020, CD74HCT4020 SCHS201D – FEBRUARY 1998 – REVISED AUGUST 2022 CDx4HC4020, CDx4HCT4020 CDHigh-Speed CMOS Logic 14-Sta.