SCLS158F December 1982 – February 2022 SN54HC4020 , SN74HC4020
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The ’HC4020 devices are 14-stage binary ripple-carry counters that advance on the negative-going edge of the clock pulse. The counters are reset to zero (all outputs low) independently of the clock (CLK) input when the clear (CLR) input goes high.