Description
The ’HC4020 and ’HCT4020 are 14-stage ripple-carry binary counters.
All counter stages are controller/ peripheral flip- flops.
The state of the stage advances one count on the negative clock transition of each input pulse; a high voltage level on the MR line resets all counters to their zero state.
Features
- Fully static operation.
- Buffered inputs.
- Common reset.
- Negative edge clocking.
- Fanout (over temperature range).
- Standard outputs: 10 LSTTL loads.
- Bus driver outputs: 15 LSTTL loads.
- Wide operating temperature range: -55℃ to 125℃.
- Balanced propagation delay and transition times.
- Significant power reduction compared to LSTTL Logic ICs.
- HC types.
- 2 V to 6 V operation.
- High noise imm.
CD74HCT4020 Datasheet
