CD74HCT4020
Features
- Fully static operation
- Buffered inputs
- mon 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 pared to LSTTL Logic ICs
- HC types
- 2 V to 6 V operation
- High noise immunity: NIL = 30%, NIH = 30% of
VCC at VCC = 5 V
- HCT types
- 4.5 V to 5.5 V operation
- Direct LSTTL input logic patibility, VIL = 0.8
V (max), VIH = 2 V (min)
- CMOS input patibility, II ≤ 1 µA at VOL,VOH
2 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. All inputs and outputs are buffered.
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Device Information
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