CD74HCT4020 - 高速 CMOS 逻辑 14 级二进制计数器

CD74HCT4020是TI德州仪器公司的一款计数器/算术/奇偶校验功能产品，CD74HCT4020是高速 CMOS 逻辑 14 级二进制计数器，本站介绍了CD74HCT4020的封装应用图解、特点和优点、功能等，并给出了与CD74HCT4020相关的TI元器件型号供参考。

CD74HCT4020 - 高速 CMOS 逻辑 14 级二进制计数器 - 计数器/算术/奇偶校验功能 - 特殊逻辑 - 德州仪器

产品描述

The ’HC4020 and ’HCT4020 are 14-stage ripple-carry binary counters. All counter stages are master-slave 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.

产品特性

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°C to 125°C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il 1µA at VOL, VOH

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