SN74HC4020中文资料14 位异步二进制计数器数据手册TI规格书

描述 Description

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.

特性 Features

• Wide Operating Voltage Range of 2 V to 6 V
• Outputs Can Drive Up To 10 LSTTL Loads
• Low Power Consumption, 80-µA Max ICC
• Typical tpd = 12 ns
• ±4-mA Output Drive at 5 V
• Low Input Current of 1 µA Max

简介

SN74HC4020属于集成电路（IC）的计数器除法器。由TI制造生产的SN74HC4020计数器，除法器计数器和除法器 IC 是数字逻辑器件，可对输入发生的逻辑转换进行计数，然后使用多个并行输出重新发送累加的计数，和/或生成单个输出信号转换，从而对应用某些整数数量输入信号转换进行响应。除了简单的事件计数，它们还可用于各种频率合成应用。