MC74HC4040AF集成电路（IC）的计数器除法器规格书PDF中文资料

MC74HC4040AF属于集成电路（IC）的计数器除法器。由安森美半导体公司制造生产的MC74HC4040AF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。

The MC74C4040A is identical in pinout to the standard CMOS MC14040. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.

This device consists of 12 master−slave flip−flops. The output of each flip−flop feeds the next and the frequency at each output is half of that of the preceding one. The state counter advances on the negative−going edge of the Clock input. Reset is asynchronous and active−high.

State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and may have to be gated with the Clock of the HC4040A for some designs.

Features

• Output Drive Capability: 10 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1 A

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance With JEDEC Standard No. 7A Requirements

• Chip Complexity: 398 FETs or 99.5 Equivalent Gates

• Pb−Free Packages are Available*