MC14518集成电路（IC）的计数器除法器规格书PDF中文资料

MC14518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MC14518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 MC14518B dual BCD counter and the MC14520B dual binary counter are constructed with MOS P−channel and N−channel enhancement mode devices in a single monolithic structure. Each consists of two identical, independent, internally synchronous 4−stage counters. The counter stages are type D flip−flops, with interchangeable Clock and Enable lines for incrementing on either the positive−going or negative−going transition as required when cascading multiple stages. Each counter can be cleared by applying a high level on the Reset line. In addition, the MC14518B will count out of all undefined states within two clock periods. These complementary MOS up counters find primary use in multi−stage synchronous or ripple counting applications requiring low power dissipation and/or high noise immunity.

特性 Features

• Diode Protection on All Inputs

• Supply Voltage Range = 3.0 Vdc to 18 Vdc

• Internally Synchronous for High Internal and External Speeds

• Logic Edge−Clocked Design — Incremented on Positive Transition of Clock or Negative Transition on Enable

• Capable of Driving Two Low−power TTL Loads or One Low−power

Schottky TTL Load Over the Rated Temperature Range

• Pb−Free Packages are Available*