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SN74F574-具有三态输出的八路边沿 D 类触发器
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TI产品 - SN74F574介绍

SN74F574 - 具有三态输出的八路边沿 D 类触发器

SN74F574是TI德州仪器公司的一款D类触发器产品，SN74F574是具有三态输出的八路边沿 D 类触发器，本站介绍了SN74F574的封装应用图解、特点和优点、功能等，并给出了与SN74F574相关的TI元器件型号供参考。

SN74F574 - 具有三态输出的八路边沿 D 类触发器 - D类触发器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

This 8-bit flip-flop features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. It is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops of the SN74F574 are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs will be set to the logic levels that were set up at the data (D) inputs.

A buffered output enable input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.

The output enable does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN74F574 is characterized for operation from 0°C to 70°C.

产品特性

  • Eight D-Type Flip-Flops in a Single Package
  • 3-State Bus-Driving True Outputs
  • Full Parallel Access for Loading
  • Buffered Control Inputs
  • Package Options Include Plastic Small-Outline Packages and Standard Plastic 300-mil DIPs

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