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CD74HCT573-具有三态输出的高速 CMOS 逻辑八路透明锁存器
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TI产品 - CD74HCT573介绍

CD74HCT573 - 具有三态输出的高速 CMOS 逻辑八路透明锁存器

CD74HCT573是TI德州仪器公司的一款D类锁存器产品，CD74HCT573是具有三态输出的高速 CMOS 逻辑八路透明锁存器，本站介绍了CD74HCT573的封装应用图解、特点和优点、功能等，并给出了与CD74HCT573相关的TI元器件型号供参考。

CD74HCT573 - 具有三态输出的高速 CMOS 逻辑八路透明锁存器 - D类锁存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

The 'HCT573 devices are octal transparent D-type latches. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the logic levels of the D inputs.

A buffered output-enable (OE\) input can be used to place the eight outputs in either a normal logic state (high or low) or the 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 interface or pullup components.

OE\ does not affect the internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

产品特性

  • 4.5-V to 5.5-V VCC Operation
  • Wide Operating Temperature Range of –55°C to 125°C
  • Balanced Propagation Delays and Transition Times
  • Standard Outputs Drive Up to 10 LS-TTL Loads
  • Significant Power Reduction Compared to LS-TTL Logic ICs
  • Inputs Are TTL-Voltage Compatible

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