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SN74AC533 - 产品图解:
SN74AC533-具有三态输出的八路透明 D 类锁存器
TI产品 - SN74AC533介绍
SN74AC533 - 具有三态输出的八路透明 D 类锁存器

SN74AC533是TI公司的一款D类锁存器产品,SN74AC533是具有三态输出的八路透明 D 类锁存器,本页介绍了SN74AC533的产品说明、应用、特性等,并给出了与SN74AC533相关的TI元器件型号供参考。

SN74AC533 - 具有三态输出的八路透明 D 类锁存器 - D类锁存器 - 触发器/锁存器/寄存器 - TI公司(Texas Instruments,德州仪器)


The ’AC533 devices are octal transparent D-type latches with 3-state outputs. When the latch-enable (LE) input is high, the Q\ outputs follow the complements of the data (D) inputs. When LE is taken low, the Q\ outputs are latched at the inverse logic levels set up at 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 logic levels) 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 need for 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.


  • 2-V to 6-V VCC Operation
  • Inputs Accept Voltages to 6 V
  • Max tpd of 10.5 ns at 5 V
  • 3-State Inverting Outputs Drive Bus Lines Directly
  • Full Parallel Access for Loading

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