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TI - SN74ACT574 (ACTIVE) 具有三态输出的八路 D 类边沿触发器 - 触发器/锁存器/寄存器 D类触发器

SN74ACT574 (ACTIVE) 具有三态输出的八路 D 类边沿触发器 此图片只做参考用
真图请以实物为准
库存状况
  • 库存数量: 100
  • 包装规格:
  • 最小订单量:1
  • 多重订单量:1
  • 单位价格(不含税):CNY 3.40
数量:
价格
    数量单位价格(不含税)
    1-24CNY 3.40
    25-49CNY 3.23
    50-99CNY 3.06
    100-249CNY 2.89
  • 制造商:TI
  • 库存编号:1616813
  • 商品型号:SN74ACT574DW
  • RoHS胁从产品:
  • 备注:
  • 产品描述:These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads.

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. The devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops of the ’ACT574 devices are D-type edge-triggered flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (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 the increased drive provide the capability to drive bus lines in a bus-organized system without need for interface or pullup components.

OE\ does not affect internal operations of the flip-flop. 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.

特性

 

  • 4.5-V to 5.5-V VCC Operation
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 9 ns at 5 V
  • Inputs Are TTL-Voltage Compatible
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