Bus Transceivers | 74VHC161284

IEEE 161284收发器

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VHC161284包含8个双向数据缓冲器和11个控制/状态缓冲器实施一个全IEEE 1284兼容的接口。 该器件支持IEEE 1284标准，设计在扩展能力端口模式(ECP)下使用。 引脚允许从附件（A端）轻松连接至主机（电缆端）。 电缆端的输出可被配置为开漏或高驱动(± 14 mA)。 电缆端此类输出的上拉和下拉串联端电阻被优化用于驱动一个外部电缆。 此外，所有电缆端的输入（除HLH外）和输出包含连接至VCC电缆电源的内部上拉电阻，以为漏极开路模式提供合适的终端和上拉电阻。 外设端的输出为标准低电平驱动CMOS输出。 DIR输入控制A1-A8/B1-B8收发器引脚上的数据流。

  • TBA
  • 支持个人电脑和打印外设间的双向并行通信IEEE 1284电平1和电平2信号标准
  • 替代两个(2) 74ACT1284器件的功能
  • 所有输入都有滞后，以提供噪声容限
  • B和Y输出电阻已优化用于驱动外部电缆
  • B和Y输出在断电器件处于高阻抗模式
  • 电缆端的输入和输出具有内部上拉电阻
  • 流通引脚配置使得外设和主机之间可以轻松连接

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74VHC161284MTDX

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Pb

A

H

P

TSSOP-48

948BQ

2

260

REEL

1000

N

17

3-State

4.5

5.5

30

84

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