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aip74hc/hct238
3-to-8 line decoder/demultiplexer

the aip74hc/hct238 decodes three binary weighted address inputs (a0, a1 and a2) to eight mutually exclusive outputs (y0 to y7). the device features three enable inputs (e()1 ande()2 and e3). every output will be low unlesse()1 ande()2 are low and e3 is high. this multiple enable function allows easy parallel expansion to a 1-of-32 (5 to 32 lines) decoder with just four aip74hc/hct238 ics and one inverter. the aip74hc/hct238 can be used as an eight output demultiplexer by using one of the active low enable inputs as the data input and the remaining enable inputs as strobes. inputs include clamp diodes. this enables the use of current limiting resistors to interface inputs to voltages in excess of vcc.


  • main features product

  • product documents

  • input levels:

    for aip74hc238: cmos level

    for aip74hct238: ttl level

  • demultiplexing capability

  • multiple input enable for easy expansion

  • ideal for memory chip select decoding

  • active high mutually exclusive outputs

  • specified from -40℃ to 105℃

  • packaging information: dip16/sop16/tssop16


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