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Diodes Incorporated introduces 74HC164, 74HCT164, 74AHC164, and 74AHCT164 Serial Shift Registers

The 74HC164 remains one of the most popular parts from the 74HC logic family. The part is a serial input 8-bit edge triggered shift register that has 8 push pull outputs.

The 74HC164 features standard CMOS logic inputs while the 74HCT164 is suited for applications requiring TTL logic thresholds.

Both versions feature 4mA drive capability. The 74AHC164 is a higher performance version that features 8mA drive capability and faster propagation times.

The 74AHCT is the TTL compatible version. SO-14 and TSSOP-14 packages are being made available at the initial release.

Wide Supply Voltage Range

  • The 74HC164 operates from 2.0V to 6.0V
  • The 74AHC164 operates from 2.0V to 5.5V
  • The 74HCT164 and 74AHCT164 operate from 4.5V to 5.5V


Updated 5V CMOS Process / Diodes Controlled Packaging

  • The die are fabricated on an upgraded 5V process that will guarantee a long term supply. The TSSOP-14 and SO-14 are packaged and tested at Diodes’ majority owned facilities allowing for the best supply chain control and continued supply.


Direct Replacement

  • The 74HC164, 74HCT164, 74AHC164, and 74AHCT164 are direct replacements for industry standard parts


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