The SN54HC164 and SN74HC164 are 8-bit parallel output serial shift registers that feature AND-gated serial inputs and an asynchronous clear (CLR) input. Package options include plastic small-outline (D) and ceramic flat (W) packages, ceramic chip carriers (FK), and standard plastic (N) and ceramic (J) 300-mil DIPs.
The document details the SN54HC164 and SN74HC164 devices, which are 8-bit shift registers featuring AND-gated serial inputs and an asynchronous clear input. The SN54HC164 is characterized for military temperature ranges (-55°C to 125°C), while the SN74HC164 covers commercial temperatures (-40°C to 85°C). Available packages include Plastic Small-Outline (D), Ceramic Flat (W), Ceramic Chip Carriers (FK), and Standard Plastic (N) or Ceramic (J) 300-mil DIPs.
The datasheet provides comprehensive technical data including absolute maximum ratings, recommended operating conditions, electrical characteristics over temperature, timing requirements for setup and hold times, switching characteristics, and detailed measurement information for propagation delay and output transition times.
| Number of Bits | 8-bit |
|---|---|
| Operating Temperature (SN54HC164) | -55°C to 125°C |
| Operating Temperature (SN74HC164) | -40°C to 85°C |
| Max Power Dissipation Capacitance | 135 pF |
Package options include Plastic Small-Outline (D), Ceramic Flat (W), Ceramic Chip Carriers (FK), and Standard Plastic (N) or Ceramic (J) 300-mil DIPs.
The gated serial inputs permit complete control over incoming data; a low at either input inhibits entry of new data and resets the first flip-flop to low.