SN54HC164 - 8-Bit Parallel-Out Serial Shift Registers

These 8-bit shift registers feature AND-gated serial inputs and an asynchronous clear (CLR) input. The gated serial (A and B) inputs permit complete control over incoming data; a low at either input inhibits entry of the new data and resets the first flip-flop to the low level at the next clock (CLK) pulse. A high-level input enables the other input, which then determines the state of the first flip-flop. Data at the serial inputs can be changed while CLK is high or low, provided the minimum set-up time requirements are met. Clocking occurs on the low-to-high-level transition of CLK.

• Wide Operating Voltage Range of 2 V to 6 V
• Outputs Can Drive Up to 10 LSTTL Loads
• Low Power Consumption, 80-µA Maximum I_CC
• Typical t_pd = 20 ns
• ±4-mA Output Drive at 5 V
• Low Input Current of 1-µA Maximum
• AND-Gated (Enable/Disable) Serial Inputs
• Fully Buffered Clock and Serial Inputs
• Direct Clear
• On Products Compliant to MIL-PRF-38535,
  All Parameters Are Tested Unless Otherwise
  Noted. On All Other Products, Production
  Processing Does Not Necessarily Include
  Testing of All Parameters.