SN74HCS164

• Wide operating voltage range: 2 V to 6 V
• Schmitt-trigger inputs allow for slow or noisy input signals
• Low power consumption
  • Typical I_CC of 100 nA
  • Typical input leakage current of ±100 nA
• ±7.8-mA output drive at 6 V
• Extended ambient temperature range: –40°C to +125°C, T_A

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The SN74HCS164 device contains an 8-bit shift register with 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. All inputs include Schmitt-triggers, eliminating any erroneous data outputs due to slow-edged or noisy input signals.