1 Features
• Wide operating voltage range: 2 V to 6 V
• Schmitt-trigger inputs allow for slow or noisy input
signals
• Low power consumption
– Typical ICC 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, TA

2 Applications
• Input expansion
• 8-bit data storage

3 Description
The SN74HCS166 device contains an 8-bit shift
register with one serial input and eight parallel-load
inputs.