© Warren Gay 2017
Warren Gay, Custom Raspberry Pi Interfaces, 10.1007/978-1-4842-2406-9_10
Warren Gay1
(1)St Catharines, Ontario, Canada
Like input GPIOs in Chapter 9, the application designer may require more GPIO outputs. Because this 74HC595 part is a member of the “HC” logic family, it is able to operate with a VCC ranging from 2.0 to 6.0 volts. This is perfect for operating under the 3.3V Raspberry Pi and costs less than a dollar at digikey.com. Figure 10-1 illustrates a chip that I’ve used.
Note that the HCT family is designed for TTL input levels. I focus ...
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