JAJSN44J December 1982 – October 2021 SN54HC595 , SN74HC595
PRODUCTION DATA
Table 8-1 lists the functional modes of the SNx4HC595 devices.
INPUTS | FUNCTION | ||||
---|---|---|---|---|---|
SER | SRCLK | SRCLR | RCLK | OE | |
X | X | X | X | H | Outputs QA – QH are disabled. |
X | X | X | X | L | Outputs QA – QH are enabled. |
X | X | L | X | X | Shift register is cleared. |
L | ↑ | H | X | X | First stage of the shift register goes low. Other stages store the data of previous stage, respectively. |
H | ↑ | H | X | X | First stage of the shift register goes high. Other stages store the data of previous stage, respectively. |
X | X | X | ↑ | X | Shift-register data is stored in the storage register. |