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ZHCSLY3B August 2020 – December 2021 SN74HCS164

PRODUCTION DATA

8.4 Device Functional Modes

Function Table lists the functional modes of the SN74HCS164.

Table 8-1 Function Table

INPUTS⁽¹⁾				FUNCTION
A	B	CLR	CLK	FUNCTION
X	X	L	X	Shift register is cleared.
L	X	H	↑	First stage of the shift register goes low. Other stages store the data of previous stage, respectively.
X	L	H	↑	First stage of the shift register goes low. Other stages store the data of previous stage, respectively.
H	H	H	↑	First stage of the shift register goes high. Other stages store the data of previous stage, respectively.

(1) H = High Voltage Level, L = Low Voltage Level, X = Don't Care