PinoutSpecificationsSupply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . 0.5 V to 7 VInput clamp current, IIK(VI < 0 or VI > VCC ) (see Note 1) . . .... . . . . . . ±20 mAOutput clamp current, IOK(VO< 0 or VO> VCC) (see Note 1) . . . . . . . . .. ±...
SN74HC164: PinoutSpecificationsSupply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . 0.5 V to 7 VInput clamp current, IIK(VI < 0 or VI > VCC ) (see Note 1) . . .... ....
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These 8-bit shift registers feature AND-gated serial inputs and an asynchronous clear (CLR) input of the SN74HC164. 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 setup time requirements are met. Clocking occurs on the low-to-high-level transition of CLK.