SN54HC164, SN74HC164 Texas Instruments TI pdf datasheet download

SN54HC164, SN74HC164
8-BIT PARALLEL-OUT SERIAL SHIFT REGISTERS

Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 80-μA Max ICC
Typical tpd = 20 ns
±4-mA Output Drive at 5 V
Low Input Current of 1 μA Max
AND-Gated (Enable/Disable) Serial Inputs
Fully Buffered Clock and Serial Inputs
Direct Clear

description/ordering information

These 8-bit shift registers feature AND-gated
serial inputs and an asynchronous clear (CLR)
input. 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.

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