Description:
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.
 
Specifications:
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