Texas Instruments SN74HC595 74HC595 74HC595N 8-Bit Shift Registers With 3-State Output Registers DIP16 50 Pack 8-Bit Serial-In, Parallel-Out Shift Wide Operating Voltage Range of 2 V to 6 V High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads Low Power Consumption: 80-microA (Max) ICC Low Input Current: 1 microA (Max)