The CD74HC597M is a 8-bit CMOS Shift Register with input storage. It is pin compatible with the LSTTL 597 devices. Each device consists of an 8-flip-flop input register and an 8-bit parallel-in/serial-in, serial-out shift register. Each register is controlled by its own clock. A "low" on the parallel load input (PL\\) shifts parallel stored data asynchronously into the shift register. A "low" master input (MR\\) clears the shift register. serial input data can also be synchronously shifted through the shift register when PL\ is high.
For rapid fast switching implement this CD74HC597M96E4 counter shift register by Texas Instruments. This counter shift register has an operating temperature range of -55 °C to 125 °C. This component will be shipped in tape and reel packaging to allow for effective mounting and safe delivery. This device has a typical operating supply voltage of 2.5|3.3|5 V. Its minimum operating supply voltage of 2 V, while its maximum is 6 V.