The SL74HC597 is identical in pinout to the LS/ALS597. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
This device consists of an 8-bit input latch which feeds parallel data to an 8-bit shift register. Data can also be loaded serially (see Function Table).

• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 mA
• High Noise Immunity Characteristic of CMOS Devices