The 'LS597 comes in a 16-pin package and consists of an 8-bit storage latch feeding a parallel-in, serial-out 8-bit shift register. Both the storage register and shift register have positive-edge triggered clocks. The shift register also has direct load (from storage) and clear inputs.

The 'LS598 comes in a 20-pin package and has all the features of the 'LS597 plus 3-state I/O ports that provide parallel shift register outputs and also has multiplexed serial data inputs.

• 8-Bit Parallel Storage Register Inputs ('LS597)
• Parallel 3-State I/O, Storage Register Inputs, Shift Register Outputs ('LS598)
• Shift Register has Direct Overriding Load and Clear
• Accurate Shift-Frequency … DC to 20 MHz

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