SN74LS598 Shift registers with input latches |

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Shift registers with input latches

Shift registers with input latches - SN74LS598


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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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) 3-state output Rating Operating temperature range (C)
SN74LS598 Order now LS     4.75     5.25     5     35     85     23     24     -2.6     No     Catalog     0 to 70