SN54LS684 8-Bit Identity/Magnitude Comparators |

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8-Bit Identity/Magnitude Comparators

8-Bit Identity/Magnitude Comparators - SN54LS684


These magnitude comparators perform comparisons of two eight-bit binary or BCD words. All types provide P = Q\ outputs and all except 'LS688 provide P > Q\ outputs as well. The 'LS682, 'LS684, 'LS686, and 'LS688 have totem-pole outputs, while the 'LS685 and 'LS687 have open-collector outputs. The 'LS682 features 20-k pullup termination resistors on the Q inputs for analog or switch data.


  • Compares Two-8-Bit Words
  • Choice of Totem-Pole or Open-Collector Outputs
  • Hysteresis at P and Q Inputs
  • 'LS682 has 20-k Pullup Resistors on the Q Inputs
  • SN74LS686 and 'LS687 … JT and NT 24-Pin, 300-Mil Packages


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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Operating temperature range (C) Package Group
SN54LS684 Order now LS     4.85     5.25     8     5     35     65     30     24/-0.4       -55 to 125     CDIP | 20
LCCC | 20    
SN74LS684 Order now LS     4.85     5.25     8     5     35     65     30     24     -0.4     0 to 70     PDIP | 20
SOIC | 20
SO | 20