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SN54LS688

ACTIVE

8-Bit Identity/Magnitude Comparators (P=Q) with Enable

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Data sheet

SN54LS688

ACTIVE
Data sheet Order now

Product details

Technology family LS Bits (#) 8 Rating Military Operating temperature range (°C) -55 to 125
Technology family LS Bits (#) 8 Rating Military Operating temperature range (°C) -55 to 125
CDIP (J) 20 167.464 mm² (— mm × — mm) CFP (W) 20 90.5828 mm² (— mm × — mm) LCCC (FK) 20 79.0321 mm² (— mm × — mm)
  • 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
  • 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

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.

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.
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SN74HC688 ACTIVE 8-Bit Identity/Magnitude Comparators (P=Q) with Enable Voltage range 2V to 6V, average propagation delay 20ns, average drive strength 8mA

Technical documentation

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Top documentation Type Title Format options Date
* Data sheet 8-Bit Magnitude/Identity Comparators datasheet Mar 1, 1988
* SMD SN54LS688 SMD 84153012A Jun 21, 2016

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