SN74LS14 Hex schmitt-trigger inverters |


Hex schmitt-trigger inverters



Each circuit in SNx414 and SNx4LS14 functions as an inverter. However, because of the Schmitt-Trigger action, they have different input threshold levels for positive-going (VT+) and negative-going (VT–) signals.

These circuits are temperature compensated and can be triggered from the slowest of input ramps and still give clean, jitter-free output signals.


  • Operation From Very Slow Edges
  • Improved Line-Receiving Characteristics
  • High Noise Immunity


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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) Schmitt trigger Rating Operating temperature range (C)
SN74LS14 Order now LS     4.75     5.25     6     5     35     0.06     22     8     -0.4     Yes     Catalog     0 to 70    
SN54LS14 Samples not available LS     4.5     5.5     6     5     35     0.06     22     8     -0.4     Yes     Military     -55 to 125