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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Parametrics Compare all products in Inverting buffer/driver

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
Operating temperature range (C)
SN74LS14 SN54LS14
LS     LS    
4.75     4.5    
5.25     5.5    
6     6    
5     5    
35     35    
0.06     0.06    
22     22    
8     8    
-0.4     -0.4    
Yes     Yes    
Catalog     Military    
0 to 70     -55 to 125