SN74LS14 Hex schmitt-trigger inverters |

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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) Channels (#) IOL (Max) (mA) IOH (Max) (mA) ICC (uA) Input type Output type Features Data rate (Mbps) Rating Operating temperature range (C) Package Group
SN74LS14 Order now LS     4.75     5.25     6     8     -0.4     60000     Schmitt-Trigger     Push-Pull     High speed (tpd 10-50ns)
Input clamp diode    
70     Catalog     0 to 70     PDIP | 14
SOIC | 14
SO | 14
SSOP | 14    
SN54LS14 Samples not available LS     4.5     5.5     6     8     -0.4     60000     Schmitt-Trigger     Push-Pull     High speed (tpd 10-50ns)     70     Military     -55 to 125     CDIP | 14
CFP | 14
LCCC | 20