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74HC14 Datasheet

Hex inverting Schmitt trigger

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NXP Semiconductors
74HC14; 74HCT14
Hex inverting Schmitt trigger

,&&
P$




PQD

,&&
P$





PQD




9, 9
a. VCC = 4.5 V
Fig 11. Typical 74HCT transfer characteristics

   
9, 9
b. VCC = 5.5 V
15. Application information
The slow input rise and fall times cause additional power dissipation, this can be
calculated using the following formula:
Padd = fi (tr  ICC(AV) + tf  ICC(AV)) VCC where:
Padd = additional power dissipation (W);
fi = input frequency (MHz);
tr = rise time (ns); 10 % to 90 %;
tf = fall time (ns); 90 % to 10 %;
ICC(AV) = average additional supply current (A).
Average ICC(AV) differs with positive or negative input transitions, as shown in Figure 12
and Figure 13.
An example of a relaxation circuit using the 74HC14; 74HCT14 is shown in Figure 14.
74HC_HCT14
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 19 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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