74LVC1G14(2007) Ver la hoja de datos (PDF) - NXP Semiconductors.

Número de pieza

componentes Descripción

Fabricante

74LVC1G14
(Rev.:2007)

Single Schmitt-trigger inverter

NXP Semiconductors. 

NXP Semiconductors

74LVC1G14

Single Schmitt-trigger inverter

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 (µW);

fi = input frequency (MHz);

tr = input rise time (ns); 10 % to 90 %;

tf = input fall time (ns); 90 % to 10 %;

∆ICC(AV) = average additional supply current (µA).

Average ∆ICC(AV) differs with positive or negative input transitions, as shown in Figure 12.

An example of a relaxation circuit using the 74LVC1G14 is shown in Figure 13.

12

average

I CC

(mA) 10

8

mna642

positive-going

edge

6

4

negative-going

2

edge

0

0

2

4

6

VCC (V)

Linear change of VI between 0.8 V to 2.0 V.

All values given are typical unless otherwise specified.

Fig 12. Average additional supply current as a function of supply voltage

R

f = T-1-- ≈ 0---.--5----×-1----R----C---

Fig 13. Relaxation oscillator

C

mna035

74LVC1G14_7

Product data sheet

Rev. 07 — 18 July 2007

© NXP B.V. 2007. All rights reserved.

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