XC7WT14DP datasheet(9/18 Pages) PHILIPS

Part #	XC7WT14DP

Description	High-speed Si-gate CMOS device, three inverting buffers with Schmitt trigger action

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Manufacturer	PHILIPS [NXP Semiconductors]

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XC7WT14

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Product data sheet

Rev. 2 — 3 November 2011

9 of 18

NXP Semiconductors

XC7WT14

Triple inverting Schmitt trigger

14. Application information

The slow input rise and fall times cause additional power dissipation, which 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 = input rise time (ns); 10 % to 90 %;

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

I

CC(AV) = average additional supply current (A).

I

CC(AV) differs with positive or negative input transitions, as shown in Figure 13.

For XC7WT14 used in relaxation oscillator circuit, see Figure 14.

Note to the application information:

1. All values given are typical unless otherwise specified.

Linear change of VI between 0.1VCC to 0.9VCC

Fig 13. Average additional ICC

mna058

04

6

2

VCC (V)

200

100

50

150

0

ΔICC(AV)

(

μA)

positive-going

edge

negative-going

edge

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