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74LV14PWDH View Datasheet(PDF) - Philips Electronics

Part Name
Description
Manufacturer
74LV14PWDH
Philips
Philips Electronics Philips
74LV14PWDH Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Philips Semiconductors
Hex inverting Schmitt-trigger
Product specification
74LV14
APPLICATION INFORMATION
The slow input rise and fall times cause additional power dissipation,
this can be calculated using the following formula:
Pad = fi × (tr × ICCa + tf × ICCa) × VCC.
Where:
Pad = additional power dissipation (mW)
fi
= input frequency (MHz)
tr = input rise time (ns); 10% – 90%
tf
= input fall time (ns); 10% – 90%
ICCa = average additional supply current (mA)
Average ICCadiffers with positive or negative input transitions, as
shown in Figure 7.
100
average
I CC
(mA)
75
50
positive-going
edge
25
negative-going
edge
0
1.0
1.5
2.0
2.5
3.0
VCC (V)
SV00431
Figure 7. Average ICC for LV Schmitt-trigger devices; linear
change of VI between 0.1 VCC to 0.9 VCC.
R
C
SV00433
Figure 8. Relaxation oscillator using the LV14.
Note to application information:
All values given are typical unless otherwise specified.
Note to Figure 8
f
+
1
T
[
0.8
1
RC
1998 Apr 20
7
 

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