74AHC3G14(2009) データシートの表示（PDF） - NXP Semiconductors.
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74AHC3G14 Datasheet PDF : 16 Pages
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NXP Semiconductors
74AHC3G14; 74AHCT3G14
Inverting Schmitt trigger
200
∆ICC(AV)
(µA)
150
100
tf = input fall time (ns); 90 % to 10 %;
∆ICC(AV) = average additional supply current (µA).
∆ICC(AV) differs with positive or negative input transitions, as shown in Figure 15
and Figure 16.
For 74AHC3G14 and 74AHCT3G14 used in relaxation oscillator circuit, see Figure 17.
Note to the application information:
1. All values given are typical unless otherwise specified.
mna036
positive-going
edge
200
∆ICC(AV)
(µA)
150
100
mna058
positive-going
edge
50
50
negative-going
edge
negative-going
edge
0
0
2.0
4.0
6.0
VCC (V)
0
0
2
4 VCC (V) 6
Linear change of VI between 0.1VCC to 0.9VCC
Fig 15. Average additional ICC for 74AHC3G14 Schmitt
trigger devices
Linear change of VI between 0.1VCC to 0.9VCC
Fig 16. Average additional ICC for 74AHCT3G14
Schmitt trigger devices
R
C
mna035
For 74AHC3G14:
f
=
-1--
T
≈
0---.--5---5---1-×-----R----C---
For 74AHCT3G14: f = T-1-- ≈ 0---.--6---0---1-×-----R----C---
Fig 17. Relaxation oscillator using the 74AHC3G14 and 74AHCT3G14
74AHC_AHCT3G14_4
Product data sheet
Rev. 04 — 5 May 2009
© NXP B.V. 2009. All rights reserved.
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