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74HC1GU04_15 Datasheet, PDF (7/12 Pages) NXP Semiconductors – Inverter | |||
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NXP Semiconductors
74HC1GU04
Inverter
Table 9. External components for resonator (f < 1 MHz)
All values given are typical and must be used as an initial set-up
Frequency
R1
10 kHz to 15.9 kHz
2.2 Mâ¦
16 kHz to 24.9 kHz
2.2 Mâ¦
25 kHz to 54.9 kHz
2.2 Mâ¦
55 kHz to 129.9 kHz
2.2 Mâ¦
130 kHz to 199.9 kHz
2.2 Mâ¦
200 kHz to 349.9 kHz
2.2 Mâ¦
350 kHz to 600 kHz
2.2 Mâ¦
R2
220 kâ¦
220 kâ¦
100 kâ¦
100 kâ¦
47 kâ¦
47 kâ¦
47 kâ¦
Table 10. Optimum value for R2
Frequency
R2
Optimum for
3 kHz
6 kHz
10 kHz
14 kHz
>14 kHz
2.0 kâ¦
8.0 kâ¦
1.0 kâ¦
4.7 kâ¦
0.5 kâ¦
2.0 kâ¦
0.5 kâ¦
1.0 kâ¦
-
minimum required ICC
minimum inï¬uence due to change in VCC
minimum required ICC
minimum inï¬uence by VCC
minimum required ICC
minimum inï¬uence by VCC
minimum required ICC
minimum inï¬uence by VCC
replace R2 by C3 with a typical value of 35 pF
C1
56 pF
56 pF
56 pF
47 pF
47 pF
47 pF
47 pF
C2
20 pF
10 pF
10 pF
5 pF
5 pF
5 pF
5 pF
80
input
capacitance
(pF)
(1)
60
(2)
40
(3)
20
mna054
0
0
2
4
6 VI (V) 8
(1) VCC = 2.0 V.
(2) VCC = 4.5 V.
(3) VCC = 6.0 V.
Fig 13. Typical input capacitance as a function of the input voltage
74HC1GU04_5
Product data sheet
Rev. 05 â 10 July 2007
© NXP B.V. 2007. All rights reserved.
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