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74HC2GU04 Datasheet, PDF (10/15 Pages) NXP Semiconductors – Dual unbuffered inverter | |||
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NXP Semiconductors
74HC2GU04
Dual unbuffered inverter
R1
U04
R2
C1
C2
out
mna053
Test data is given in Table 11 and Table 12.
C1 = 47 pF.
C2 = 22 pF.
R1 = 1 M⦠to 10 Mâ¦.
R2 optimum value depends on the frequency and required stability against changes in VCC or average minimum ICC
(ICC = 2 mA at VCC = 3.0 V and f = 1 MHz).
Fig 13. Crystal oscillator application
Table 11. External components for resonator (f < 1 MHz)
Frequency
R1
R2
10 kHz to 15.9 kHz
2.2 Mâ¦
220 kâ¦
16 kHz to 24.9 kHz
2.2 Mâ¦
220 kâ¦
25 kHz to 54.9 kHz
2.2 Mâ¦
100 kâ¦
55 kHz to 129.9 kHz
2.2 Mâ¦
100 kâ¦
130 kHz to 199.9 kHz
2.2 Mâ¦
47 kâ¦
200 kHz to 349.9 kHz
2.2 Mâ¦
47 kâ¦
350 kHz to 600 kHz
2.2 Mâ¦
47 kâ¦
C1
56 pF
56 pF
56 pF
47 pF
47 pF
47 pF
47 pF
Table 12. Optimum value for R2
Frequency
R2
Optimum
3 kHz
6 kHz
10 kHz
14 kHz
2.0 kâ¦
8.0 kâ¦
1.0 kâ¦
4.7 kâ¦
0.5 kâ¦
2.0 kâ¦
0.5 kâ¦
2.0 kâ¦
for minimum required ICC
for minimum inï¬uence due to change in VCC
or minimum required ICC
or minimum inï¬uence by VCC
or minimum required ICC
or minimum inï¬uence by VCC
or minimum required ICC
or minimum inï¬uence by VCC
> 14 kHz
replace R2 by C3 = 35 pF (typical)
C2
20 pF
10 pF
10 pF
5 pF
5 pF
5 pF
5 pF
74HC2GU04_1
Product data sheet
Rev. 01 â 6 October 2006
© NXP B.V. 2006. All rights reserved.
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