74HC1GU04 Datasheet, PDF (7/12 Pages) NXP Semiconductors – Inverter

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 MΩ
16 kHz to 24.9 kHz
2.2 MΩ
25 kHz to 54.9 kHz
2.2 MΩ
55 kHz to 129.9 kHz
2.2 MΩ
130 kHz to 199.9 kHz
2.2 MΩ
200 kHz to 349.9 kHz
2.2 MΩ
350 kHz to 600 kHz
2.2 MΩ
R2
220 kΩ
220 kΩ
100 kΩ
100 kΩ
47 kΩ
47 kΩ
47 kΩ
Table 10. Optimum value for R2
Frequency
R2
Optimum for
3 kHz
6 kHz
10 kHz
14 kHz
>14 kHz
2.0 kΩ
8.0 kΩ
1.0 kΩ
4.7 kΩ
0.5 kΩ
2.0 kΩ
0.5 kΩ
1.0 kΩ
-
minimum required I_CC
minimum influence due to change in V_CC
minimum required I_CC
minimum influence by V_CC
minimum required I_CC
minimum influence by V_CC
minimum required I_CC
minimum influence by V_CC
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) V_CC = 2.0 V.
(2) V_CC = 4.5 V.
(3) V_CC = 6.0 V.
Fig 13. Typical input capacitance as a function of the input voltage
74HC1GU04_5
Product data sheet
Rev. 05 — 10 July 2007
© NXP B.V. 2007. All rights reserved.
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