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PDF HEF4069UB Data sheet ( Hoja de datos )
| Número de pieza | HEF4069UB | |
| Descripción | Hex inverter | |
| Fabricantes | Philips | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
• The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF4069UB
gates
Hex inverter
Product specification
File under Integrated Circuits, IC04
January 1995
1 page  
Philips Semiconductors
Hex inverter
Product specification
HEF4069UB
gates
APPLICATION INFORMATION
Some examples of applications for the HEF4069UB are shown below.
In Fig.7 an astable relaxation oscillator is given. The oscillation frequency is mainly determined by R1C1, provided
R1 << R2 and R2C2 << R1C1.
(a)
(b)
The function of R2 is to minimize the influence of the forward voltage across
the protection diodes on the frequency; C2 is a stray (parasitic) capacitance.
The period Tp is given by Tp = T1 + T2, in which
T1 = R1C1 In --V----D----DV----S-+---T--V----S---T- and T2 = R1C1 In--2--V---V-D---D-D---D-–----–-V---V-S---ST----T- where
VST is the signal threshold level of the inverter. The period is fairly independent
of VDD, VST and temperature. The duty factor, however, is influenced by VST.
Fig.7 (a) Astable relaxation oscillator using two HEF4069UB inverters; the diodes may be BAW62; C2 is a
parasitic capacitance. (b) Waveforms at the points marked A, B, C and D in the circuit diagram.
January 1995
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet HEF4069UB.PDF ] | |
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