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产品信息
HEF4069UBT
HEF4069UBT
HEF4069UBT
HEF4069UBT
DESCRIPTION
The HEF4069UB is a general purpose hex inverter. Each
of the six inverters is a single stage.
HEF4069UBP(N): 14-lead DIL; plastic
(SOT27-1)
HEF4069UBD(F): 14-lead DIL; ceramic (cerdip)
(SOT73)
HEF4069UBT(D): 14-lead SO; plastic
(SOT108-1)
( ): Package Designator North America
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.
制造商:NXP
产品种类:变换器
安装风格:SMD/SMT
封装 / 箱体:SO-14
商标:NXP Semiconductors
产品类型:Inverters
子类别:Logic ICs
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
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.