BU2279F Datasheet, PDF (1/2 Pages) Rohm – Clock generator for PC

Multimedia ICs
Clock generator for PC
BU2279F
BU2279F
BU2279F is an IC that generates multiple clocks from the built-in PLL by inputting standard clocks from outside. This IC is
suitable for digital appliances.
54 MHz for video and 33.333MHz of digital system clock for CPU can be generated from widely used 13.5 MHz clock.
zApplications
DVD recorder, PC
zFeatures
1) Clock signals are generated by crystal oscillator.
2) SOP16 package.
3) Single power supply 3.3V.
4) No external components for PLL
zExternal dimensions (Units : mm)
10.0±0.2
16
9
1
8
1.27 _0.4±0.1
0.15±0.1
0.1
SOP16
zAbsolute maximum rating Ta=25°C
Parameter
Symbol
Limits
Unit
Impressed voltage
VDD
−0.5 ~ 7.0
V
Input voltage
VIN
Storage temperature range
Pd
−0.5 ~ VDD+0.5
V
500 ^∗
mW
Power dissipation
Tstg
−30 ~ 125
°C
∗ ^{Ratio above does not guarantee the operation.}
∗ ^{When the condition is over Ta=25 C, dissipatioin is decreased 5mWper 1 C.}
∗ ^{Radiation resistance design is not used.}
∗ ^{Power dissipation is.}
zRecommended operational conditions Ta=25°C
Parameter
Symbol Min. Typ. Max.
Unit
Power supply voltage
Voltage range of "H" input
Voltage range of "L" input
Operation temperature range
Maximum output load
VDD
3.0
–
3.6
V
VIH
0.8VDD
–
VDD
V
VIL
0
–
0.2VDD
V
Topr
−5
–
70
°C
CL
–
–
15
pF
1/2