BU7344HFV Datasheet, PDF (2/14 Pages) Rohm – Compact 1ch Clock Generators for Digital Cameras

BU7344HFV,BU7345HFV,BU7346GUL
●Absolute maximum ratings (Ta=25 ℃)
Parameter
Symbol
Ratings
Unit
Supply voltage
VDD
-0.3 ~ 4.0
V
Input voltage
VIN
-0.3 ~ VDD+0.3
V
Storage temperature range
Tstg
-55 ~ 125
℃
Power dissipation
410(BU7344HFV,BU7345HFV)^*1
Pd
mW
460(BU7346GUL)^*2
*1 Mounted on 70mm * 70mm * 1.6mm Glass-epoxy PCB. Derating: 4.1mW / ℃ at Ta > 25°C
*2 Mounted on 50mm * 58mm * 1.75mm Glass-epoxy PCB. Derating: 4.6mW / ℃ at Ta > 25°C
* Operating is not guaranteed.
* The radiation-resistance design is not carried out.
●Operating conditions
Parameter
Supply voltage
Input H voltage
Input L voltage
Operating temperature
Output load
Symbol
VDD
VINH
VINL
Topr
CL
Ratings
Unit
2.7 ~ 3.6
V
0.8VDD ~ VDD
V
0.0 ~ 0.2VDD
V
-5 ~ 75
℃
15(MAX.)
pF
Technical Note
●Electrical characteristics
○BU7344HFV (Ta=25 ℃, VDD=3.3V, Crystal frequency=27.0000MHz, unless otherwise specified.)
Parameter
Limits
Symbol
Unit
Min.
Typ.
Max.
Conditions
Output H voltage
VOH
2.8
-
VDD
V IOH = -3.0mA
Output L voltage
VOL
0.0
-
0.5
V IOL = 3.0mA
Standby current
Consumption current 1
Consumption current 2
Pull-down load
Output frequency
OUT1
IDDst
-
-
1.0
μA OE = L
IDD1
-
4.0
5.2
mA
40.5000MHz output
SEL = L
IDD2
-
3.5
4.6
mA
36.0000MHz output
SEL = H
Rpd
50
100
200
kΩ input PIN, pull-down load value
CLK40.5
40.5000
MHz IN*12/4/2, SEL = L
OUT2
CLK36
36.0000
MHz IN*8/3/2, SEL = H
* The output frequency is determined by the arithmetic (frequency division) expression of a frequency input to IN.
If the input frequency is set to 27.0000MHz, the output frequency will be as listed above.
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2/13
2011.01 - Rev.A