
Technical Note
2/21
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2009.04 - Rev.A
2009 ROHM Co., Ltd. All rights reserved.
BU3071HFV,BU3072HFV,BU3073HFV,BU3076HFV,BU7322HFV,BU7325HFV
●Electrical Characteristics
BU3071HFV(Ta=25℃, VDD=3.3V,Crystal frequency=28.6363MHz, unless otherwise specified.)
Parameter
Symbol
Limits
Unit
Conditions
Min.
Typ.
Max.
Output H voltage
VOH
2.8
-
V
IOH=-4.0mA
Output L voltage
VOL
-
0.5
V
IOL=4.0mA
Consumption current 1
IDD1
-
10
15
mA
OE=H, at no load
Consumption current 2
IDD2
-
1
1.3
mA
OE=L
Output frequency
-
54.0000
-
MHz
IN*264/35/4
The following parameters represent design guaranteed performance.
Duty
45
50
55
%
Measured at a voltage of 1/2 of VDD
Period-Jitter 1
σ
PJsSD
-
50
-
psec
※1
Period-Jitter MIN-MAX
PJsABS
-
300
-
psec
※2
Rise time
tr
-
2.5
-
nsec
Period of transition time required for the
output to reach 80% from 20% of VDD.
Provided with 15pF output load.
Fall time
tf
-
2.5
-
nsec
Period of transition time required for the
output to reach 20% from 80% of VDD.
Provided with 15pF output load.
Output Lock time
tLOCK
-
1
msec
※3
Note) The output frequency is determined by the arithmetic (frequency division) expression of a frequency input to IN.
If the input frequency is set to 28.6363MHz, the output frequency will be as listed above.
BU3072HFV(Ta=25℃, VDD=3.3V, Crystal frequency=48.0000MHz, unless otherwise specified.)
Parameter
Symbol
Limits
Unit
Conditions
Min.
Typ.
Max.
Output H voltage
VOH
2.8
-
V
IOH=-4.0mA
Output L voltage
VOL
-
0.5
V
IOL=4.0mA
Consumption current 1
IDD1
-
11
16
mA
PD=H, at no load
Consumption current 2
IDD2
-
5
A
PD=L
Output frequency
CLK_27
-
27.0000
-
MHz
SEL=L, IN*18/8/4
CLK_36
-
36.0000
-
MHz
SEL=H, IN*24/8/4
The following parameters represent design guaranteed performance.
Duty
45
50
55
%
Measured at a voltage of 1/2 of VDD
Period-Jitter 1
σ
PJsSD
-
35
-
psec
※1
Long-Term-Jitter
MIN-MAX
LTJsABS
-
0.9
1.5
nsec
MIN-MAX of long-term jitter
(100 sec from trigger)
Rise time
tr
-
2.5
-
nsec
Period of transition time required for the
output to reach 80% from 20% of VDD.
Provided with 15pF output load.
Fall time
tf
-
2.5
-
nsec
Period of transition time required for the
output to reach 20% from 80% of VDD.
Provided with 15pF output load.
Output Lock time
tLOCK
-
1
msec
※3
Note) The output frequency is determined by the arithmetic (frequency division) expression of a frequency input to IN.
If the input frequency is set to 48.0000MHz, the output frequency will be as listed above.