
Technical Note
BU4015B,BU4015BF,BU4021B,BU4021BF,
BU4094BC,BU4094BCF,BU4094BCFV,BU4538B,BU4028B
8/17
www.rohm.com
2009.06 - Rev.A
2009 ROHM Co., Ltd. All rights reserved.
●Electrical Characteristics Curves(BU4015B)
0
10
20
30
40
50
0
5
10
15
20
Output Voltage [V]
O
u
tput
S
ink
C
u
rr
ent
[mA
]
0
10
20
30
40
50
0
5
10
15
20
Output Voltage [V]
O
utput
S
ource
C
u
rrent
[mA
]
0
25
50
75
100
125
150
175
200
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
M
ini
m
u
m
R
e
set
Pul
s
e
W
idth
[ns]
0
100
200
300
400
500
600
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
C
LK
→
Q)
[ns]
0
100
200
300
400
500
600
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
R
ESET
→
Q)
[ns]
0
100
200
300
400
500
600
700
800
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
R
ESET
→
Q)
[ns]
0
25
50
75
100
125
150
175
200
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Setup
Ti
m
e
(
Q
→
CLK)
[ns]
0
20
40
60
80
100
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Ho
ld
Time
(CL
K
→
Q)
[ns]
0
100
200
300
400
500
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
M
ini
m
u
m
C
lock
Pul
s
e
W
idth
[ns]
0
100
200
300
400
500
600
-50
-25
0
25
50
75
100
Ambient Temperature [
℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
C
LK
→
Q)
[ns]
Fig.6 Propagation delay tPHL
RESET→Q
Fig.3 Propagation delay tPLH
CLK→Q
Fig.7Set up time tsu
Q
→CLK
Fig.8 Hold time th
CLK
→Q
Fig.9 Minimum CLK pulse width
Fig.4 Propagation delay tPHL
CLK→Q
Fig.5 Propagation delay tPLH
RESET→Q
VDD=3[V]
VDD=5[V]
VDD=10[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
-40[℃]
25[℃]
85[℃]
VDD=5[V]
VDD=16[V]
VDD=10[V]
Fig.10Minimum RESET
pulse width
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=3[V]
VDD=5[V]
VDD=10[V]
VDD=16[V]
-40[℃]
25[℃]
85[℃]
Fig.2 Output sink
current-voltage
Fig.1 Output source
current-voltage
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
○Switching characteristics
VDD=10[V]
VDD=15[V]
VDD=5[V]
VDD=10[V]
VDD=15[V]
VDD=5[V]
90%
50%
10%
20[ns]
D (入力データ)
90%
50%
10%
tsu
CLOCK
20[ns]
90%
50%
10%
tPLH
tPHL
tTLH
tTHL
Q0 (出力データ)
tWH
tWL
20[ns]
th
VDD
GND(VSS)
VDD
GND(VSS)
VOH
VOL
Operating Temperature Range
VDD=10[V]
VDD=16[V]
Operating Temperature Range
[BU4015B/F]
D (Input data)
Q0 (Output data)