BU2050F,BU2092F,BU2092FV,BU2099FV,BD7851FP,BU2152FS
●Switching
characteristics (Unless otherwise specified, V
DD
=4.5 to 5.5V, Ta=25℃)
Limit
Parameter
Symbol
Unit
Min.
Typ.
Max.
Set up time (DATA-CLK)
Hold time (DATA-CLK)
Set up time
( STB
CLK)
Hold time
( STB
CLK)
Propagation
( CLR
P1
�½�
P8)
Propagation
( STB
P1
�½�
P8)
Propagation
( CLR
P1
�½�
P8)
Maximum clock frequency
t
SD
t
HD
t
SSTB
t
HSTB
t
PDPCK
t
PDPSTB
t
PDPCLR
f
MAX
20
20
30
30
-
-
-
5
-
-
-
-
-
-
-
-
-
-
-
-
100
80
80
-
ns
ns
ns
ns
ns
ns
ns
MHz
Technical Note
Condition
-
-
-
-
P1�½�P8 terminal load 20pF or less
P1�½�P8 terminal load 20pF or less
P1�½�P8 terminal load 20pF or less
-
●Switching
Time Test Waveform
f
MAX
1
CLK
t
SD
2
8
9
10
11
12
DATA
STB
t
HD
t
HSTB
t
SSTB
CLR
P8
P1
t
PDPSTB
t
PDPCLR
Fig. 3
t
PDPCK
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
8/24
2009.06 - Rev.A
ROHM [ ROHM ]
