Datasheet

DS1225AB/AD
4 of 9
(T
A
: See Note 10)
(V
CC
=5V ± 5% for DS1225AB)
AC ELECTRICAL CHARACTERISTICS (V
CC
=5V ± 10% for DS1225AD)
PARAMETER SYMBOL
DS1225AB-70
DS1225AD-70
UNITS NOTES
MIN
MAX
Read Cycle Time
t
RC
70
ns
Access Time
t
ACC
70
ns
OE
to Output Valid
t
OE
35
ns
CE
to Output Valid
t
CO
70
ns
OE
or
CE
to Output Active
t
COE
5
ns 5
Output High Z from Deselection
t
OD
25
ns
5
Output Hold from Address
Change
t
OH
5
ns
Write Cycle Time
t
WC
70
ns
Write Pulse Width
t
WP
55
ns
3
Address Setup Time
t
AW
0
ns
Write Recovery Time
t
WR1
t
WR2
0
10
ns
ns
12
13
Output High Z from
WE
t
ODW
25
ns 5
Output Active from
WE
t
OEW
5
ns 5
Data Setup Time
t
DS
30
ns
4
Data Hold Time
t
DH1
t
DH2
0
10
ns
ns
12
13