DS1245Y/AB
CAPACITANCE
PARAMETER
Input Capacitance
Input/Output Capacitance
SYMBOL
C
IN
C
I/O
MIN
TYP
5
5
MAX
10
10
(t
A
=25°C)
UNITS
pF
pF
NOTES
AC ELECTRICAL
CHARACTERISTICS
(V
CC
=5V
±=5%
for DS1245AB)
(t
A
: See Note 10) (V
CC
=5V
±=10%
for DS1245Y)
DS1245AB-70
DS1245Y-70
DS1245AB-85
DS1245Y-85
PARAMETER
Read Cycle Time
Access Time
OE
CE
OE
SYMBOL
t
RC
t
ACC
t
OE
t
CO
t
COE
t
OD
t
OH
t
WC
t
WP
t
AW
t
WR1
t
WR2
t
ODW
t
OEW
t
DS
t
DH1
t
DH2
MIN
70
MAX
70
35
70
MIN
85
MAX
85
45
85
UNITS
ns
ns
ns
ns
ns
NOTES
to Output Valid
to Output Valid
or
CE
to Output Active
5
25
5
70
55
0
5
15
25
5
30
0
10
5
30
5
85
65
0
5
15
30
5
35
0
10
5
5
Output High Z from Deselection
Output Hold from Address Change
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High Z from
WE
Output Active from
WE
Data Setup Time
Data Hold Time
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3
12
13
5
5
4
12
13
4 of 12
DALLAS [ DALLAS SEMICONDUCTOR ]
