Manual

DS1249Y/AB
021497 4/9
(V
CC
=5V ± 5% for DS1249AB)
AC ELECTRICAL CHARACTERISTICS (t
A
: See Note 10) (V
CC
=5V ±10% for DS1249Y)
PARAMETER
SYMBOL
DS1249AB–70
DS1249Y–70
DS1249AB–100
DS1249Y–100
UNITS
NOTES
PARAMETER SYMBOL MIN MAX MIN MAX UNITS NOTES
Read Cycle Time t
RC
70 100 ns
Access Time t
ACC
70 100 ns
OE to Output Valid t
OE
35 50 ns
CE to Output Valid t
CO
70 100 ns
OE or CE to Output Active t
COE
5 5 ns 5
Output High–Z from Deselection t
OD
25 35 ns 5
Output Hold from Address
Change
t
OH
5 5 ns
Write Cycle Time t
WC
70 100 ns
Write Pulse Width t
WP
55 75 ns 3
Address Setup Time t
AW
0 0 ns
Write Recovery Time t
WR1
t
WR2
5
15
5
15
ns
ns
12
13
Output High–Z from WE t
ODW
25 35 ns 5
Output Active from WE t
OEW
5 5 ns 5
Data Setup Time t
DS
30 40 ns 4
Data Hold Time t
DH1
t
DH2
0
10
0
10
ns
ns
12
13