Datasheet

DS1243Y
8 of 14
MEMORY AC ELECTRICAL CHARACTERISTICS
(V
CC
= 5.0V ±10%, T
A
= 0°C to +70°C.)
PARAMETER SYMBOL
DS1243Y-120
UNITS NOTES
MIN
MAX
Read Cycle Time
t
RC
120
ns
Access Time
t
ACC
120
ns
OE
to Output Valid
t
OE
60 ns
CE
to Output Valid
t
CO
120
ns
OE
or
CE
to Output
Active
t
COE
5 ns 5
Output High-Z from
Deselection
t
OD
40 ns 5
Output Hold from
Address Change
t
oH
5 ns
Write Cycle Time
t
WC
120
ns
Write Pulse Width
t
WP
90
ns
3
Address Setup Time
t
AW
0
ns
Write Recovery Time
t
WR
20
ns
Output High-Z from
WE
t
ODW
40 ns 5
Output Active from
WE
t
OEW
5 ns 5
Data Setup Time
t
DS
50
ns
4
Data Hold Time from
WE
t
DH
20 ns 4
AC TEST CONDITIONS
Output Load: 50pF + 1TTL Gate
Input Pulse Levels: 0 to 3V
Timing Measurement Reference Levels
Input: 1.5V
Output: 1.5V
Input Pulse Rise and Fall Times: 5ns