SRAM AC Characteristics
(V
CC
= 5.0V, V
SS
= 0V, T
C
= -55°C to +125°C)
Read Cycle
Parameter
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Hold from Address Change
Output Enable to Output Valid
Chip Select to Output in Low Z *
Output Enable to Output in Low Z *
Chip Deselect to Output in High Z *
Output Disable to Output in High Z *
* Parameters guaranteed by design but not tested
Symbol
t
RC
t
AA
t
ACE
t
OH
t
OE
t
CLZ
t
OLZ
t
CHZ
t
OHZ
3
0
12
12
0
15
3
0
20
20
–025
Min Max
25
25
25
0
20
–035
Min Max
35
35
35
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
Write Cycle
Parameter
Write Cycle Time
Chip Select to End of Write
Address Valid to End of Write
Data Valid to End of Write
Write Pulse Width
Address Setup Time
Output Active from End of Write *
Write to Output in High Z *
Data Hold from Write Time
Address Hold Time
* Parameters guaranteed by design but not tested
Symbol
t
WC
t
CW
t
AW
t
DW
t
WP
t
AS
t
OW
t
WHZ
t
DH
t
AH
0
0
–025
Min Max
25
20
20
15
20
0
0
10
0
0
–035
Min Max
35
25
25
20
25
0
0
20
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SRAM Truth Table
Mode
Standby
Read
Output Disable
Write
SCE
H
L
L
L
OE
X
L
H
X
SWE
X
H
H
L
Data I/O
High Z
Data Out
High Z
Data In
Power
Standby
Active
Active
Active
Aeroflex Circuit Technology
3
SCD3851 REV A 5/21/98
Plainview NY (516) 694-6700
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
