IDT71256L IDT [Integrated Device Technology], IDT71256L Datasheet - Page 5

• Manufacturer Part Number: IDT71256L
• Description: CMOS STATIC RAM 256K (32K x 8-BIT)
• Manufacturer: IDT [Integrated Device Technology]

IDT71256S/L
CMOS STATIC RAM 256K (32K x 8-BIT)
LOW V
AC ELECTRICAL CHARACTERISTICS
NOTES:
1. 0 to +70 C temperature range only.
2. This parameter guaranteed by device characterization, but is not production tested.
3. –55 to +125 C temperature range only.
Symbol
Read Cycle
t
t
t
t
t
t
t
t
t
Write Cycle
t
t
t
t
t
t
t
t
t
t
RC
AA
ACS
CLZ
CHZ
OE
OLZ
OHZ
OH
WC
CW
AW
AS
WP
WR
DW
WHZ
DH
OW
(2)
(2)
(2)
(2)
(2)
(2)
CC
Read Cycle Time
Address Access Time
Chip Select Access Time
Chip Select to Output in Low-Z
Chip Deselect to Output in High-Z
Output Enable to Output Valid
Output Enable to Output in Low-Z
Output Disable to Output in High-Z
Output Hold from Address Change
Write Cycle Time
Chip Select to End-of-Write
Address Valid to End-of-Write
Address Set-up Time
Write Pulse Width
Write Recovery Time
Data to Write Time Overlap
Write Enable to Output in High-Z
Data Hold from Write Time
Output Active from End-of-Write
DATA RETENTION WAVEFORM
V
CS
CC
Parameter
t
CDR
4.5V
V
IH
(V
Min.
71256L20
20
20
15
15
15
11
—
—
—
—
—
5
2
2
5
0
0
0
5
CC
= 5.0V
RETENTION
Max.
20
20
10
10
10
—
—
—
—
—
—
—
—
—
—
—
—
—
8
V
(1)
MODE
7.2
DATA
DR
V
DR
10%, All Temperature Ranges)
Min. Max.
71256S25
2V
71256L25
25
25
20
20
20
—
—
—
—
—
13
5
2
2
5
0
0
0
5
25
25
11
11
10
11
—
—
—
—
—
—
—
—
—
—
—
—
—
MILITARY AND COMMERCIAL TEMPERATURE RANGES
71256S30
71256L30
Min.
30
—
—
—
—
30
25
25
25
14
—
5
2
2
5
0
0
0
5
V
4.5V
IH
Max.
30
30
15
13
12
15
—
—
—
—
—
—
—
—
—
—
—
—
—
(3)
(3)
t
R
Min.
71256S35
71256L35
35
35
30
30
30
15
—
—
—
—
—
5
2
2
5
0
0
0
5
2946 drw 06
Max.
15
15
—
35
35
—
15
—
15
—
—
—
—
—
—
—
—
—
—
Min. Max. Unit
71256S45
71256L45
45
45
40
40
35
20
—
—
—
—
—
—
5
0
5
0
0
0
5
—
45
45
—
20
20
—
20
—
—
—
—
—
—
—
—
20
—
—
2946 tbl 11
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5