参数资料
型号: IDT71256L35PI
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: SRAM
英文描述: 32K X 8 STANDARD SRAM, 35 ns, PDIP28
封装: 0.600 INCH, PLASTIC, DIP-28
文件页数: 6/10页
文件大小: 108K
代理商: IDT71256L35PI
6.42
IDT71256S/L
CMOS Static RAM 256K (32K x 8-Bit)
Military, Commercial, and Industrial Temperature Ranges
5
NO
T RECOMMENDED
FOR
NEW
DESIGNS
AC Electrical Characteristics (VCC = 5.0V ± 10%, All Temperature Ranges)
Low VCC Data Retention Waveform
2946 drw 06
DATA
RETENTION
MODE
4.5V
VDR
≥ 2V
VIH
tR
tCDR
VCC
CS
VDR
NOTES:
1. 0° to +70°C temperature range only.
2. This parameter is guaranteed by device characterization, but is not production tested.
3. –55°C to +125°C temperature range only.
Symbol
Parameter
71256L20(1)
71256S25
71256L25
71256S35
71256L35
71256S45
(3)
71256L45(3)
Unit
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Read Cycle
tRC
Read Cycle Time
20
____
25
____
35
____
45
____
ns
tAA
Address Access Time
____
20
____
25
____
35
____
45
ns
tACS
Chip Select Access Time
____
20
____
25
____
35
____
45
ns
tCLZ(2)
Chip Select to Output in Low-Z
5
____
5
____
5
____
5
____
ns
tCHZ(2)
Chip Desele ct to Output in High-Z
____
10
____
11
____
15
____
20
ns
tOE
Output Enable to Output Valid
____
10
____
11
____
15
____
20
ns
tOLZ(2)
Output Enab le to Output in Low-Z
2
____
2
____
2
____
0
____
ns
tOHZ(2)
Output Disab le to Output in High-Z
2
8
2
10
2
15
____
20
ns
tOH
Output Hold from Address Change
5
____
5
____
5
____
5
____
ns
Write Cycle
tWC
Write Cycle Time
20
____
25
____
35
____
45
____
ns
tCW
Chip Select to End-of-Write
15
____
20
____
30
____
40
____
ns
tAW
Address Valid to End-of-Write
15
____
20
____
30
____
40
____
ns
tAS
Address Set-up Time
0
____
0
____
0
____
0
____
ns
tWP
Write Pulse Width
15
____
20
____
30
____
35
____
ns
tWR
Write Recovery Time
0
____
0
____
0
____
0
____
ns
tDW
Data to Write Time Overlap
11
____
13
____
15
____
20
____
ns
tWHZ(2)
Write Enab le to Output in High-Z
____
10
____
11
____
15
____
20
ns
tDH
Data Hold from Write Time
0
____
0
____
0
____
0
____
ns
tOW(2)
Output Active from End-of-Write
5
____
5
____
5
____
5
____
ns
2946 tbl 12
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