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IDT71256SA Datasheet(PDF) 2 Page - Integrated Device Technology

Part No. IDT71256SA
Description  CMOS STATIC RAM 256K (32K x 8-BIT)
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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2
IDT71256SA
CMOS Static RAM 256K (32K x 8-Bit)
Commercial and Industrial Temperature Ranges
Absolute Maximum Ratings(1)
Pin Configurations
DIP/SOJ
Top View
RecommendedOperating
Temperature and Supply Voltage
Recommended DC Operating
Conditions
Truth Table(1,2)
TSOP
Top View
2948 drw 02a
22
23
24
25
26
27
28
1
2
3
4
5
7
6
21
20
19
18
17
16
15
14
13
12
11
10
9
8
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
SO28-8
OE
A11
A9
A8
A13
A14
A7
A6
A5
A4
A3
A12
WE
VCC
,
2948 drw 02
5
6
7
8
9
10
11
12
GND
1
2
3
4
24
23
22
21
20
19
18
17
SO28-5
P28-2
P28-1
13
14
28
27
26
25
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VCC
A14
WE
A13
A8
A10
A11
OE
A12
CS
I/O7
I/O6
I/O5
I/O4
I/O3
A9
16
15
,
NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS
may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect
reliability.
Symbol
Rating
Value
Unit
VCC
Supply Voltage
Relative to GND
-0.5 to +7.0
V
VTERM
Terminal Voltage
Relative to GND
-0.5 to VCC+0.5
V
TBIAS
Temperature Under Bias
-55 to +125
oC
TSTG
Storage Temperature
-55 to +125
oC
PT
Power Dissipation
1.0
W
IOUT
DC Output Current
50
mA
2948 tbl 02
NOTES:
1. H = VIH, L = VIL, x = Don't care.
2. VLC = 0.2V, VHC = VCC –0.2V.
3. Other inputs
≥VHC or ≤VLC.
CS
OE
WE
I/O
Function
LLH
DATAOUT
Read Data
LX
L
DATAIN
Write Data
L
H
H
High-Z
Outputs Disabled
H
X
X
High-Z
Deselecte d - Standby (ISB)
VHC(3)
X
X
High-Z
Deselecte d - Standby (ISB1)
2948 tbl 03
Grade
Temperature
GND
Vcc
Commercial
0OC to +70OC
0V
4.5V ± 5.5V
Industrial
-40OC to +85OC
0V
4.5V ± 5.5V
2948 tbl 01
NOTE:
1. VIL (min.) = –1.5V for pulse width less than 10ns, once per cycle.
Symbol
Parameter
Min.
Typ.
Max.
Unit
VCC
Supply Voltage
4.5
5.0
5.5
V
GND
Ground
0
0
0
V
VIH
Input High Voltage
2.2
____
VCC +0.5
V
VIL
Input Low Voltage
-0.5(1)
____
0.8
V
2948 tbl 04




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