71256SA20TPG Datasheet, PDF (2/8 Pages) Integrated Device Technology – CMOS Static RAM 256K (32K x 8-Bit)

IDT71256SA
CMOS Static RAM 256K (32K x 8-Bit)
Pin Configurations
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
1
28
2
27
3
26
4
25
5
24
6
23
7 ^SO28-5 22
P28-2
8
21
9
20
10
19
11
18
12
17
13
16
14
15
VCC
WE
A13
A8
A9
A11
OE
A10
CS
I/O7
I/O6
I/O5
I/O4
I/O3
2948 drw 02
DIP/SOJ
Top View
Commercial and Industrial Temperature Ranges
Absolute Maximum Ratings⁽¹⁾
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
o_C
TSTG
Storage Temperature
-55 to +125
o_C
PT
Power Dissipation
1.0
W
IOUT
DC Output Current
50
mA
NOTE:
2948 tbl 02
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.
OE
22
A11
23
A9
24
A8
25
A13
26
WE
27
VCC
28
A14
1
A12
2
A7
3
A6
4
A5
5
A4
6
A3
7
SO28-8
TSOP
Top View
21 A10
20 CS
19 I/O7
18 I/O6
17 _I/O5
16 _I/O4
15 _I/O3
14 _GND
, ^{13 I/O2}
12 I/O1
11 I/O0
10 A0
9 _A1
8 _A2
2948 drw 02a
Truth Table^(1,2)
CS
OE
WE
I/O
Function
L
L
H
DATAOUT Read Data
L
X
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)
NOTES:
1. H = VIH, L = VIL, x = Don't care.
2. VLC = 0.2V, VHC = VCC –0.2V.
3. Other inputs ≥VHC or ≤VLC.
2948 tbl 03
Recommended Operating
Temperature and Supply Voltage
Grade
Temperature
GND
Vcc
Commercial
0^OC to +70^OC
0V
4.5V ± 5.5V
Industrial
-40^OC to +85^OC
0V
4.5V ± 5.5V
2948 tbl 01
Recommended DC Operating
Conditions
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
NOTE:
2948 tbl 04
1. VIL (min.) = –1.5V for pulse width less than 10ns, once per cycle.
2