71256S/L
CMOS Static RAM 256K (32K x 8-Bit)
Military, Commercial, and Industrial Temperature Ranges
PinConfigurations(1)
Truth Table(1)
WE
CS
OE
I/O
Function
1
V
WE
CC
28
27
26
A
A
A
A
A
A
A
A
A
14
12
X
H
X
High-Z
High-Z
High-Z
Standby (ISB)
2
3
7
6
5
4
3
2
1
0
0
1
2
A13
X
V
HC
X
Standby (ISB1)
4
25
A8
H
L
H
L
Output Disabled
Read Data
71256S/L 24
5
A
9
6
SD28
CD28
PJG28
A11
23
22
H
L
DOUT
7
OE
L
L
X
DIN
Write Data
A10
8
21
20
2946 tbl 02
9
CS
NOTE:
10
11
12
13
14
A
19
18
I/O
I/O
I/O
I/O
I/O
7
1. H = VIH, L = VIL, X = Don't care.
I/O
I/O
I/O
6
5
4
3
17
16
15
GND
AbsoluteMaximumRatings(1)
2946 drw 02
Symbol
Rating
Com'l.
Ind.
Mil.
Unit
DIP/SOJ
V
TERM
Terminal Voltage -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0
with Respect
to GND
V
Top View
NOTE:
1. This text does not indicate orientation of actual part-marking.
Operating
Te mp e rature
0 to +70
-40 to +85 -55 to +125 oC
TA
Te mp e rature
Under Bias
-55 to +125 -55 to +125 -65 to +135 oC
-55 to +125 -55 to +125 -65 to +150 oC
T
BIAS
PinDescriptions
Storage
Te mp e rature
TSTG
Name
Description
Address Inputs
Data Input/Output
Chip Select
Write Enable
Output Enable
Ground
A0 - A14
Power
Dissipation
P
T
1.0
50
1.0
50
1.0
50
W
I/O0
- I/O
7
IOUT
DC Output Current
mA
CS
2946 tbl 03
NOTE:
WE
OE
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.
GND
V
CC
Power
2946 tbl 01
Capacitance (TA = +25°C, f = 1.0MHz)
Symbol
Parameter(1)
Input Capacitance
I/O Capacitance
Conditions
IN = 0V
OUT = 0V
Max.
Unit
CIN
V
11
pF
CI/O
V
11
pF
2946 tbl 04
NOTE:
1. This parameter is determined by device characterization, but is not production
tested.
2
Aug.06.20