PARADIGM PDM31098SA20SOITY, PDM31098SA20SOTR, PDM31098SA20SOTY, PDM31098SA8SOTR, PDM31098SA8SOTY Datasheet
...
Rev. 1.3 - 5/27/98 1
PRELIMINARY
1
2
3
4
5
6
7
8
9
10
11
12
4 Megabit 3.3V Static RAM
1Mx 4-Bit
Features
n
High-speed access times
Com’l: 8, 10 12, 15, and 20 ns
Ind’l.: 12, 15, 20 ns
n
Low power operation (typical)
- PDM31098SA
Active: 300 mW
Standby: 25 mW
n
Single +3.3V (
±
0.3V) power supply
n
TTL-compatible inputs and outputs
n
Packages
Plastic SOJ (400 mil) - SO
Description
The PDM31098 is a high-performance CMOS static
RAMs organized as 1,048,576 x 4 bits. Writing is
accomplished when the write enable (WE
) and chip
enable CE
inputs are both LOW. Reading is
accomplished when WE
remains HIGH and OE and
CE
are both LOW.
The PDM31098 operates from a single +3.3V power
supply and all the inputs and outputs are fully TTLcompatible.
The PDM31098 is available in a 32-pin 400-mil plastic SOJ package.
PDM31098
A
•
•
•
•
•
A
0
19
I/O
•
•
I/O
0
7
•
•
•
•
•
•
Addresses
Decoder Memory
Matrix
Input
Data
Control
Column I/O
•••••
•
•
•
CE
WE
OE
Functional Block Diagram
PRELIMINARY
PDM31098
2 Rev. 1.3 -5/27/98
Absolute Maximum Ratings
(1)
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.
2. Appropriate thermal calculations should be performed in all cases and specifically for
those where the chosen package has a large thermal resistance (e.g., TSOP). The calculation should be of the form
: T
j
= T
a
+ P * θ
ja
where T
a
is the ambient temperature, P
is average operating power and θ
ja
the thermal resistance of the package. For this
product, use the following θ
ja
value:
SOJ: 59
o
C/W
TSOP : 90
o
C/W
Symbol Rating Com’l. Ind. Unit
V
TERM
Terminal Voltage with Respect to V
SS
–0.5 to +4.6 –0.5 to +4.6 V
T
BIAS
Temperature Under Bias –55 to +125 –65 to +135
°
C
T
STG
Storage Temperature –55 to +125 –65 to +150
°
C
P
T
Power Dissipation 1.0 1.0 W
I
OUT
DC Output Current 50 50 mA
T
j
Maximum Junction Temperature
(2)
125 145
°
C
Pin Configuration
T ruth T able
(1)
NOTE: 1. H = VIH, L = VIL, X = DON’T CARE
OE WE CE I/O MODE
X X H Hi-Z Standby
X X X Hi-Z Standby
LHLD
OUT
Read
XLLD
IN
Write
H H L Hi-Z Output Disable
Name Description
A19-A0 Address Inputs
I/O3-I/O0 Data Inputs/Outputs
OE
Output Enable Input
WE
Write Enable Input
CE
Chip Enable Inputs
NC No Connect
V
CC
Power (+3.3V)
V
SS
Ground
1
2
3
4
5
6
7
8
9
10
11
12
15
16
22
23
24
25
26
27
A0
A1
A2
A3
A4
CE
I/O0
Vcc
Vss
I/O1
WE
A5
A6
A7
A8
A9
A19
A18
A17
A16
A15
OE
I/O3
Vss
Vcc
I/O2
A14
A13
A12
A11
A10
NC
13
14
28
29
30
31
32
17
18
19
21
20
SOJ
PRELIMINARY
PDM31098
Rev. 1.3 - 5/27/98 3
1
2
3
4
5
6
7
8
9
10
11
12
DC Electrical Characteristics
(V
CC
= 3.3V, ± 0.3V)
NOTE:1.V
IL
(min) = –3.0V for pulse width less than 20 ns
Power Supply Characteristics
SHADED AREA = PRELIMINARY DATA
NOTES: All values are maximum guaranteed values.
Capacitance
(1)
(T
A
= +25 ° C, f = 1.0 MHz)
NOTE:1. This parameter is determined by device characterization but is not production tested.
Symbol Parameter Test Conditions Min. Max. Unit
I
LI
Input Leakage Current V
CC
= Max., V
IN
= V
SS
to V
CC
–5 5
µ
A
I
LO
Output Leakage Current V
CC
= Max.,
CE
= V
IH
V
OUT
= V
SS
to V
CC
–5 5
µ
A
V
IL
Input Low Voltage –0.3
(1)
0.8 V
V
IH
Input High Voltage 2.2 Vcc+0.3 V
V
OL
Output Low Voltage I
OL
= 8 mA, V
CC
= Min. — 0.4 V
V
OH
Output High Voltage I
OH
= –4 mA, V
CC
= Min. 2.4 — V
-8 -10 -12 -15 -20
Symbol Parameter
Com’l Com’l Com’l Ind. Com’l Ind. Com’l Ind. Unit
I
CC
Operating Current
CE
= V
IL
190 175 165 175 155 165 145 155 mA
f = f
MAX
= 1/t
RC
V
CC
= Max.
I
OUT
= 0 mA
I
SB
Standby Current
CE
= V
IH
50 45 40 45 35 40 30 35 mA
f = f
MAX
= 1/t
RC
V
CC
= Max.
I
SB1
Full Standby Current
CE
≥ V
CC
– 0.2V
10 10 10 10 10 15 10 15 mA
f = 0
V
CC
= Max.,
V
IN
≥
V
CC
– 0.2V or ≤ 0.2V
Symbol Parameter Max. Unit
C
IN
Input Capacitance 8 pF
C
OUT
Output Capacitance 8 pF
Loading...