P
RELIMINARY
4 Megabit (512K x 8-Bit)
Low Voltage CMOS
33LV0408
33LV0408
Memory
Logic Diagram
F
EATURES
:
• R
AD
-P
AK
® Technology radiation-hardened
against natural space radiation
• 524,288 x 8 bit organization
· Total dose hardness:
- > 100 krad (Si), depending upon space mis-
sion
• Excellent Single Event Effect
·
- SEL
TH
: > 68 MeV/mg/cm
2
· - SEU
TH
: = 3 MeV/mg/cm
2
•
•
•
•
•
•
•
- SEU saturated cross section: 6E-9 cm
2
/bit
Package:
- 32-Pin R
AD
-P
AK
® flat pack
Fast access time:
- 15, 20, 25 ns maximum times available
Single 3.3 Volt power supply
Fully static operation
- No clock or refresh required
Three state outputs
TTL compatible inputs and outputs
Low power:
- Standby: 60 mA (TTL); 5 mA (CMOS)
D
ESCRIPTION
:
Maxwell Technologies’ 33LV0408 high-density 4
Megabit SRAM microcircuit features a greater than
100 krad (Si) total dose tolerance, depending upon
space mission. Using Maxwell’s radiation-hard-
ened R
AD
-P
AK
® packaging technology, the
33LV0408 realizes a high density, high perfor-
mance, and low power consumption. Its fully static
design eliminates the need for external clocks,
while the CMOS circuitry reduces power consump-
tion and provides higher reliability. The 33LV0408
is equipped with eight common input/output lines,
chip select and output enable, allowing for greater
system flexibility and eliminating bus contention.
The 33LV0408 features the same advanced 512K
x 8-bit SRAM, high-speed, and low-power demand
as the commercial counterpart.
Maxwell Technologies' patented R
AD
-P
AK
® packag-
ing technology incorporates radiation shielding in
the microcircuit package. It eliminates the need for
box shielding while providing the required radiation
shielding for a lifetime in orbit or space mission. In
a GEO orbit, R
AD
-P
AK
® provides greater than 100
krad (Si) radiation dose tolerance. This product is
available with screening up to Class S.
08.13.02 REV 1
All data sheets are subject to change without notice
1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
©2002 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
