33C408 Datasheet, PDF (1/12 Pages) Maxwell Technologies – 4 Megabit (512K x 8-Bit) CMOS SRAM

33C408
4 Megabit (512K x 8-Bit)
CMOS SRAM
Logic Diagram
FEATURES:
• RAD-PAK® 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/cm²
· - SEU_TH: = 3 MeV/mg/cm²
- SEU saturated cross section: 6E-9 cm²/bit
• Package:
- 32-Pin RAD-PAK® flat pack
- 32-Pin Non-RAD-PAK® flat pack
• Fast access time:
- 20, 25, 30 ns maximum times available
• Single 5V + 10% power supply
• Fully static operation
- No clock or refresh required
• Three state outputs
• TTL compatible inputs and outputs
• Low power:
- Standby: 60 mA (TTL); 10 mA (CMOS)
- Operation: 180 mA (20 ns); 170 mA (25 ns);
160 mA (30 ns)
DESCRIPTION:
Maxwell Technologies’ 33C408 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 RAD-PAK® packaging technology, the 33C408
realizes a high density, high performance, and low
power consumption. Its fully static design elimi-
nates the need for external clocks, while the
CMOS circuitry reduces power consumption and
provides higher reliability. The 33C408 is equipped
with eight common input/output lines, chip select
and output enable, allowing for greater system flex-
ibility and eliminating bus contention. The 33C408
features the same advanced 512K x 8-bit SRAM,
high-speed, and low-power demand as the com-
mercial counterpart.
Maxwell Technologies' patented RAD-PAK 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, RAD-PAK provides greater than 100
krad (Si) radiation dose tolerance. This product is
available with screening up to Class S.
04.16.02 REV 8
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All data sheets are subject to change without notice 1
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