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All data sheets are subject to change without notice
(619) 503-3300 - Fax: (619) 503-3301 - www.maxwell.com
16 Megabit (512K x 32-Bit)
89LV1632
©2005 Maxwell Technologies.
All rights reserved.
Low Voltage MCM SRAM
08.18.05 Rev 3
FEATURES:
• Four 512k x 8 SRAM die
RAD-PAK® technology hardens against natural space radia-
tion technology
Total dose hardness:
- > 100 krad (Si), depending upon space mission
Excellent Single Event Effects:
- SEL > 101MeV-cm
2
/mg
- SEU threshold = 3 MeV-cm
2
/mg
- SEU saturated cross section: 8E-9 cm
2
/bit
Package: 68-pin quad flat package
Completely static memory - no clock or timing strobe
required
Internal bypass capacitor
High-speed silicon-gate CMOS technology
3.3 V ± 10% power supply
Equal address and chip enable access times
Three-state outputs
All inputs and outputs are TTL compatible
DESCRIPTION:
Maxwell Technologies’ 89LV1632 high-performance 16 Mega-
bit Multi-Chip Module (MCM) Static Random Access Memory
features a greater than 100 krad(Si) total dose tolerance,
depending upon space mission. The four 4-Megabit SRAM die
and bypass capacitors are incorporated into a high-reliable
hermetic quad flat-pack ceramic package. With high-perfor-
mance silicon-gate CMOS technology, the 89LV1632 reduces
power consumption and eliminates the need for external
clocks or timing strobes. It is equipped with output enable
(OE) and four byte chip enable (CS1 - CS4) inputs to allow
greater system flexibility. When OE input is high, the output is
forced to high impedance.
Maxwell Technologies' patented RAD-PAK® packaging technol-
ogy incorporates radiation shielding in the microcircuit pack-
age. In a GEO orbit, RAD-PAK® packaging provides greater
than 100 krad(Si) total radiation dose tolerance, dependent
upon space mission. It eliminates the need for box shielding
while providing the required radiation shielding for a lifetime in
orbit or a space mission. This product is available in with
screening up to Maxwell Technologies self-defined Class K.
CS 1-4
MCM
OE, WE
Address
4Mb SRAM 4Mb SRAM 4Mb SRAM 4Mb SRAMPower Ground
I/O 0-7 I/O 8-15 I/O 16-23 I/O 24-31
16 Megabit (512k x 32-bit) SRAM MCM
Logic Diagram
89LV1632