INTRODUCTION
The UT9Q512K32E RadTol product is a high-performance 2M byte (16Mbit) CMOS static RAM multi-chip module (MCM), organized as four individual 524,288 x 8 bit SRAMs with a common output enable. Memory expansion is provided by an active LOW chip enable (En), an active LOW output enable (G), and three-state drivers. This device has a power-down feature that reduces power consumption by more than 90% when deselected.

FEATURES
❐ 25ns maximum (5 volt supply) address access time
❐ Asynchronous operation for compatible with industry standard 512K x 8 SRAMs
❐ TTL compatible inputs and output levels, three-state bidirectional data bus
❐ Operational environment:
   - Total dose: 50 krads(Si)
   - SEL Immune >110 MeV-cm2/mg
   - LETTH(0.25) = >52 MeV-cm2/mg
   - Saturated Cross Section (cm2) per bit, 2.8E-8
      - <1.1E-9 errors/bit-day, Adams 90% geosynchronous heavy ion
❐ Packaging:
   - 68-lead dual cavity ceramic quad flatpack (CQFP) (11.0 grams)
❐ Standard Microcircuit Drawing 5962-01511
   - QML Q and Vcompliant part