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