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Title: High performance static latches with complete single event upset immunity

Patent ·
OSTI ID:869264

An asymmetric response latch providing immunity to single event upset without loss of speed. The latch has cross-coupled inverters having a hardened logic state and a soft state, wherein the logic state of the first inverter can only be changed when the voltage on the coupling node of that inverter is low and the logic state of the second inverter can only be changed when the coupling of that inverter is high. One of more of the asymmetric response latches may be configured into a memory cell having complete immunity, which protects information rather than logic states.

Research Organization:
AT&T
DOE Contract Number:
AC04-76DP00789
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 5307142
OSTI ID:
869264
Country of Publication:
United States
Language:
English

References (4)

A proposed new structure for SEU immunity in SRAM employing drain resistance journal November 1987
Comparison of Analytical Models and Experimental Results for Single Event Upset in CMOS SRAMs journal January 1983
An SEU Tolerant Memory Cell Derived from Fundamental Studies of SEU Mechanisms in SRAM journal January 1987
An SEU-hardened CMOS data latch design journal January 1988