HT6256

www.DataSheet4U.com HTMOSTM High Temperature Products HIGH TEMPERATURE 32K x 8 STATIC RAM FEATURES Specified Over -55 to +225°C Fabricated with HTMOS™ IV Silicon on Insulator (SOI) Read/Write Cycle Times ≤ 50 ns Support 20 MHz Clock Asynchronous Operation CMOS Input/Output Buffers Single 5 V ± 10% Power Supply Hermetic 28-Lead Ceramic DIP HT6256 APPLICATONS Down-Hole Oil Well Avionics Turbine Engine Control Industrial Process Control Nuclear Reactor Electric Power Conversion Heavy Duty Internal Combustion Engines GENERAL DESCRIPTION The 32K x 8 High Temperature Static RAM is a high performance 32,768 word x 8-bit static random access memory with industry-standard functionality. It is fabricated with Honeywell’s HTMOS™ technology, and is designed for use in systems operating in severe high temperature environments. The RAM requires only a single 5 V ± 10% power supply and has CMOS compatible I/O. Power consumption is typically less than 30 mW/MHz in operation, and less than 10 mW when de-selected. The RAM read operation is fully asynchronous, with an associated typical access time of 50 ns at 5 V. The RAM provides guaranteed performance over the full -55 to +225°C temperature range. Typically, parts will operate up to +300°C for a year, with derated performance. All parts are burned in at 250°C to eliminate infant mortality. PACKAGE PINOUT A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 ...