MB81C78A Datasheet | Fujitsu Semiconductor Limited

April 1990 Edition 3.0 DATA SHEET FUJITSU MB81C78A-351-45 CMOS 64K-BIT HIGH-SPEED SRAM 8K Words x 8 Bits High-Speed CMOS Static Random Access Memory with Automatic Power Down The Fuj Hsu MB81C78A is a 8,192 words x 8 bits static random access memory fabricated with a CMOS process. The memory uses asynchronous circu Hry and may be maintained in any state for an indefinite period of time. All pins are TTL patible and a single +5 V power supply is required. A separate chip select (CS1) pin simplifies mu~ipackage systems design by perm Hing the selection of an individual package when outputs are OR-tied, and then automatically powering down the other deselected packages. PLASTIC PACKAGE DIP-28P-M04 .. The MB81 C78A offers low power dissipation, low cost, and high performance. - Organization: 8,192 words x 8 b Hs - Static operation: no clock or timing strobe required - Access time: t M = t ACS1 = 35 ns max. (MB81 C78A-35) t M = IAc S1 - 45 ns max. (MB81 C78A-45) - Low power consumption: 495 m W max. (Operating) 138 m W max. (Standby, TTL level) 83 m W max. (Standby, CMOS level) - Single +5 V power supply ±1 0% tolerance - TTL patible inputs and outputs o Three-state outputs w Hh OR-tie capac Hy - Chip select for simplified memory expansion, automatic power down - Electrostatic protection for all inputs and outputs - Standard 28-pin Plastic Package: Skinny DIP (300 mil) MB81C78A-xx PSK MB81C78A-xx PF MB81C78A-xx PJ - Standard 32-pad Ceramic Package: LCC (metal seal) MB81C78A-CV Absolute Maximum Ratings (See Note) Rating Symbol Value Unit Supply Voltage Vee -<l.5 to +7.0 Input Voltaae on any pin w Hh respect to NO Y'N -3.5 to...