7025E

Features:

• 8K x 16-bit dual port RAM
   - Stand Alone
   - Master Slave
• RAD-PAK® radiation-hardened against natural space radiation
• Total dose hardness:
   - > 100 krad (Si), depending upon space mission
• Excellent Single Event Effects:
   -SELTH LET = >100 MeV/mg/cm2
   -SEUTH LET = 7 MeV/mg/cm2
• Package:
   -84 Pin RAD-PAK® quad flat pack
• Separate upper byte and lower byte control for multiplexed
   bus compatibility
• High speed access time: 35/45 ns
• Expandable to 32 bits or more using master/slave select
   when cascading
• High speed CMOS technology
   -TTL compatible, single 5V power supply
   -Interrupt flag for port-to-port communication
   -On chip port arbitration logic
   -Asynchronous operation from either port


Pinout




Specifications

PARAMETER	SYMBOL	MIN	MAX	UNITS
Supply Voltage (Relative to VSS)	VCC	-0.3	7.0	V
Operating Temperature Range	TA	-55	125	°C
Input or Output Voltage Applied	--	GND -0.3V	VCC+ 0.3	V
Storage Temperature Range	TSTG	-65	150	°C

Description

Maxwell Technologies' 7025E Dual Port RAM High Speed CMOS® microcircuit features a greater than 100 krad (Si) total dose tolerance, depending upon space mission. The 7025E is designed to be used as a stand-alone 128k-bit Dual Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 32-bit or more word systems. This design results in full-speed, error-free operation without the need for additional discretelogic. The 7025E provides  two independent ports with separate control, address, and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory. An automatic power down feature controlled by CS permits the on-chip circuitry of each port to enter a very low standby power mode.

Maxwell Technologies' patented RAD-PAK® packaging technology incorporates radiation shielding in the microcircuit package. The 7025E eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission.  In a GEO orbit, RAD-PAK provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S.