ACCESS MODE:  FAST PAGE

ACCESS TIME-MAX:  70 NS

ADDITIONAL FEATURE:  RAS ONLY; CAS BEFORE RAS REFRESH

JESD-30 CODE:  R-PDSO-J40

LENGTH:  25.8 MM

MANUFACTURER:  HITACHI LTD

MANUFACTURER PART NUMBER:  HM514280AJ-7

MEMORY DENSITY:  4.7186 MBIT

MEMORY IC TYPE:  FAST PAGE DRAM

MEMORY WIDTH:  18

NUMBER OF FUNCTIONS:  1

NUMBER OF PORTS:  1

NUMBER OF TERMINALS:  40

NUMBER OF WORDS:  262.144 K

NUMBER OF WORDS CODE:  256000

OPERATING MODE:  ASYNCHRONOUS

OPERATING TEMPERATURE-MAX:  70 °C

OPERATING TEMPERATURE-MIN:  0 °C

ORGANIZATION:  256KX18

OUTPUT CHARACTERISTICS:  3-STATE

PACKAGE BODY MATERIAL:  PLASTIC/EPOXY

PACKAGE CODE:  SOJ

PACKAGE DESCRIPTION:  SOJ,

PACKAGE SHAPE:  RECTANGULAR

PACKAGE STYLE:  SMALL OUTLINE

PART PACKAGE CODE:  SOJ

PIN COUNT:  40

QUALIFICATION STATUS:  NOT QUALIFIED

REFRESH CYCLES:  512

SEATED HEIGHT-MAX:  3.76 MM

SUPPLY VOLTAGE-MAX (VSUP):  5.5 V

SUPPLY VOLTAGE-MIN (VSUP):  4.5 V

SUPPLY VOLTAGE-NOM (VSUP):  5 V

SURFACE MOUNT:  YES

TECHNOLOGY:  CMOS

TEMPERATURE GRADE:  COMMERCIAL

TERMINAL FORM:  J BEND

TERMINAL PITCH:  1.27 MM

TERMINAL POSITION:  DUAL

WIDTH:  10.16 MM