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IDT71256L45TD

Description
Standard SRAM, 32KX8, 45ns, CMOS, CDIP28, 0.300 INCH, CERDIP-28
Categorystorage    storage   
File Size78KB,9 Pages
ManufacturerIDT (Integrated Device Technology)
Download Datasheet Parametric View All

IDT71256L45TD Overview

Standard SRAM, 32KX8, 45ns, CMOS, CDIP28, 0.300 INCH, CERDIP-28

IDT71256L45TD Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerIDT (Integrated Device Technology)
Parts packaging codeDIP
package instructionDIP,
Contacts28
Reach Compliance Codecompliant
ECCN codeEAR99
Maximum access time45 ns
JESD-30 codeR-GDIP-T28
JESD-609 codee0
length37.1475 mm
memory density262144 bit
Memory IC TypeSTANDARD SRAM
memory width8
Number of functions1
Number of ports1
Number of terminals28
word count32768 words
character code32000
Operating modeASYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize32KX8
Output characteristics3-STATE
ExportableYES
Package body materialCERAMIC, GLASS-SEALED
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Parallel/SerialPARALLEL
Peak Reflow Temperature (Celsius)225
Certification statusNot Qualified
Maximum seat height5.08 mm
Minimum standby current2 V
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTIN LEAD
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width7.62 mm
CMOS STATIC RAM
256K (32K x 8-BIT)
Integrated Device Technology, Inc.
IDT71256S
IDT71256L
FEATURES:
• High-speed address/chip select time
— Military: 25/30/35/45/55/70/85/100/120/150ns (max.)
— Commercial: 20/25/35/45ns (max.) Low Power only.
• Low-power operation
• Battery Backup operation — 2V data retention
• Produced with advanced high-performance CMOS
technology
• Input and output directly TTL-compatible
• Available in standard 28-pin (300 or 600 mil) ceramic
DIP, 28-pin (600 mil) plastic DIP, 28-pin (300 mil) SOJ
and 32-pin LCC
• Military product compliant to MIL-STD-883, Class B
DESCRIPTION:
The IDT71256 is a 262,144-bit high-speed static RAM
organized as 32K x 8. It is fabricated using IDT’s high-
performance, high-reliability CMOS technology.
Address access times as fast as 20ns are available with
power consumption of only 350mW (typ.). The circuit also
offers a reduced power standby mode. When
CS
goes HIGH,
the circuit will automatically go to, and remain in, a low-power
standby mode as long as
CS
remains HIGH. In the full standby
mode, the low-power device consumes less than 15µW,
typically. This capability provides significant system level
power and cooling savings. The low-power (L) version also
offers a battery backup data retention capability where the
circuit typically consumes only 5µW when operating off a 2V
battery.
The lDT71256 is packaged in a 28-pin (300 or 600 mil)
ceramic DIP, a 28-pin 300 mil J-bend SOlC, and a 28-pin (600
mil) plastic DIP, and 32-pin LCC providing high board-level
packing densities.
The IDT71256 military RAM is manufactured in compliance
with the latest revision of MIL-STD-883, Class B, making it
ideally suited to military temperature applications demanding
the highest level of performance and reliability.
FUNCTIONAL BLOCK DIAGRAM
A
0
ADDRESS
DECODER
A
14
262,144 BIT
MEMORY ARRAY
V
CC
GND
I/O
0
INPUT
DATA
CIRCUIT
I/O
7
I/O CONTROL
CS
OE
WE
CONTROL
CIRCUIT
2946 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996
Integrated Device Technology, Inc.
AUGUST 1996
DSC-2946/7
7.2
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