PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AM27C256-70Microcircuit,memory

Advanced Micro Devices Inc Dba AMD Austin · NSN 5962-01-389-7020 · FSC 5962 · No Item Name Available
Verified by PartsTable
NSN 5962-01-389-7020 — this item is cataloged by the U.S. Government under National Stock Number 5962-01-389-7020. Primary manufacturer part number: AM27C256-70.
Features
  • Microcircuit,memory — FSC 5962
  • Inclosure Material: CERAMIC
  • Body Height: 4.40 MILLIMETERS MAXIMUM MM
  • Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC
  • Body Width: 12.70 MILLIMETERS MINIMUM AND 15.49 MILLIMETERS MAXIMUM MM
  • Voltage Rating and Type Per Characteristic: 14.0 VOLTS NOMINAL TOTAL SUPPLY
  • Memory Device Type: EPROM
  • Current Rating Per Characteristic: 90.00 MILLIAMPERES MAXIMUM INPUT DRIVE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microcircuit,memory, cataloged under National Stock Number 5962-01-389-7020, is classified within Federal Supply Class 5962 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Advanced Micro Devices Inc Dba AMD Austin. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5962-01-389-7020
Primary Part NumberAM27C256-70
Item NameMicrocircuit,memory
FSC / FSG5962 / 59 — No Item Name Available
ManufacturerAdvanced Micro Devices Inc Dba AMD Austin
StatusCANCELLED
Inclosure MaterialCERAMIC
Body Height4.40 MILLIMETERS MAXIMUM MM
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Body Width12.70 MILLIMETERS MINIMUM AND 15.49 MILLIMETERS MAXIMUM MM
Voltage Rating and Type Per Characteristic14.0 VOLTS NOMINAL TOTAL SUPPLY
Memory Device TypeEPROM
Current Rating Per Characteristic90.00 MILLIAMPERES MAXIMUM INPUT DRIVE
Terminal Surface TreatmentSOLDER
Test Data Document96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
Terminal Type and Quantity28 PRINTED CIRCUIT
Case Outline Source and DesignatorD-10 MIL-M-38510
Time Rating Per Chacteristic70.00 NANOSECONDS MAXIMUM INPUT TO OUTPUT ACCESS NS
Features ProvidedHERMETICALLY SEALED AND BURN IN AND PROGRAMMED AND ULTRAVIOLET ERASABLE
Body Length37.85 MILLIMETERS MAXIMUM MM
Storage Temp Range-65.0 TO 150.0 CELSIUS DEGC
Inclosure ConfigurationDUAL-IN-LINE
Output Logic FormCOMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5962-01-261-9625 INTERCHANGEABLE
Microcircuit,memory
5962-01-261-9626 INTERCHANGEABLE
Microcircuit,memory
5962-01-261-9627 INTERCHANGEABLE
Microcircuit,memory
5962-01-262-9858 INTERCHANGEABLE
Microcircuit,memory
5962-01-319-5842 INTERCHANGEABLE
Microcircuit,memory
5962-01-329-7165 INTERCHANGEABLE
Microcircuit,memory
5962-01-352-1006 INTERCHANGEABLE
Microcircuit,memory
5962-01-371-3742 INTERCHANGEABLE
Microcircuit,memory
5962-01-390-2003301000 INTERCHANGEABLE
Microcircuit,memory
Northrop Grumman Systems Corporation
5962-01-390-2005301001-101 INTERCHANGEABLE
Microcircuit,memory
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
AM27C256-70 Advanced Micro Devices Inc Dba AMD Austin (USA)
WS57C256F-70DMB Waferscale Integration Inc (USA)
5962-8606308XB Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
5962-8606308XX Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
5962-86063 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
AT27HC256R-70DM/883 Atmel Corporation (USA)
ROM/PROM HEAD 199 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
5962-8606308XA Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
Related Parts
5962-01-261-9625INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-261-9626INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-261-9627INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-262-9858INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-319-5842INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-329-7165INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-352-1006INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-371-3742INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-390-2003INTERCHANGEABLE
MICROCIRCUIT,MEMORY
301000
5962-01-390-2005INTERCHANGEABLE
MICROCIRCUIT,MEMORY
301001-101
5962-01-390-2006INTERCHANGEABLE
MICROCIRCUIT,MEMORY
301002
5962-01-390-2007INTERCHANGEABLE
MICROCIRCUIT,MEMORY
300989-101

Frequently Asked Questions

What is NSN 5962-01-389-7020?

NSN 5962-01-389-7020 is a Microcircuit,memory, manufactured by Advanced Micro Devices Inc Dba AMD Austin, classified under FSC 5962 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5962-01-389-7020?

NSN 5962-01-389-7020 has 8 cross-referenced part numbers: AM27C256-70 (Advanced Micro Devices Inc Dba AMD Austin), WS57C256F-70DMB (Waferscale Integration Inc), 5962-8606308XB (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit), 5962-8606308XX (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit), 5962-86063 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit) and 3 more.

What NSN replaces 5962-01-389-7020?

There are 12 known substitutes for 5962-01-389-7020: 5962-01-261-9625, 5962-01-261-9626, 5962-01-261-9627 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AM27C256-70?

Key specifications for AM27C256-70: Inclosure Material: CERAMIC; Body Height: 4.40 MILLIMETERS MAXIMUM MM; Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC; Body Width: 12.70 MILLIMETERS MINIMUM AND 15.49 MILLIMETERS MAXIMUM MM. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5962-01-389-7020 still in active supply?

NSN 5962-01-389-7020 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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