PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SN54LS256JMicrocircuit,digital

Freescale Semiconductor, Inc. · NSN 5962-01-158-5205 · FSC 5962 · No Item Name Available
Verified by PartsTable
NSN 5962-01-158-5205 — this item is cataloged by the U.S. Government under National Stock Number 5962-01-158-5205. Primary manufacturer part number: SN54LS256J.
Features
  • Microcircuit,digital — FSC 5962
  • Storage Temp Range: -65.0 TO 150.0 CELSIUS DEGC
  • Case Outline Source and Designator: D-2 MIL-M-38510
  • Voltage Rating and Type Per Characteristic: 15.0 VOLTS MAXIMUM POWER SOURCE
  • Design Function and Quantity: 2 LATCH, ADDRESSABLE
  • Test Data Document: 96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
  • Time Rating Per Chacteristic: 30.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, LOW TO HIGH LEVEL OUTPUT AND 24.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, HIGH TO LOW LEVEL OUTPUT NS
  • Terminal Surface Treatment: SOLDER
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microcircuit,digital, cataloged under National Stock Number 5962-01-158-5205, 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 Freescale Semiconductor, Inc.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5962-01-158-5205
Primary Part NumberSN54LS256J
Item NameMicrocircuit,digital
FSC / FSG5962 / 59 — No Item Name Available
ManufacturerFreescale Semiconductor, Inc.
StatusCANCELLED
Storage Temp Range-65.0 TO 150.0 CELSIUS DEGC
Case Outline Source and DesignatorD-2 MIL-M-38510
Voltage Rating and Type Per Characteristic15.0 VOLTS MAXIMUM POWER SOURCE
Design Function and Quantity2 LATCH, ADDRESSABLE
Test Data Document96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
Time Rating Per Chacteristic30.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, LOW TO HIGH LEVEL OUTPUT AND 24.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, HIGH TO LOW LEVEL OUTPUT NS
Terminal Surface TreatmentSOLDER
Terminal Type and Quantity16 PRINTED CIRCUIT
Body Width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED AND BURN IN AND W/ENABLE AND W/CLEAR AND EXPANDABLE
Input Circuit Pattern6 INPUT
Inclosure MaterialCERAMIC
Inclosure ConfigurationDUAL-IN-LINE
Body Height0.185 INCHES MAXIMUM IN
Output Logic FormTRANSISTOR-TRANSISTOR LOGIC
Body Length0.840 INCHES MAXIMUM IN
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5331-00-291-3076SAE-AS29513-239 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5962-01-187-2452 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
SN54LS256J Freescale Semiconductor, Inc. (USA)
54LS256DMQB National Semiconductor Corporation (USA)
SN54LS265DM Fairchild Semiconductor Corp (USA)
SL54LS256/BEA Lansdale Semiconductor, Inc. (USA)
54LS256BEBJC Freescale Semiconductor, Inc. (USA)
Related Parts
5331-00-291-3076INTERCHANGEABLE
O-RING
SAE-AS29513-239
5962-01-187-2452INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 5962-01-158-5205?

NSN 5962-01-158-5205 is a Microcircuit,digital, manufactured by Freescale Semiconductor, Inc., classified under FSC 5962 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5962-01-158-5205?

NSN 5962-01-158-5205 has 5 cross-referenced part numbers: SN54LS256J (Freescale Semiconductor, Inc.), 54LS256DMQB (National Semiconductor Corporation), SN54LS265DM (Fairchild Semiconductor Corp), SL54LS256/BEA (Lansdale Semiconductor, Inc.), 54LS256BEBJC (Freescale Semiconductor, Inc.).

What NSN replaces 5962-01-158-5205?

There are 2 known substitutes for 5962-01-158-5205: 5331-00-291-3076, 5962-01-187-2452. Verify interchangeability with system specifications before substitution.

What are the specifications of SN54LS256J?

Key specifications for SN54LS256J: Storage Temp Range: -65.0 TO 150.0 CELSIUS DEGC; Case Outline Source and Designator: D-2 MIL-M-38510; Voltage Rating and Type Per Characteristic: 15.0 VOLTS MAXIMUM POWER SOURCE; Design Function and Quantity: 2 LATCH, ADDRESSABLE. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5962-01-158-5205 still in active supply?

NSN 5962-01-158-5205 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.
PartsTable Design LLC · partstable.com