PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MC54121LMicrocircuit,digital

Freescale Semiconductor, Inc. · NSN 5962-00-886-2782 · FSC 5962 · No Item Name Available
Verified by PartsTable
NSN 5962-00-886-2782 — this item is cataloged by the U.S. Government under National Stock Number 5962-00-886-2782. Primary manufacturer part number: MC54121L.
Features
  • Microcircuit,digital — FSC 5962
  • Body Width: 0.245 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
  • Design Function and Quantity: 1 MULTIVIBRATOR, MONOSTABLE
  • Body Height: 0.135 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
  • Features Provided: HERMETICALLY SEALED AND COMPLEMENTARY OUTPUTS AND DUAL NEGATIVE EDGE TRIGGERED
  • Time Rating Per Chacteristic: 70.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, LOW TO HIGH LEVEL OUTPUT AND 80.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, HIGH TO LOW LEVEL OUTPUT NS
  • Input Circuit Pattern: 3 INPUT
  • Output Logic Form: TRANSISTOR-TRANSISTOR LOGIC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microcircuit,digital, cataloged under National Stock Number 5962-00-886-2782, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5962-00-886-2782
Primary Part NumberMC54121L
Item NameMicrocircuit,digital
FSC / FSG5962 / 59 — No Item Name Available
ManufacturerFreescale Semiconductor, Inc.
StatusACTIVE
Body Width0.245 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
Design Function and Quantity1 MULTIVIBRATOR, MONOSTABLE
Body Height0.135 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED AND COMPLEMENTARY OUTPUTS AND DUAL NEGATIVE EDGE TRIGGERED
Time Rating Per Chacteristic70.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, LOW TO HIGH LEVEL OUTPUT AND 80.00 NANOSECONDS MAXIMUM PROPAGATION DELAY TIME, HIGH TO LOW LEVEL OUTPUT NS
Input Circuit Pattern3 INPUT
Output Logic FormTRANSISTOR-TRANSISTOR LOGIC
Body Length0.750 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
Inclosure ConfigurationDUAL-IN-LINE
Inclosure MaterialCERAMIC AND GLASS
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Storage Temp Range-65.0 TO 150.0 CELSIUS DEGC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5962-00-758-7506SN54121J INTERCHANGEABLE
Microcircuit,digital
National Semiconductor Corporation
5962-01-262-7135 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
7537136P9 Lockheed Martin Corp Naval Electronics & Surveillance Systems (USA)
SN54121 Texas Instruments Incorporated (USA)
MC54121L PRIMARY Freescale Semiconductor, Inc. (USA)
51P06339D001 General Dynamics Mission Systems, Inc. Dba Gdms (USA)
51P06339D001 Motorola Inc. Dba Integrated Information Systems Group (USA)
Related Parts
5962-00-758-7506INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SN54121J
5962-01-262-7135INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 5962-00-886-2782?

NSN 5962-00-886-2782 is a Microcircuit,digital, manufactured by Freescale Semiconductor, Inc., classified under FSC 5962 (No Item Name Available). Status: active.

What are the part numbers for NSN 5962-00-886-2782?

NSN 5962-00-886-2782 has 5 cross-referenced part numbers: 7537136P9 (Lockheed Martin Corp Naval Electronics & Surveillance Systems), SN54121 (Texas Instruments Incorporated), MC54121L (Freescale Semiconductor, Inc.), 51P06339D001 (General Dynamics Mission Systems, Inc. Dba Gdms), 51P06339D001 (Motorola Inc. Dba Integrated Information Systems Group).

What NSN replaces 5962-00-886-2782?

There are 2 known substitutes for 5962-00-886-2782: 5962-00-758-7506, 5962-01-262-7135. Verify interchangeability with system specifications before substitution.

What are the specifications of MC54121L?

Key specifications for MC54121L: Body Width: 0.245 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; Design Function and Quantity: 1 MULTIVIBRATOR, MONOSTABLE; Body Height: 0.135 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Features Provided: HERMETICALLY SEALED AND COMPLEMENTARY OUTPUTS AND DUAL NEGATIVE EDGE TRIGGERED. 12 total characteristics are documented in the Federal Logistics Information System.

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