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DM74H21N — MICROCIRCUIT,DIGITAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

DM74H21N: MICROCIRCUIT,DIGITAL.

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include body_width: 0.260 INCHES NOMINAL IN, body_height: 0.180 INCHES NOMINAL IN, body_length: 0.770 INCHES NOMINAL IN, features_provided: MONOLITHIC, output_logic_form: TRANSISTOR-TRANSISTOR LOGIC, inclosure_material: PLASTIC. This part is cataloged in the U.S.

Government catalog under NSN 5962-00-495-4976, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
DM74H21N
NSN: 5962-00-495-4976
FSC: 5962 — Microcircuits, Electronic
CAGE: 27014 — NATIONAL SEMICONDUCTOR CORPORATION (USA)
SPECIFICATIONS
body_width0.260 INCHES NOMINAL IN
body_height0.180 INCHES NOMINAL IN
body_length0.770 INCHES NOMINAL IN
features_providedMONOLITHIC
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
inclosure_materialPLASTIC
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
operating_temp_range+0.0 TO 70.0 CELSIUS DEGC
input_circuit_patternDUAL 4 INPUT
inclosure_configurationDUAL-IN-LINE
terminal_surface_treatmentSOLDER
design_function_and_quantity2 GATE, AND
NSN5962-00-495-4976
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN DM74H21N MFR MICROCIRCUIT,DIGITAL
KEY FEATURES
•
INPUT CIRCUIT PATTERN: DUAL 4 INPUT
•
INCLOSURE MATERIAL: PLASTIC
•
TERMINAL SURFACE TREATMENT: SOLDER
•
DESIGN FUNCTION AND QUANTITY: 2 GATE, AND
•
BODY WIDTH: 0.260 INCHES NOMINAL IN
•
BODY HEIGHT: 0.180 INCHES NOMINAL IN
•
FEATURES PROVIDED: MONOLITHIC
•
INCLOSURE CONFIGURATION: DUAL-IN-LINE
TECHNICAL CHARACTERISTICS
INPUT CIRCUIT PATTERNDUAL 4 INPUT
INCLOSURE MATERIALPLASTIC
TERMINAL SURFACE TREATMENTSOLDER
DESIGN FUNCTION AND QUANTITY2 GATE, AND
BODY WIDTH0.260 INCHES NOMINAL IN
BODY HEIGHT0.180 INCHES NOMINAL IN
FEATURES PROVIDEDMONOLITHIC
INCLOSURE CONFIGURATIONDUAL-IN-LINE
BODY LENGTH0.770 INCHES NOMINAL IN
STORAGE TEMP RANGE-65.0 TO 150.0 CELSIUS DEGC
SUBSTITUTES & CROSS-REFERENCES 5
170-060Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
402275-30Reference document
Same NSN cross-reference
Reference document — Secondary reference
594031-7Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
007705300Reference document
Same NSN cross-reference
Reference document — Secondary reference
9999466Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DM74H21N?
DM74H21N is a MICROCIRCUIT,DIGITAL.
What parts can replace DM74H21N?
There are 5 known substitutes for DM74H21N: 170-060, 402275-30, 594031-7 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DM74H21N?
DM74H21N is cataloged in the U.S. Government catalog under NSN 5962-00-495-4976. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.