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DM74LS191N — MICROCIRCUIT,DIGITAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

DM74LS191N: MICROCIRCUIT,DIGITAL.

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include body_width: 0.250 INCHES NOMINAL IN, body_height: 0.180 INCHES MAXIMUM IN, body_length: 0.870 INCHES MAXIMUM IN, features_provided: W/ENABLE AND SYNCHRONOUS AND REVERSIBLE UP/DOWN AND W/CLOCK AND PRESETTABLE, output_logic_form: TRANSISTOR-TRANSISTOR LOGIC, inclosure_material: PLASTIC. This part is cataloged in the U.S.

Government catalog under NSN 5962-01-065-7027, 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
DM74LS191N
NSN: 5962-01-065-7027
NIINs: 010657027, 012372538, 012488630
FSC: 5962 — Microcircuits, Electronic
CAGE: 27014 — NATIONAL SEMICONDUCTOR CORPORATION (USA)
SPECIFICATIONS
body_width0.250 INCHES NOMINAL IN
body_height0.180 INCHES MAXIMUM IN
body_length0.870 INCHES MAXIMUM IN
features_providedW/ENABLE AND SYNCHRONOUS AND REVERSIBLE UP/DOWN AND W/CLOCK AND PRESETTABLE
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_pattern8 INPUT
inclosure_configurationDUAL-IN-LINE
terminal_surface_treatmentSOLDER
specification/standard_data81349-MIL-M-38510/315 GOVERNMENT SPECIFICATION
NSN5962-01-065-7027
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN DM74LS191N MFR MICROCIRCUIT,DIGITAL
KEY FEATURES
•
INPUT CIRCUIT PATTERN: 8 INPUT
•
INCLOSURE MATERIAL: CERAMIC AND GLASS
•
TERMINAL SURFACE TREATMENT: SOLDER
•
DESIGN FUNCTION AND QUANTITY: 1 COUNTER, BINARY CODED DECIMAL UP/DOWN
•
BODY WIDTH: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
BODY HEIGHT: 0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
•
FEATURES PROVIDED: HERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS AND LOW POWER AND SCHOTTKY AND ASYNCHRONOUS AND EDGE TRIGGERED AND PRESETTABLE AND PROGRAMMABLE AND SYNCHRONOUS AND W/ENABLE
•
INCLOSURE CONFIGURATION: DUAL-IN-LINE
TECHNICAL CHARACTERISTICS
INPUT CIRCUIT PATTERN8 INPUT
INCLOSURE MATERIALCERAMIC AND GLASS
TERMINAL SURFACE TREATMENTSOLDER
DESIGN FUNCTION AND QUANTITY1 COUNTER, BINARY CODED DECIMAL UP/DOWN
BODY WIDTH0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
BODY HEIGHT0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
FEATURES PROVIDEDHERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS AND LOW POWER AND SCHOTTKY AND ASYNCHRONOUS AND EDGE TRIGGERED AND PRESETTABLE AND PROGRAMMABLE AND SYNCHRONOUS AND W/ENABLE
INCLOSURE CONFIGURATIONDUAL-IN-LINE
CASE OUTLINE SOURCE AND DESIGNATORD-2 MIL-M-38510
SPECIFICATION/STANDARD DATA81349-MIL-M-38510/315 GOVERNMENT SPECIFICATION
SUBSTITUTES & CROSS-REFERENCES 9
477-1465-007Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
503231-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
01-49420-26Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SN74LS191N0P1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MIL-M-38510/315Reference document
Same NSN cross-reference
Reference document — Identification reference
SN74LS191Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is DM74LS191N?
DM74LS191N is a MICROCIRCUIT,DIGITAL.
What parts can replace DM74LS191N?
There are 9 known substitutes for DM74LS191N: 477-1465-007, 503231-1, 01-49420-26 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DM74LS191N?
DM74LS191N is cataloged in the U.S. Government catalog under NSN 5962-01-065-7027. 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.