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Technical Data Sheet
SD77999 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include body_width: 0.250 INCHES NOMINAL IN, body_height: 0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN, body_length: 0.875 INCHES NOMINAL IN, special_features: NUCLEAR HARDNESS CRITICAL ITEMS, features_provided: PRESETTABLE AND W/CLEAR AND EDGE TRIGGERED AND LOW POWER AND SCHOTTKY, output_logic_form: TRANSISTOR-TRANSISTOR LOGIC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-277-2917, 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
SD77999
NSN: 5962-01-277-2917
FSC: 5962
CAGE: 27014 — NATIONAL SEMICONDUCTOR CORPORATION (USA)
SPECIFICATIONS
body_width0.250 INCHES NOMINAL IN
body_height0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
body_length0.875 INCHES NOMINAL IN
special_featuresNUCLEAR HARDNESS CRITICAL ITEMS
features_providedPRESETTABLE AND W/CLEAR AND EDGE TRIGGERED AND LOW POWER AND SCHOTTKY
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
inclosure_materialSILICON
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
operating_temp_range+0.0 TO 70.0 CELSIUS DEGC
input_circuit_patternDUAL 5 INPUT
end_item_identificationRADAR SET,TYPE AN/FPS-115
inclosure_configurationDUAL-IN-LINE
NSN5962-01-277-2917
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN SD77999 MFR MICROCIRCUIT,DIGITAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
477-1183-003Interchangeable
interchangeable cross-reference
interchangeable
99106893Interchangeable
interchangeable cross-reference
interchangeable
SN74LS112N10P1Interchangeable
interchangeable cross-reference
interchangeable
5962PL0980521Interchangeable
interchangeable cross-reference
interchangeable
725000-898Interchangeable
interchangeable cross-reference
interchangeable
725000-285Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SD77999?
SD77999 is a MICROCIRCUIT,DIGITAL.
What parts can replace SD77999?
There are 8 known substitutes for SD77999: 477-1183-003, 99106893, SN74LS112N10P1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SD77999?
SD77999 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-277-2917. This indicates validated use in U.S. government and defense supply chains.
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