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Technical Data Sheet
644789 ✓ 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: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, body_height: 0.130 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN, body_length: 1.060 INCHES MAXIMUM IN, special_features: NUCLEAR HARDNESS CRITICAL ITEMS, features_provided: HERMETICALLY SEALED AND MONOLITHIC AND 3-STATE OUTPUT AND LOW POWER, 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 2995-00-740-1737, 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
644789
NSN: 2995-00-740-1737
FSC: 2995
CAGE: 92003 — PARKER HANNIFIN CORPORATION DIV AEROSPACE GROUP HEADQUARTERS (USA)
SPECIFICATIONS
body_width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
body_height0.130 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
body_length1.060 INCHES MAXIMUM IN
special_featuresNUCLEAR HARDNESS CRITICAL ITEMS
features_providedHERMETICALLY SEALED AND MONOLITHIC AND 3-STATE OUTPUT AND LOW POWER
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
inclosure_materialCERAMIC
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
input_circuit_pattern10 INPUT
inclosure_configurationDUAL-IN-LINE
terminal_surface_treatmentSOLDER
NSN2995-00-740-1737
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN 644789 MFR MICROCIRCUIT,DIGITAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
SN54LS240J/883BInterchangeable
interchangeable cross-reference
interchangeable
804857-1Interchangeable
interchangeable cross-reference
interchangeable
SN54LS240JBInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 644789?
644789 is a MICROCIRCUIT,DIGITAL.
What parts can replace 644789?
There are 3 known substitutes for 644789: SN54LS240J/883B, 804857-1, SN54LS240JB. Substitute compatibility should be verified for your specific system.
What is the NSN for 644789?
644789 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2995-00-740-1737. This indicates validated use in U.S. government and defense supply chains.
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