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Technical Data Sheet
54LS21DM ✓ 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: 0.245 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN, body_height: 0.185 INCHES MAXIMUM IN, body_length: 0.750 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN, features_provided: LOW POWER AND SCHOTTKY AND MONOLITHIC, output_logic_form: COMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC, inclosure_material: CERAMIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-171-2154, 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
54LS21DM
NSN: 5962-01-171-2154
FSC: 5962
CAGE: 34148 — FAIRCHILD CAMERA AND INSTRUMENT CORP SUB OF SCHLUMBERGER LTD (USA)
SPECIFICATIONS
body_width0.245 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
body_height0.185 INCHES MAXIMUM IN
body_length0.750 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
features_providedLOW POWER AND SCHOTTKY AND MONOLITHIC
output_logic_formCOMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC
inclosure_materialCERAMIC
operating_temp_range-55.0 TO 55.0 CELSIUS DEGC
input_circuit_patternDUAL 4 INPUT
inclosure_configurationDUAL-IN-LINE
design_function_and_quantity2 GATE
NSN5962-01-171-2154
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN 54LS21DM MFR MICROCIRCUIT,DIGITAL
KEY FEATURES
INCLOSURE CONFIGURATION: DUAL-IN-LINE
INCLOSURE MATERIAL: SILICON
OPERATING TEMP RANGE: -55.0 TO 125.0 CELSIUS DEGC
BODY HEIGHT: 0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
INPUT CIRCUIT PATTERN: DUAL 4 INPUT
TEST DATA DOCUMENT: 81349-MIL-M-38510/310 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
DESIGN FUNCTION AND QUANTITY: 2 GATE, AND
BODY WIDTH: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
INCLOSURE CONFIGURATIONDUAL-IN-LINE
INCLOSURE MATERIALSILICON
OPERATING TEMP RANGE-55.0 TO 125.0 CELSIUS DEGC
BODY HEIGHT0.140 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
INPUT CIRCUIT PATTERNDUAL 4 INPUT
TEST DATA DOCUMENT81349-MIL-M-38510/310 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
DESIGN FUNCTION AND QUANTITY2 GATE, AND
BODY WIDTH0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
BODY LENGTH0.785 INCHES MAXIMUM IN
OUTPUT LOGIC FORMTRANSISTOR-TRANSISTOR LOGIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
74H21PCInterchangeable
interchangeable cross-reference
interchangeable
DM54H21D883BInterchangeable
interchangeable cross-reference
interchangeable
74H21Interchangeable
interchangeable cross-reference
interchangeable
477-1359-004Interchangeable
interchangeable cross-reference
interchangeable
SC27441LHInterchangeable
interchangeable cross-reference
interchangeable
308738-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54LS21DM?
54LS21DM is a MICROCIRCUIT,DIGITAL.
What parts can replace 54LS21DM?
There are 18 known substitutes for 54LS21DM: 74H21PC, DM54H21D883B, 74H21 and 15 more. Substitute compatibility should be verified for your specific system.
Is 54LS21DM still available?
54LS21DM is currently cancelled.
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