LM393APG4 Equivalent & Substitute Parts

Part Overview

The LM393APG4 is a dual general-purpose comparator IC manufactured by Texas Instruments, featuring open-collector, rail-to-rail output configuration in an 8-PDIP package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The LM393 series remains widely available through active product variants and cross-manufacturer alternatives that maintain functional and electrical compatibility.

Substiute Parts

LM393APG4

Texas InstrumentsIn Stock: 866LM393APG4 Datasheet

Current PartRFQ

LM393AP

Texas InstrumentsIn Stock: 4479LM393AP Datasheet

MFR RecommendedRFQ

LM393N/NOPB

Texas InstrumentsIn Stock: 89244LM393N/NOPB Datasheet

MFR RecommendedRFQ

AS393P-E1

Diodes IncorporatedIn Stock: 40236AS393P-E1 Datasheet

MFR RecommendedRFQ

LT1017IN8#PBF

Analog Devices Inc.In Stock: 79280LT1017IN8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM393APG4 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package type: 8-DIP (0.300", 7.62mm) through-hole mounting
• Number of comparator elements: 2
• Supply voltage range: 2V ~ 36V single supply or ±1V ~ 18V dual supply
• Output configuration: Open-collector or compatible pull-up topology
• Input offset voltage and bias current specifications
• Operating temperature range compatibility

Substitution Logic: Parts are grouped as direct substitutes when they maintain identical or superior electrical performance within the specified parameter ranges. Texas Instruments LM393 variants (LM393AP, LM393N/NOPB) provide pin-for-pin compatibility with matching output types. The Diodes Incorporated AS393P-E1 offers equivalent functionality with extended operating temperature range. The Analog Devices LT1017IN8#PBF represents a higher-performance alternative with pull-up output topology, requiring circuit evaluation for output stage compatibility.

Parameter Comparison

Engineering Selection Recommendations

LM393AP (Texas Instruments) Direct substitute with active product status. Identical electrical specifications and package configuration. Recommended as primary replacement for LM393APG4 obsolescence mitigation. Maintains full compatibility with existing PCB layouts and circuit designs.

LM393N/NOPB (Texas Instruments) Active product variant with matching supply voltage range and package. Specifications remain within acceptable tolerance for general-purpose comparator applications. Higher inventory availability supports production continuity. Suitable for designs with relaxed input offset voltage requirements (5mV maximum).

AS393P-E1 (Diodes Incorporated) Cross-manufacturer alternative with extended operating temperature range (-40°C to 85°C). Meets all electrical parameter requirements for LM393APG4 replacement. Lower quiescent current (1mA) provides power efficiency advantage. ROHS3 and REACH compliant. Recommended for applications requiring wider temperature operation.

LT1017IN8#PBF (Analog Devices Inc.) Higher-performance alternative with superior input offset voltage (1mV), lower input bias current (0.015µA), and higher output current capability (65mA). Pull-up output topology requires circuit verification for compatibility with open-collector designs. Extended supply voltage range (1.1V ~ 40V) and temperature range (-40°C to 85°C) support demanding applications. Suitable for precision measurement and low-power applications where performance specifications justify component substitution.

Frequently Asked Questions (FAQ)

Q: Can LM393AP directly replace LM393APG4 without circuit modification? A: Yes. LM393AP provides pin-for-pin compatibility with identical electrical specifications, package configuration, and output type. No circuit modifications are required.

Q: What is the primary reason for LM393APG4 obsolescence? A: The LM393APG4 is classified as obsolete by Texas Instruments. Active variants (LM393AP, LM393N/NOPB) remain in production and provide equivalent functionality.

Q: Are there temperature range limitations when substituting with AS393P-E1? A: No. AS393P-E1 extends the operating temperature range to -40°C ~ 85°C, which encompasses the original LM393APG4 range (0°C ~ 70°C). This makes it suitable for wider application environments.

Q: Can LT1017IN8#PBF replace LM393APG4 in all applications? A: LT1017IN8#PBF features pull-up output topology versus the open-collector configuration of LM393APG4. Circuit evaluation is required to verify output stage compatibility. The higher performance specifications make it suitable for precision applications but may introduce unnecessary cost in standard comparator circuits.

Q: What packaging considerations apply to all substitute parts? A: All substitute parts maintain the 8-DIP (0.300", 7.62mm) through-hole package format. PCB layouts and socket compatibility remain unchanged across all listed alternatives.

Q: Are all substitute parts RoHS3 and REACH compliant? A: Yes. All listed substitute parts (LM393AP, LM393N/NOPB, AS393P-E1, LT1017IN8#PBF) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute offers the best power efficiency? A: AS393P-E1 provides the lowest quiescent current at 1mA maximum, compared to 2.5mA for LM393 variants. LT1017IN8#PBF offers significantly lower input bias current (0.015µA) for ultra-low-power applications.