LM393ADRE4 Equivalent & Substitute Parts

Part Overview

The LM393ADRE4 is a dual general-purpose comparator IC manufactured by Texas Instruments, featuring open-collector, rail-to-rail output configuration in an 8-SOIC surface-mount package. This device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. The LM393 series provides voltage comparison functionality across a wide supply voltage range, suitable for analog signal processing applications requiring low-power operation and flexible output characteristics.

Substiute Parts

LM393ADRE4

Texas InstrumentsIn Stock: 1040LM393ADRE4 Datasheet

Current PartRFQ

LM393ADR

UMWIn Stock: 105195LM393ADR Datasheet

MFR RecommendedRFQ

LM393ADRG4

Texas InstrumentsIn Stock: 2985LM393ADRG4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM393ADRE4 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Dual comparator configuration (2 elements)
• Open-collector, rail-to-rail output type
• Supply voltage range: 2V ~ 36V, ±1V ~ 18V
• General-purpose comparator classification
• Operating temperature range: 0°C ~ 70°C

Mechanical Compatibility Criteria:

• 8-pin package footprint (8-SOIC or equivalent 8-SOP)
• Surface-mount mounting type
• 0.154" (3.90mm) package width

Compliance Criteria:

• ROHS3 compliance
• MSL rating of 1 (Unlimited)

Substitutes are grouped into two categories: MFR Recommended (manufacturer-approved alternatives) and Parametric Equivalents (parts meeting all electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

LM393ADR (UMW) - MFR Recommended Substitute: This part is the manufacturer-recommended alternative, currently in active production status with high inventory availability (105,100 pcs). It maintains full electrical and mechanical compatibility with the LM393ADRE4 across all critical parameters: dual comparator configuration, open-collector rail-to-rail output, identical supply voltage range, and 8-SOIC package footprint. The LM393ADR exhibits slightly higher input offset voltage (5mV vs. 2mV) and lower quiescent current (1mA vs. 2.5mA), representing acceptable performance variations within the general-purpose comparator classification. ROHS3 compliance and MSL-1 rating are maintained. Active product status ensures long-term availability and supply chain continuity.

LM393ADRG4 (Texas Instruments) - Parametric Equivalent: This Texas Instruments part provides parametric equivalence to the LM393ADRE4, matching all electrical specifications including input offset voltage (2mV @ 30V), input bias current (0.25µA @ 5V), and output current (20mA). Package configuration, mounting type, and compliance certifications are identical. Product status is obsolete, consistent with the main part. This substitute is suitable for applications requiring exact electrical parameter matching and original manufacturer sourcing.

Frequently Asked Questions (FAQ)

Q: Can LM393ADR be used as a direct replacement for LM393ADRE4? A: Yes. The LM393ADR maintains functional and mechanical compatibility across all critical parameters: dual comparator configuration, open-collector rail-to-rail output, 2V ~ 36V supply voltage range, and 8-SOIC package footprint. Minor variations in input offset voltage (5mV vs. 2mV) and quiescent current (1mA vs. 2.5mA) are within acceptable tolerances for general-purpose comparator applications.

Q: What is the difference between the MFR Recommended and Parametric Equivalent substitutes? A: The LM393ADR (MFR Recommended) is actively produced by UMW with high inventory availability, offering long-term supply assurance. The LM393ADRG4 (Parametric Equivalent) is a Texas Instruments part with identical electrical specifications to the main part but obsolete status. Selection depends on supply chain requirements and manufacturer preference.

Q: Are package dimensions identical across all three parts? A: Yes. All three parts use the 8-SOIC package with 0.154" (3.90mm) width, ensuring identical PCB footprint and mounting compatibility.

Q: Do all parts meet the same compliance standards? A: Yes. LM393ADRE4, LM393ADR, and LM393ADRG4 are all ROHS3 compliant with MSL-1 (Unlimited) moisture sensitivity rating, meeting identical environmental and regulatory requirements.

Q: Which substitute should be selected for new designs? A: The LM393ADR is recommended for new designs due to active production status and superior inventory availability, ensuring long-term component sourcing and supply chain stability.