LM393EDR2G Equivalent & Substitute Parts

Part Overview

The LM393EDR2G is a general-purpose dual comparator IC manufactured by onsemi, supplied in 8-SOIC surface mount packaging. This device operates across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply), making it suitable for analog signal comparison applications in industrial and consumer electronics. The part is currently active in production with 2,444 units in stock. Substitute parts are necessary when addressing supply constraints, specific packaging requirements, temperature range specifications, or manufacturer preferences while maintaining functional equivalence.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM393EDR2G
Manufacturer	onsemi
Category	Linear
Type	General Purpose Comparator
Number of Elements	2
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	5mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	1mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the LM393EDR2G is determined by the following critical parameters:

Primary Substitution Criteria:

Dual comparator configuration (2 elements)
Supply voltage range compatibility: minimum 2V ~ 36V single supply or ±1V ~ ±18V dual supply
Input offset voltage within acceptable tolerance for the application
Input bias current specifications
Output current capability (minimum 16mA typical)
Operating temperature range (minimum 0°C ~ 70°C coverage)
Surface mount packaging with 8-pin configuration
ROHS3 compliance and MSL rating

Package Compatibility: Substitutes in 8-SOIC, 8-SOP, 8-TSSOP, 8-UFSON, and 8-DSBGA packages are considered equivalent for PCB layout purposes, as all maintain the same pin count and electrical interface. Through-hole packages (8-DIP) are functionally equivalent but require different PCB design considerations.

Electrical Equivalence: All listed substitutes maintain the core dual-comparator architecture with compatible supply voltage ranges, input offset specifications, and output drive capabilities. Variations in quiescent current (1mA to 2.5mA) and propagation delay are within acceptable tolerances for general-purpose comparator applications.

Parameter Comparison

Part Number	Manufacturer	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package	RoHS Status
LM393EDR2G	onsemi	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	0°C ~ 70°C	8-SOIC	ROHS3
AP393ASG-13	Diodes Incorporated	2V~36V, ±1V~18V	8mV @ 5V	0.4µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	8-SOP	ROHS3
LM193DR	UMW	2V~32V, ±1V~16V	5mV	250nA	16mA	1mA	-55°C ~ 125°C	8-SOP	ROHS3
LM193QT	STMicroelectronics	2V~36V, ±1V~18V	—	—	—	2.5mA	—	8-UFSON	ROHS3
LM2903AVQPWRQ1	Texas Instruments	2V~36V, ±1V~18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-TSSOP	ROHS3
LM2903DR	UMW	2V~30V, ±1V~±15V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	8-SOP	ROHS3
LM2903DT	STMicroelectronics	2V~36V, ±1V~18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	8-SOIC	ROHS3
LM2903ITL/NOPB	Texas Instruments	2V~36V, ±1V~18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 85°C	8-DSBGA	ROHS3
LM2903M/NOPB	Texas Instruments	2V~36V, ±1V~18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 85°C	8-SOIC	ROHS3
LM2903N/NOPB	Texas Instruments	2V~36V, ±1V~18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 85°C	8-DIP	ROHS3
LM2903VQPWRG4Q1	Texas Instruments	2V~36V, ±1V~18V	7mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-TSSOP	ROHS3

Engineering Selection Recommendations

Direct Surface Mount Equivalents (8-SOIC Package): LM2903M/NOPB and LM2903DT are pin-compatible direct replacements in the same 8-SOIC package. Both maintain full supply voltage compatibility and output current specifications. LM2903DT offers extended operating temperature range (-40°C ~ 125°C) compared to the LM393EDR2G (0°C ~ 70°C), suitable for industrial applications. LM2903M/NOPB provides identical temperature range to LM2903DT with equivalent electrical performance.

Alternative Surface Mount Packages: AP393ASG-13 (8-SOP), LM193DR (8-SOP), and LM2903DR (8-SOP) provide functional equivalence with different package footprints. LM193DR offers the widest operating temperature range (-55°C ~ 125°C) and lowest input bias current (250nA), though with slightly reduced maximum supply voltage (32V vs. 36V). LM2903AVQPWRQ1 and LM2903VQPWRG4Q1 in 8-TSSOP packaging provide automotive-grade qualification (AEC-Q100) with extended temperature ranges.

Compact Package Option: LM193QT in 8-UFSON (2x2) package offers the smallest footprint for space-constrained applications while maintaining full supply voltage compatibility.

Through-Hole Alternative: LM2903N/NOPB in 8-DIP package is functionally equivalent for applications requiring through-hole mounting, with identical electrical specifications to LM2903M/NOPB.

Compliance and Certification: All listed substitutes maintain ROHS3 compliance and MSL rating of 1 (Unlimited), ensuring compatibility with standard manufacturing processes. Automotive-qualified variants (LM2903AVQPWRQ1, LM2903VQPWRG4Q1) carry AEC-Q100 certification for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I use LM2903 variants as direct replacements for LM393EDR2G? A: Yes. LM2903 series parts are functionally equivalent dual comparators with identical pin configurations and electrical characteristics. The primary differences are packaging options, temperature ranges, and manufacturer variants. Electrical performance remains consistent across the series.

Q: What is the difference between 8-SOIC and 8-SOP packages? A: Both are 8-pin surface mount packages with identical pin spacing (0.154" / 3.90mm width) and electrical interfaces. The primary difference is the lead form: SOIC features gull-wing leads while SOP may have slightly different lead geometry. Both are compatible with standard PCB assembly equipment.

Q: Which substitute offers the widest operating temperature range? A: LM193DR provides the widest range at -55°C ~ 125°C, followed by LM2903DT, LM2903M/NOPB, LM2903AVQPWRQ1, and LM2903VQPWRG4Q1 at -40°C ~ 125°C. The original LM393EDR2G operates from 0°C ~ 70°C.

Q: Are automotive-qualified parts necessary for my application? A: Automotive qualification (AEC-Q100) is required only for automotive applications. LM2903AVQPWRQ1 and LM2903VQPWRG4Q1 carry this certification. For industrial and consumer applications, standard-grade parts are appropriate.

Q: What is the significance of input offset voltage differences? A: Input offset voltage determines the accuracy of the comparison threshold. The LM393EDR2G specifies 5mV maximum at 5V. Substitutes range from 2mV (LM2903AVQPWRQ1) to 8mV (AP393ASG-13). Lower values provide better accuracy; higher values are acceptable for applications with larger hysteresis margins.

Q: Can I substitute a through-hole package (8-DIP) for surface mount? A: LM2903N/NOPB in 8-DIP is electrically equivalent but requires different PCB design and assembly processes. Use only if your application specifically requires through-hole mounting.

Q: What does MSL rating mean for component selection? A: Moisture Sensitivity Level (MSL) indicates how long a component can be stored after opening the moisture barrier bag. MSL 1 (Unlimited) means no time restriction, making these parts suitable for standard manufacturing environments without special handling.

Q: Are there inventory considerations for substitution? A: Yes. LM2903M/NOPB has the highest inventory (120,721 units), followed by LM2903DR (105,200 units) and LM2903DT (85,400 units). The original LM393EDR2G has 2,444 units available. Substitute selection may be influenced by supply availability.

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