LM293DRE4 Equivalent & Substitute Parts

Part Overview

The LM293DRE4 is a general-purpose dual comparator IC manufactured by Texas Instruments in 8-SOIC surface-mount packaging. This device features open-collector, open-drain, and rail-to-rail output configurations, operating across a supply voltage range of 2V to 36V (single) or ±1V to ±18V (dual). The LM293DRE4 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Active alternatives with identical or superior electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LM293DRE4
Category	Linear Comparator
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Number of Elements	2
Output Type	Open-Collector, Open-Drain, Rail-to-Rail
Supply Voltage Range	2V ~ 36V (Single), ±1V ~ 18V (Dual)
Input Offset Voltage (Max)	5mV @ 30V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	20mA
Quiescent Current (Max)	2.5mA
Operating Temperature	-25°C ~ 85°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM293DRE4 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Package type: 8-SOIC surface-mount configuration
Number of comparator elements: 2
Output type: Open-collector capability (minimum requirement)
Supply voltage range: 2V ~ 36V single / ±1V ~ ±18V dual
Input offset voltage: 5mV or lower @ specified test voltage
Input bias current: 0.25µA or lower @ 5V
Output current: 16mA or higher
Quiescent current: 2.5mA or lower
Operating temperature range: Must encompass -25°C minimum and 85°C maximum

Substitute parts are grouped into three categories based on manufacturer recommendation status and parametric equivalence:

MFR Recommended: Parts explicitly designated by Texas Instruments as direct replacements with identical base part numbers (LM293 series).

Parametric Equivalent: Parts meeting all electrical specifications with identical packaging and pin configuration.

Direct/Upgrade Alternatives: Parts from alternative manufacturers (Rohm Semiconductor, Diodes Incorporated, STMicroelectronics) meeting or exceeding electrical requirements with compatible packaging.

Parameter Comparison

Part Number	Manufacturer	Package	Output Type	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent (Max)	Temp Range	Status	Packaging
LM293DRE4	Texas Instruments	8-SOIC	OC/OD/R2R	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-25°C ~ 85°C	Obsolete	Tape & Reel
LM293DR	Texas Instruments	8-SOIC	OC/OD/R2R	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-25°C ~ 85°C	Active	Cut Tape & Digi-Reel
LM293DRG3	Texas Instruments	8-SOIC	OC/OD/R2R	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-25°C ~ 85°C	Active	Tape & Reel
BA10393F-E2	Rohm Semiconductor	8-SOP	OC	2V~36V / ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active	Cut Tape & Digi-Reel
AS393MTR-E1	Diodes Incorporated	8-SOIC	OC	2V~36V / ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active	Tape & Reel
AS393MTR-G1	Diodes Incorporated	8-SOIC	OC	2V~36V / ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active	Cut Tape & Digi-Reel
LM193DT	STMicroelectronics	8-SOIC	OC/R2R	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	18mA @ 5V	2.5mA	-55°C ~ 125°C	Active	Cut Tape & Digi-Reel
LM2903WDT	STMicroelectronics	8-SOIC	OC/R2R	2V~36V / ±1V~18V	7mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	Tape & Reel
LM2903WYDT	STMicroelectronics	8-SOIC	OC/R2R	2V~36V / ±1V~18V	7mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Active	Cut Tape & Digi-Reel
LM293DT	STMicroelectronics	8-SOIC	OC/OD/R2R	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	18mA @ 5V	2.5mA	-40°C ~ 105°C	Active	Cut Tape & Digi-Reel
AS393AMTR-E1	Diodes Incorporated	8-SOIC	OC	2V~36V / ±1V~18V	3mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active	Tape & Reel

Engineering Selection Recommendations

Primary Recommendation - Texas Instruments LM293 Series:

LM293DR and LM293DRG3 are the preferred substitutes, offering identical electrical specifications to the LM293DRE4 with active product status. Both maintain the full open-collector, open-drain, and rail-to-rail output configuration. LM293DR is available in Cut Tape & Digi-Reel packaging, while LM293DRG3 is supplied in Tape & Reel format. Both are ROHS3 compliant with MSL-1 rating and unlimited moisture sensitivity tolerance.

Secondary Recommendation - STMicroelectronics LM293DT:

LM293DT from STMicroelectronics provides identical electrical performance with extended operating temperature range (-40°C to 105°C) and maintains the complete output type specification (open-collector, open-drain, rail-to-rail). This part is suitable for applications requiring broader temperature operation while preserving all functional characteristics of the original LM293DRE4.

Alternative Options - Diodes Incorporated AS393 Series:

AS393AMTR-E1 and AS393MTR variants meet all critical electrical requirements with active status. These parts feature lower input offset voltage (3mV to 5mV) and reduced quiescent current (1mA), offering improved performance characteristics. AS393AMTR-E1 is MFR recommended by Diodes Incorporated. Note: AS393 series parts have MSL-3 rating (168 hours) for AS393MTR variants, requiring moisture control during storage and handling.

Alternative Option - Rohm Semiconductor BA10393F-E2:

BA10393F-E2 meets electrical specifications with extended operating temperature range (-40°C to 85°C) and reduced quiescent current (1mA). Package width is 4.40mm versus 3.90mm for standard 8-SOIC, requiring PCB layout verification for pin-to-pin compatibility.

Compliance Status:

All recommended substitutes are ROHS3 compliant and REACH unaffected. All parts carry EAR99 export classification and HTSUS code 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can LM293DR directly replace LM293DRE4 without circuit modification?

A: Yes. LM293DR is electrically and functionally identical to LM293DRE4, with matching pin configuration, output types, and electrical specifications. The only difference is product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel vs. Tape & Reel). No circuit changes are required.

Q: What is the difference between LM293DR and LM293DRG3?

A: Both parts are parametrically equivalent with identical electrical specifications. The difference is packaging: LM293DR is supplied in Cut Tape & Digi-Reel format, while LM293DRG3 is supplied in Tape & Reel format. Selection depends on procurement and assembly requirements.

Q: Are Diodes Incorporated AS393 parts suitable replacements?

A: Yes, AS393AMTR-E1 and AS393MTR variants meet all critical electrical requirements and are pin-compatible in 8-SOIC packaging. These parts offer improved specifications (lower input offset voltage and quiescent current). However, AS393MTR variants carry MSL-3 rating, requiring controlled moisture storage conditions (168-hour limit after bag opening). AS393AMTR-E1 has MSL-1 rating with unlimited moisture tolerance.

Q: Why does BA10393F-E2 have a different package width?

A: BA10393F-E2 uses 8-SOP packaging with 4.40mm width, compared to standard 8-SOIC at 3.90mm width. While pin count and spacing are compatible, PCB layout must be verified to ensure the wider package does not create clearance issues with adjacent components or traces.

Q: Can I use LM2903WDT or LM2903WYDT as substitutes?

A: Yes, both LM2903 variants meet electrical requirements and are pin-compatible. LM2903WDT is supplied in Tape & Reel format, while LM2903WYDT is available in Cut Tape & Digi-Reel format with automotive qualification (AEC-Q100). Input offset voltage is slightly higher (7mV vs. 5mV), which is acceptable for most general-purpose comparator applications. LM2903WYDT is suitable for automotive-grade designs.

Q: What is the significance of MSL rating differences?

A: MSL-1 (unlimited) parts like LM293DRE4, LM293DR, and LM293DRG3 have no moisture sensitivity restrictions and can be stored indefinitely in sealed packaging. MSL-3 parts like AS393MTR variants must be used within 168 hours of bag opening. For high-volume production with extended lead times, MSL-1 rated parts reduce supply chain risk.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all recommended substitutes are ROHS3 compliant. This ensures compatibility with modern manufacturing processes and regulatory requirements across global markets.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message