LM393F-E2 Equivalent & Substitute Parts

Part Overview

The LM393F-E2 is a dual general-purpose comparator manufactured by Rohm Semiconductor in an 8-SOP surface-mount package. This active product operates across a wide supply voltage range of 3V to 32V (single supply) or ±1.5V to ±16V (dual supply), with open-collector output configuration suitable for logic-level interfacing. The device is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original LM393F-E2 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements demand different electrical performance characteristics within the comparator category.

Key Parameters

Parameter	LM393F-E2
Manufacturer	Rohm Semiconductor
Package Type	8-SOIC (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Number of Elements	2
Output Type	Open-Collector
Supply Voltage Range	3V ~ 32V (Single), ±1.5V ~ 16V (Dual)
Input Offset Voltage (Max)	4.5mV @ 32V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	16mA @ 5V
Quiescent Current (Max)	1mA
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM393F-E2 is determined by the following criteria:

Primary Compatibility Factors:

Dual comparator configuration (2 elements per package)
Open-collector output topology
General-purpose comparator classification
Operating temperature range: -40°C to 85°C
ROHS3 compliance and EAR99 export classification

Acceptable Variations:

Supply voltage range may extend beyond the original specification (wider ranges are acceptable)
Input offset voltage may be higher (within engineering tolerance)
Package format may differ (8-SOIC, 8-MSOP, 8-TSSOP, 8-DIP all acceptable for functional equivalence)
Mounting type may change (surface mount to through-hole or vice versa)
Quiescent current may be higher (within acceptable power budget)
Output current capability may exceed the original specification

Non-Substitutable Characteristics:

Number of comparator elements must remain 2
Output type must remain open-collector or compatible logic output
Operating temperature range must not be narrower than -40°C to 85°C
RoHS compliance status must be maintained

Parameter Comparison

Part Number	Manufacturer	Package	Mount Type	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Temp Range	RoHS Status	MSL
LM393F-E2	Rohm Semiconductor	8-SOIC (4.40mm)	Surface Mount	3V~32V / ±1.5V~16V	4.5mV @ 32V	16mA @ 5V	1mA	-40°C ~ 85°C	ROHS3	1
AS393MTR-E1	Diodes Incorporated	8-SOIC (3.90mm)	Surface Mount	2V~36V / ±1V~18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	ROHS3	3
AS393MMTR-G1	Diodes Incorporated	8-MSOP (3.00mm)	Surface Mount	2V~36V / ±1V~18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	ROHS3	3
AS393P-E1	Diodes Incorporated	8-DIP (7.62mm)	Through Hole	2V~36V / ±1V~18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	ROHS3	1
LMV393IPWR	National Semiconductor	8-TSSOP (4.40mm)	Surface Mount	2.7V~5.5V / N/A	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Not Specified	Not Specified
LMV393IDGKR	Texas Instruments	8-VSSOP (3.00mm)	Surface Mount	2.7V~5.5V / N/A	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	ROHS3	1
LMV393MX/NOPB	Texas Instruments	8-SOIC (3.90mm)	Surface Mount	2.7V~5.5V / N/A	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	ROHS3	1
LMV393MMX/NOPB	Texas Instruments	8-VSSOP (3.00mm)	Surface Mount	2.7V~5.5V / N/A	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	ROHS3	1

Engineering Selection Recommendations

AS393 Series (Diodes Incorporated) — Direct functional equivalents with extended supply voltage range (2V to 36V). The AS393MTR-E1 maintains identical 8-SOIC package footprint compatibility. The AS393P-E1 provides through-hole mounting for legacy PCB designs. All AS393 variants are ROHS3 compliant and active products. MSL rating of 3 requires 168-hour dry storage consideration for high-humidity environments.

LMV393 Series (Texas Instruments / National Semiconductor) — Restricted to 2.7V to 5.5V supply range, unsuitable for applications requiring the full 3V to 32V capability of the LM393F-E2. Output current capability is significantly higher (84mA typical), and quiescent current is elevated (250µA to 300µA). These devices are appropriate only when supply voltage is constrained to the 2.7V to 5.5V window and higher output drive is beneficial. ROHS3 compliance confirmed for Texas Instruments variants.

Packaging Considerations: AS393MTR-E1 and LMV393MX/NOPB maintain 8-SOIC package format with minor footprint variations (3.90mm vs. 4.40mm width). AS393MMTR-G1 and LMV393 VSSOP variants use compact 8-MSOP/8-VSSOP packages (3.00mm width) for space-constrained designs. AS393P-E1 is the only through-hole option for PCB assembly processes requiring DIP mounting.

Frequently Asked Questions (FAQ)

Q: Can I use LMV393 series parts as direct replacements for LM393F-E2?

A: LMV393 parts are functionally equivalent only in applications where supply voltage does not exceed 5.5V. The LM393F-E2 supports up to 32V single supply or ±16V dual supply. If your circuit operates within the 2.7V to 5.5V range, LMV393 variants are acceptable. Otherwise, use AS393 series parts.

Q: What is the difference between AS393MTR-E1 and AS393MMTR-G1?

A: Both are Diodes Incorporated AS393 comparators with identical electrical specifications. AS393MTR-E1 uses 8-SOIC package (3.90mm width) in tape-and-reel packaging. AS393MMTR-G1 uses 8-MSOP package (3.00mm width), a more compact footprint. Select based on PCB layout requirements and available component placement area.

Q: Is AS393P-E1 suitable for new designs?

A: AS393P-E1 is an active product in 8-DIP through-hole package. It is appropriate for designs using through-hole assembly or breadboard prototyping. For surface-mount production, AS393MTR-E1 or AS393MMTR-G1 are preferred.

Q: What does MSL 3 mean for AS393 parts?

A: MSL (Moisture Sensitivity Level) 3 requires components to be stored in dry conditions and used within 168 hours of opening the moisture barrier bag. MSL 1 (LM393F-E2, LMV393 variants) has unlimited shelf life. For high-volume manufacturing with extended lead times, verify moisture handling procedures.

Q: Can I substitute LM393F-E2 with LMV393IPWR in a 12V application?

A: No. LMV393IPWR maximum supply voltage is 5.5V. A 12V application requires AS393 series parts, which support up to 36V supply voltage.

Q: Are all substitute parts ROHS3 compliant?

A: AS393 series (all variants) and Texas Instruments LMV393 variants are ROHS3 compliant. National Semiconductor LMV393IPWR does not specify RoHS status in the provided data. Verify compliance documentation with your supplier if RoHS certification is a procurement requirement.

Q: What is the footprint difference between 8-SOIC and 8-MSOP packages?

A: 8-SOIC (Small Outline Integrated Circuit) has a body width of 3.90mm to 4.40mm. 8-MSOP (Mini Small Outline Package) has a body width of 3.00mm. MSOP is more compact and suitable for high-density PCB layouts. Both are surface-mount packages with identical pin pitch (1.27mm).

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