LM393FV-E2 Equivalent & Substitute Parts

Part Overview

The LM393FV-E2 is a general-purpose dual comparator integrated circuit manufactured by Rohm Semiconductor in an 8-SSOP surface-mount package. This device features open-collector outputs and operates across a wide supply voltage range of 3V to 32V (single supply) or ±1.5V to ±16V (dual supply). The part is currently in active production status with 3,558 units in stock.

Substitute parts are necessary when the 8-SSOP-B package is unavailable, when alternative supply voltage ranges are required, or when different packaging formats (surface-mount or through-hole) are needed for specific application requirements.

Key Parameters

Parameter	Value
Number of Elements	2
Output Type	Open-Collector
Voltage - Supply, Single/Dual (±)	3V ~ 32V, ±1.5V ~ 16V
Voltage - Input Offset (Max)	4.5mV @ 1.4V
Current - Input Bias (Max)	0.05µA @ 1.4V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	1mA
Operating Temperature	-40°C ~ 85°C
Package / Case	8-LSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM393FV-E2 is determined by the following critical parameters:

Functional Equivalence Criteria:

Dual comparator configuration (2 elements)
Open-collector output type
General-purpose comparator classification
Operating temperature range: -40°C to 85°C
RoHS3 compliance and REACH unaffected status

Package and Mounting Considerations: Substitute parts are grouped into three categories based on package type: 8-SOIC surface-mount variants, 8-MSOP surface-mount variants, and 8-DIP through-hole variants. Each package maintains the same pin count and functional pinout compatibility.

Supply Voltage Range Compatibility: The LM393FV-E2 operates at 3V ~ 32V (single) or ±1.5V ~ 16V (dual). Substitute parts from Diodes Incorporated (AS393 series) support 2V ~ 36V (single) or ±1V ~ 18V (dual), providing broader supply voltage coverage. Substitute parts from Diodes Incorporated (AZV393 series) and Texas Instruments (LMV393 series) operate at narrower ranges (2.5V ~ 5.5V or 2.7V ~ 5.5V), suitable for low-voltage applications only.

Output Current Capability: The LM393FV-E2 provides 16mA typical output current at 5V. The AZV393 and LMV393 series provide higher output current (84mA typical), while AS393 series maintains 16mA compatibility.

Parameter Comparison

Part Number	Manufacturer	Package Type	Supply Voltage (Single/Dual)	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Product Status	MSL
LM393FV-E2	Rohm Semiconductor	8-LSSOP	3V~32V, ±1.5V~16V	4.5mV @ 1.4V	0.05µA @ 1.4V	16mA @ 5V	1mA	Active	1
AS393AMTR-E1	Diodes Incorporated	8-SOIC	2V~36V, ±1V~18V	3mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	Active	1
AS393MTR-E1	Diodes Incorporated	8-SOIC	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	Active	3
AS393MTR-G1	Diodes Incorporated	8-SOIC	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	Active	3
AS393P-E1	Diodes Incorporated	8-DIP	2V~36V, ±1V~18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	Active	1
AZV393MMTR-G1	Diodes Incorporated	8-MSOP	2.5V~5.5V	7mV @ 5V	0.25µA @ 5V	84mA @ 5V	200µA	Active	3
AZV393MTR-G1	Diodes Incorporated	8-SOIC	2.5V~5.5V	7mV @ 5V	0.25µA @ 5V	84mA	200µA	Active	3
LMV393ID	Texas Instruments	8-SOIC	2.7V~5.5V	7mV @ 5V	0.25µA @ 5V	84mA @ 5V	250µA	Last Time Buy	1
LMV393IDR	Texas Instruments	8-SOIC	2.7V~5.5V	7mV @ 5V	0.25µA @ 5V	84mA @ 5V	250µA	Active	1

Engineering Selection Recommendations

Primary Substitutes (Functionally Equivalent, Same Output Current):

The AS393AMTR-E1, AS393MTR-E1, AS393MTR-G1, and AS393P-E1 from Diodes Incorporated maintain the 16mA output current specification of the LM393FV-E2. These parts are functionally equivalent and differ only in package format and supply voltage range. All are RoHS3 compliant and REACH unaffected.

AS393AMTR-E1: 8-SOIC surface-mount with MSL 1 rating. Supports extended supply voltage range (2V~36V single, ±1V~18V dual). Recommended for applications requiring unlimited moisture sensitivity handling.
AS393MTR-E1 and AS393MTR-G1: 8-SOIC surface-mount variants with MSL 3 rating (168 hours). Support extended supply voltage range. Packaging differs (Tape & Reel versus Cut Tape & Digi-Reel).
AS393P-E1: 8-DIP through-hole package with MSL 1 rating. Supports extended supply voltage range. Suitable for breadboard prototyping and legacy through-hole PCB designs.

Secondary Substitutes (Higher Output Current, Restricted Supply Voltage):

The AZV393MMTR-G1, AZV393MTR-G1, LMV393ID, and LMV393IDR provide 84mA output current, significantly higher than the LM393FV-E2. These parts operate only at 2.5V~5.5V (AZV393 series) or 2.7V~5.5V (LMV393 series), restricting use to low-voltage applications.

AZV393MMTR-G1: 8-MSOP surface-mount with 450ns propagation delay specification. MSL 3 rating.
AZV393MTR-G1: 8-SOIC surface-mount. MSL 3 rating.
LMV393IDR: 8-SOIC surface-mount from Texas Instruments with active product status. MSL 1 rating. 600ns propagation delay specification.
LMV393ID: 8-SOIC surface-mount from Texas Instruments with Last Time Buy status. MSL 1 rating. Not recommended for new designs.

Selection Criteria:

Choose AS393 series substitutes when the application requires the original 16mA output current specification or operates at supply voltages outside the 2.5V~5.5V range. Choose AZV393 or LMV393 series only when higher output current (84mA) is required and supply voltage is restricted to low-voltage operation.

Frequently Asked Questions (FAQ)

Q: Can the AS393AMTR-E1 directly replace the LM393FV-E2?

A: The AS393AMTR-E1 is functionally equivalent in terms of comparator operation, output type, element count, and output current. The primary difference is the package format: 8-SOIC versus 8-LSSOP. Both are surface-mount packages with different physical dimensions. PCB layout modification is required. The AS393AMTR-E1 supports a broader supply voltage range (2V~36V single, ±1V~18V dual) compared to the LM393FV-E2 (3V~32V single, ±1.5V~16V dual).

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

A: Both parts are identical in electrical specifications and package type (8-SOIC). The difference is in packaging format: AS393MTR-E1 is supplied in Tape & Reel, while AS393MTR-G1 is supplied in Cut Tape & Digi-Reel. Both have MSL 3 rating (168 hours moisture sensitivity). Selection depends on procurement and assembly requirements.

Q: Why do AZV393 and LMV393 series have higher output current?

A: The AZV393 and LMV393 series are optimized for low-voltage operation (2.5V~5.5V and 2.7V~5.5V respectively) and provide 84mA output current compared to 16mA in the LM393FV-E2. These parts are not direct substitutes due to restricted supply voltage range and higher quiescent current (200µA to 250µA versus 1mA). Use only when higher output current is required and supply voltage constraints are acceptable.

Q: Is the AS393P-E1 suitable for surface-mount assembly?

A: No. The AS393P-E1 is an 8-DIP through-hole package. It is suitable for breadboard prototyping, legacy PCB designs, and applications requiring through-hole mounting. For surface-mount assembly, use AS393AMTR-E1, AS393MTR-E1, AS393MTR-G1, AZV393MMTR-G1, AZV393MTR-G1, LMV393ID, or LMV393IDR.

Q: What does MSL 1 versus MSL 3 mean for component handling?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture control. MSL 3 indicates a maximum of 168 hours of exposure to 30°C/85% relative humidity before the component must be baked. The LM393FV-E2 has MSL 1. Substitute parts with MSL 3 (AS393MTR-E1, AS393MTR-G1, AZV393MMTR-G1, AZV393MTR-G1) require moisture control during storage and handling.

Q: Can I use LMV393ID for new designs?

A: LMV393ID has Last Time Buy status, indicating production is being discontinued. LMV393IDR from the same manufacturer has Active status and is recommended for new designs. Both have identical electrical specifications and 8-SOIC packaging.

Q: What is the impact of different input offset voltages across substitute parts?

A: The LM393FV-E2 specifies 4.5mV input offset at 1.4V. Substitute parts specify input offset at 5V: AS393AMTR-E1 at 3mV, AS393MTR-E1 and AS393MTR-G1 at 5mV, AS393P-E1 at 5mV, and AZV393/LMV393 series at 7mV. These differences are within typical comparator specifications and do not affect functional substitution for general-purpose applications. Applications requiring precise offset matching should evaluate specific test data.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected, matching the compliance status of the LM393FV-E2.

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