LM2903F-E2 Equivalent & Substitute Parts

Part Overview

The LM2903F-E2 is a dual general-purpose comparator manufactured by Rohm Semiconductor in an 8-SOP surface-mount package. This device features open-collector output configuration and operates across a wide supply voltage range of 3V to 32V (single supply) or ±1.5V to ±16V (dual supply). The comparator is designed for general-purpose signal comparison applications requiring low input offset voltage and minimal input bias current. The product maintains Active status with 1,968 units in current inventory. Equivalent and substitute parts are necessary when addressing supply chain constraints, specific packaging requirements, temperature range specifications, or performance parameter optimization for particular application requirements.

Key Parameters

Parameter	LM2903F-E2
Manufacturer	Rohm Semiconductor
Package Type	8-SOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Number of Elements	2
Output Type	Open-Collector
Voltage Supply (Single/Dual)	3V ~ 32V, ±1.5V ~ 16V
Input Offset Voltage (Max)	4.5mV @ 1.4V
Input Bias Current (Max)	0.05µA @ 1.4V
Output Current (Typ)	16mA @ 5V
Quiescent Current (Max)	1mA
Operating Temperature	-40°C ~ 125°C
Product Status	Active
RoHS Compliance	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM2903F-E2 is determined by the following critical parameters: dual-element general-purpose comparator configuration, open-collector output topology, supply voltage compatibility, input offset voltage specification, input bias current rating, output current capability, quiescent current consumption, operating temperature range, and surface-mount packaging format.

The substitute parts are grouped into three functional categories based on these parameters:

Category 1: Direct Surface-Mount Substitutes (8-SOIC/8-SOP Packages) These parts maintain the same dual-comparator architecture with open-collector outputs in surface-mount packages compatible with the original 8-SOP footprint. Parts in this category include AS393AMTR-G1, AZV393MTR-G1, LMV393ID, LMV393IPW, LMV393M/NOPB, LMV393MX, and LMV393QDRQ1. These devices support the core application requirements with variations in supply voltage range, input offset voltage, and quiescent current specifications.

Category 2: Through-Hole Alternative (8-DIP Package) The AS393P-E1 provides equivalent functionality in a through-hole 8-DIP package format, suitable for applications requiring through-hole mounting technology instead of surface-mount assembly.

Category 3: Extended Temperature Range Variant The LMV393QDRQ1 extends the operating temperature range to -40°C to 125°C with automotive-grade qualification (AEC-Q100), matching the original LM2903F-E2 temperature specification while providing automotive-qualified performance.

Parameter Comparison

Parameter	LM2903F-E2	AS393AMTR-G1	AS393P-E1	AZV393MTR-G1	LMV393ID	LMV393IPW	LMV393M/NOPB	LMV393MX	LMV393QDRQ1	LMV393S-13
Manufacturer	Rohm	Diodes Inc.	Diodes Inc.	Diodes Inc.	TI	TI	TI	TI	TI	Diodes Inc.
Package	8-SOP	8-SOIC	8-DIP	8-SOIC	8-SOIC	8-TSSOP	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Through Hole	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Number of Elements	2	2	2	2	2	2	2	2	2	2
Output Type	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector	Open-Collector	CMOS, Open-Collector, TTL	CMOS, Open-Collector, TTL	Open-Collector	Open-Collector
Supply Voltage (Single/Dual)	3V ~ 32V, ±1.5V ~ 16V	2V ~ 36V, ±1V ~ 18V	2V ~ 36V, ±1V ~ 18V	2.5V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Input Offset Voltage (Max)	4.5mV @ 1.4V	3mV @ 1.4V	5mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V	7mV @ 5V
Input Bias Current (Max)	0.05µA @ 1.4V	0.4µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.25µA @ 5V	0.025µA @ 5V	0.25µA @ 5V
Output Current (Typ)	16mA @ 5V	16mA	16mA @ 5V	84mA	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V	84mA @ 5V
Quiescent Current (Max)	1mA	1mA	1mA	200µA	250µA	250µA	300µA	300µA	250µA	200µA
Propagation Delay (Max)	—	—	—	—	600ns	600ns	600ns	600ns	600ns	450ns
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Active	Active	Active	Active	Last Time Buy	Last Time Buy	Active	Last Time Buy	Active	Active
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

For Extended Temperature Range Applications (-40°C to 125°C)

The LMV393QDRQ1 provides direct functional equivalence to the LM2903F-E2 across the full operating temperature range. This part maintains Active product status with automotive-grade qualification (AEC-Q100) and carries MSL 1 moisture sensitivity rating. The LMV393QDRQ1 features superior input bias current specification (0.025µA maximum) and delivers 84mA typical output current. This device is suitable for applications requiring extended temperature performance with automotive-qualified reliability.

The LMV393S-13 also extends the operating temperature range to -40°C to 125°C with Active product status. This part offers 450ns propagation delay specification and 200µA maximum quiescent current, with MSL 3 moisture sensitivity rating.

For Standard Temperature Range Applications (-40°C to 85°C)

The AS393AMTR-G1 provides the closest electrical match to the LM2903F-E2 within the standard temperature range. This device features 3mV maximum input offset voltage (superior to the original 4.5mV specification), maintains 16mA typical output current, and carries Active product status with MSL 1 moisture sensitivity. The AS393AMTR-G1 supports supply voltages from 2V to 36V (±1V to ±18V), exceeding the original specification range.

For Reduced Quiescent Current Requirements

The AZV393MTR-G1 and LMV393 series devices (LMV393ID, LMV393IPW, LMV393M/NOPB, LMV393MX) deliver 84mA typical output current with quiescent current specifications ranging from 200µA to 300µA. These parts are suitable for applications where higher output drive capability is required. The AZV393MTR-G1 operates within the 2.5V to 5.5V supply range with 200µA maximum quiescent current.

For Through-Hole Assembly Requirements

The AS393P-E1 provides equivalent functionality in an 8-DIP through-hole package format. This device maintains Active product status with 40,200 units in inventory, supports 2V to 36V supply voltage range, and carries MSL 1 moisture sensitivity rating. The AS393P-E1 is suitable for applications requiring through-hole mounting technology.

Product Status Considerations

The LM2903F-E2 maintains Active product status. Among substitute parts, AS393AMTR-G1, AS393P-E1, LMV393M/NOPB, LMV393QDRQ1, and LMV393S-13 carry Active status. The LMV393ID, LMV393IPW, and LMV393MX are designated Last Time Buy, indicating limited future availability.

Frequently Asked Questions (FAQ)

Q: Can the LMV393IPW substitute for the LM2903F-E2 in all applications?

A: The LMV393IPW provides functional equivalence for applications operating within the 2.7V to 5.5V supply voltage range. The original LM2903F-E2 supports extended supply voltages up to 32V (single supply) or ±16V (dual supply). The LMV393IPW is suitable only for applications within its specified voltage range. The LMV393IPW carries Last Time Buy status, indicating limited future availability.

Q: What is the primary difference between the AS393AMTR-G1 and the LMV393MX?

A: The AS393AMTR-G1 operates across 2V to 36V supply voltage range with 16mA typical output current and 1mA maximum quiescent current. The LMV393MX operates within 2.7V to 5.5V supply voltage range with 84mA typical output current and 300µA maximum quiescent current. The AS393AMTR-G1 is suitable for wide-supply-voltage applications, while the LMV393MX provides higher output current capability for low-voltage applications. The LMV393MX carries Last Time Buy status.

Q: Is the AS393P-E1 a direct replacement for the LM2903F-E2?

A: The AS393P-E1 provides equivalent electrical functionality but differs in package format. The LM2903F-E2 uses an 8-SOP surface-mount package, while the AS393P-E1 uses an 8-DIP through-hole package. The AS393P-E1 is suitable only for applications where through-hole mounting is required or preferred. Both devices maintain Active product status and MSL 1 moisture sensitivity rating.

Q: Which substitute part best matches the LM2903F-E2 operating temperature range?

A: The LMV393QDRQ1 and LMV393S-13 both extend the operating temperature range to -40°C to 125°C, matching the original LM2903F-E2 specification. The LMV393QDRQ1 carries Active product status with automotive-grade qualification (AEC-Q100) and features superior input bias current specification (0.025µA maximum). The LMV393S-13 carries Active product status with 450ns propagation delay specification.

Q: What are the moisture sensitivity implications when selecting a substitute part?

A: The LM2903F-E2 carries MSL 1 (Unlimited) moisture sensitivity rating. Substitute parts AS393AMTR-G1, AS393P-E1, LMV393ID, LMV393IPW, LMV393M/NOPB, LMV393MX, and LMV393QDRQ1 also carry MSL 1 rating. The AZV393MTR-G1 and LMV393S-13 carry MSL 3 (168 Hours) rating, requiring controlled moisture exposure during storage and handling. MSL 1 devices have unlimited shelf life under normal storage conditions, while MSL 3 devices require baking if moisture absorption limits are exceeded.

Q: Can the LMV393QDRQ1 be used in non-automotive applications?

A: The LMV393QDRQ1 carries automotive-grade qualification (AEC-Q100) but is not restricted to automotive applications. This device provides equivalent functionality to the LM2903F-E2 with extended temperature range (-40°C to 125°C) and superior input bias current specification (0.025µA maximum). The automotive qualification indicates enhanced reliability and process control, making it suitable for any application requiring these performance characteristics.

Q: What is the significance of "Last Time Buy" product status?

A: Parts designated Last Time Buy (LMV393ID, LMV393IPW, LMV393MX) indicate that the manufacturer has announced end-of-life for these devices. New orders may be accepted for a limited period, but future availability is not guaranteed. For long-term production requirements, parts with Active status (AS393AMTR-G1, AS393P-E1, LMV393M/NOPB, LMV393QDRQ1, LMV393S-13) are recommended.

Q: How do the output current specifications affect device selection?

A: The LM2903F-E2 delivers 16mA typical output current at 5V. Substitute parts AS393AMTR-G1 and AS393P-E1 maintain 16mA typical output current, suitable for direct replacement in existing designs. The LMV393 series devices (LMV393ID, LMV393IPW, LMV393M/NOPB, LMV393MX, LMV393QDRQ1) and AZV393MTR-G1 deliver 84mA typical output current, providing higher drive capability for applications requiring increased output current. The AZV393MTR-G1 and LMV393S-13 deliver 84mA typical output current with lower quiescent current consumption.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed (AS393AMTR-G1, AS393P-E1, AZV393MTR-G1, LMV393ID, LMV393IPW, LMV393M/NOPB, LMV393MX, LMV393QDRQ1, LMV393S-13) carry ROHS3 Compliant certification, matching the original LM2903F-E2 compliance status. All parts are REACH Unaffected and carry EAR99 export classification.

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