AS393AMTR-E1 Equivalent & Substitute Parts

Part Overview

The AS393AMTR-E1 is a dual general-purpose comparator manufactured by Diodes Incorporated, designed for open-collector output applications across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply). The device is housed in an 8-SOIC surface-mount package and operates across the industrial temperature range of -40°C to 85°C. This part is currently in active production status with substantial inventory availability (232,200 pieces).

Equivalent and substitute parts are necessary when the original AS393AMTR-E1 becomes unavailable, when alternative packaging formats are required for specific PCB layouts, or when design requirements necessitate different thermal or electrical performance characteristics within the same functional class.

Key Parameters

Parameter	Value
Type	General Purpose Comparator
Number of Elements	2
Output Type	Open-Collector
Voltage Supply (Single/Dual)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	3mV @ 5V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	16mA @ 5V
Current - Quiescent (Max)	1mA
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the AS393AMTR-E1 is determined by the following critical parameters:

Functional equivalence: Dual general-purpose comparator with open-collector output
Supply voltage compatibility: Parts must support the 2V ~ 36V single-supply range or ±1V ~ ±18V dual-supply range
Input offset voltage: Maximum 3mV to 7mV @ 5V is acceptable for general-purpose applications
Input bias current: Maximum 0.25µA @ 5V
Output current capability: Minimum 16mA @ 5V typical
Quiescent current: Maximum 1mA
Operating temperature: -40°C to 85°C minimum
Package compatibility: 8-pin surface-mount packages (SOIC, SOP, MSOP, SSOP, VSSOP, TSSOP)
Compliance: ROHS3 compliant, MSL 1

Substitute parts are grouped by package type and manufacturer, with variations in input offset voltage (up to 7mV), output current capability (up to 84mA), and operating temperature range (up to 125°C) representing acceptable deviations for general-purpose comparator applications.

Parameter Comparison

Part Number	Manufacturer	Package Type	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
AS393AMTR-E1	Diodes Incorporated	8-SOIC	3mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
BA10393F-E2	Rohm Semiconductor	8-SOP	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
BA2903FVM-TR	Rohm Semiconductor	8-MSOP	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	Active
BA2903SF-E2	Rohm Semiconductor	8-SOP	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 105°C	Active
BA2903SFV-E2	ROHM Semiconductor	8-SSOP-B	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 105°C	Active
LMV393IDDUR	Texas Instruments	8-VSSOP	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Last Time Buy
LMV393IDR	Texas Instruments	8-SOIC	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Active
LMV393IPWR	National Semiconductor	8-TSSOP	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Active
LMV393M/NOPB	Texas Instruments	8-SOIC	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Active
LMV393MM/NOPB	Texas Instruments	8-VSSOP	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Direct Package Match (8-SOIC): LMV393IDR and LMV393M/NOPB are pin-compatible 8-SOIC alternatives to the AS393AMTR-E1. Both are ROHS3 compliant with MSL 1 rating. LMV393IDR maintains active production status, while LMV393M/NOPB is also active. Both support the required -40°C to 85°C operating range. The higher output current capability (84mA vs. 16mA) and increased quiescent current (250µA to 300µA vs. 1mA) represent performance enhancements suitable for applications requiring greater output drive capability.

Rohm Semiconductor Alternatives: BA10393F-E2, BA2903FVM-TR, BA2903SF-E2, and BA2903SFV-E2 are all ROHS3 compliant with MSL 1 rating and active production status. These parts offer different package formats (8-SOP, 8-MSOP, 8-SSOP-B) for layout flexibility. BA2903FVM-TR extends the operating temperature to 125°C, providing enhanced thermal performance. Input offset voltage increases to 5mV or 7mV, which remains within acceptable limits for general-purpose comparator applications.

Texas Instruments LMV393 Series: LMV393IDDUR is designated as Last Time Buy and should be avoided for new designs. LMV393IDR, LMV393IPWR, LMV393M/NOPB, and LMV393MM/NOPB are all active production parts with ROHS3 compliance and MSL 1 rating. These parts feature higher output current (84mA) and are suitable for applications requiring increased output drive capability while maintaining the -40°C to 85°C operating range.

Frequently Asked Questions (FAQ)

Q: Can I use LMV393IDR as a direct replacement for AS393AMTR-E1? A: Yes. Both are 8-SOIC surface-mount packages with identical pinouts. LMV393IDR is ROHS3 compliant, MSL 1, and operates across -40°C to 85°C. The higher output current (84mA vs. 16mA) and increased quiescent current (250µA vs. 1mA) are acceptable deviations for general-purpose comparator applications.

Q: What is the difference between the Rohm BA2903 variants? A: BA2903FVM-TR uses 8-MSOP packaging with extended temperature range to 125°C. BA2903SF-E2 and BA2903SFV-E2 use 8-SOP and 8-SSOP-B packaging respectively, with operating temperature to 105°C. All three share identical electrical specifications (7mV input offset, 16mA output current, 1mA quiescent current) and are suitable for different PCB layout requirements.

Q: Why does LMV393IDDUR show "Last Time Buy" status? A: Last Time Buy status indicates the manufacturer is discontinuing this part. New designs should use active production alternatives such as LMV393IDR, LMV393IPWR, LMV393M/NOPB, or LMV393MM/NOPB from the Texas Instruments LMV393 series.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of the AS393AMTR-E1.

Q: What is the significance of input offset voltage differences (3mV vs. 7mV)? A: The AS393AMTR-E1 specifies 3mV maximum input offset at 5V, while most substitutes specify 7mV. For general-purpose comparator applications, this 4mV difference is typically acceptable. Applications requiring precision threshold detection should evaluate the specific offset voltage impact on their circuit performance.

Q: Can I use parts with higher output current (84mA) in place of the 16mA specification? A: Yes. Higher output current capability is a performance enhancement that does not compromise compatibility. Applications designed for 16mA output will function correctly with 84mA-capable parts. Verify that PCB trace sizing and load impedance are appropriate for the actual output current drawn.

Q: Which substitute offers the best thermal performance? A: BA2903FVM-TR extends the operating temperature range to -40°C to 125°C, providing the widest thermal envelope among the substitutes. This is beneficial for applications in high-temperature environments or where thermal margin is critical.

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