AP393AM8G-13 Equivalent & Substitute Parts

Part Overview

The AP393AM8G-13 is a general-purpose dual comparator manufactured by Diodes Incorporated in 8-MSOP surface-mount packaging. This device operates across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply), making it suitable for diverse analog signal conditioning applications. The part is currently active in production with 5,528 units in stock and carries ROHS3 compliance certification.

Substitute parts are identified when equivalent electrical performance can be maintained across critical parameters including supply voltage range, input offset voltage, input bias current, output current capability, and quiescent current consumption, while accommodating different package formats and temperature ratings based on application requirements.

Key Parameters

Parameter	Value	Condition
Supply Voltage Range (Single/Dual)	2V ~ 36V / ±1V ~ 18V	Operating
Input Offset Voltage (Max)	8mV	@ 5V
Input Bias Current (Max)	0.4µA	@ 5V
Output Current (Typ)	16mA	@ 5V
Quiescent Current (Max)	2.5mA	Operating
Number of Elements	2	Dual comparator
Output Type	CMOS, DTL, ECL, MOS, Open-Collector, TTL	Multiple output configurations
Operating Temperature	0°C ~ 70°C	Commercial grade
Package	8-MSOP (0.118", 3.00mm Width)	Surface Mount
RoHS Status	ROHS3 Compliant	Environmental

Substitute Part Grouping Explanation

Equivalent and substitute parts for the AP393AM8G-13 are classified based on strict adherence to the following electrical and mechanical criteria:

Primary Substitution Criteria:

Supply voltage range: 2V ~ 36V (single) or ±1V ~ 18V (dual)
Input offset voltage: Maximum 8mV or better
Input bias current: Maximum 0.4µA or better
Output current: Minimum 16mA capability
Quiescent current: Maximum 2.5mA
Dual comparator configuration (2 elements)
Open-Collector or compatible output type

Secondary Considerations:

Package format (8-MSOP preferred for direct replacement; 8-SOIC, 8-TSSOP, 8-DIP, TO-99-8 acceptable with board layout modification)
Operating temperature range (commercial 0°C ~ 70°C or extended industrial/automotive -40°C ~ 125°C)
Mounting type (surface mount or through-hole)
Compliance certifications (ROHS3, REACH, AEC-Q100 for automotive applications)

All listed substitutes meet or exceed the electrical performance specifications of the AP393AM8G-13 within their respective operating conditions.

Parameter Comparison

Part Number	Manufacturer	Package	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent (Max)	Temp Range	Mount Type
AP393AM8G-13	Diodes Inc.	8-MSOP	2V~36V / ±1V~18V	8mV @ 5V	0.4µA @ 5V	16mA @ 5V	2.5mA	0°C ~ 70°C	Surface Mount
LM193AH/NOPB	Texas Instruments	TO-99-8	2V~36V / ±1V~18V	2mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	-55°C ~ 125°C	Through Hole
LM193DT	STMicroelectronics	8-SOIC	2V~36V / ±1V~18V	5mV @ 30V	0.25µA @ 5V	18mA @ 5V	2.5mA	-55°C ~ 125°C	Surface Mount
LM193H	National Semiconductor	TO-99-8	2V~36V / ±1V~18V	5mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	-55°C ~ 125°C	Through Hole
LM2903AVQDRQ1	Texas Instruments	8-SOIC	2V~36V / ±1V~18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Surface Mount
LM2903AVQPWR	Texas Instruments	8-TSSOP	2V~36V / ±1V~18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Surface Mount
LM2903AVQPWRG4Q1	Texas Instruments	8-TSSOP	2V~36V / ±1V~18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Surface Mount
LM2903DMR2G	onsemi	8-MSOP	2V~36V / ±1V~18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 105°C	Surface Mount
LM2903HYDT	STMicroelectronics	8-SOIC	2V~36V / ±1V~18V	7mV @ 30V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 150°C	Surface Mount
LM2903P	Texas Instruments	8-DIP	2V~36V / ±1V~18V	7mV @ 30V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Through Hole
LM2903QPWRG4Q1	Texas Instruments	8-TSSOP	2V~36V / ±1V~18V	7mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	Surface Mount

Engineering Selection Recommendations

Direct Package Replacement (8-MSOP Surface Mount): LM2903DMR2G (onsemi) provides the closest form-factor match to the AP393AM8G-13. Both devices use 8-MSOP packaging with identical pinout compatibility. The LM2903DMR2G meets all electrical specifications with input offset voltage of 7mV at 30V and maintains the required 2.5mA maximum quiescent current. Operating temperature extends to -40°C ~ 105°C, suitable for industrial applications. ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1) ensure environmental compatibility.

Surface-Mount Alternatives (Different Packages): LM193DT (STMicroelectronics, 8-SOIC) and LM2903AVQDRQ1 (Texas Instruments, 8-SOIC) offer superior electrical performance with input offset voltage of 5mV and 2mV respectively. Both maintain surface-mount compatibility with board layout modification. LM2903AVQDRQ1 includes AEC-Q100 automotive qualification for applications requiring extended reliability assurance.

LM2903AVQPWR and LM2903AVQPWRG4Q1 (Texas Instruments, 8-TSSOP) provide the highest inventory availability (260,300 and 933,868 units respectively) with enhanced output current capability (20mA typical). The G4Q1 variant includes AEC-Q100 qualification for automotive-grade applications.

Through-Hole Alternatives: LM193AH/NOPB (Texas Instruments, TO-99-8) and LM193H (National Semiconductor, TO-99-8) serve applications requiring through-hole mounting. Both deliver superior input offset voltage (2mV and 5mV respectively) and extended operating temperature range (-55°C ~ 125°C). LM2903P (Texas Instruments, 8-DIP) provides standard DIP packaging with 20mA output current capability.

Extended Temperature Applications: LM2903HYDT (STMicroelectronics, 8-SOIC) supports the widest operating temperature range (-40°C ~ 150°C) with AEC-Q100 automotive qualification, suitable for high-temperature industrial and automotive environments.

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original AP393AM8G-13 specification.

Frequently Asked Questions (FAQ)

Q: Can LM2903DMR2G directly replace AP393AM8G-13 without PCB modification? A: Yes. Both devices use identical 8-MSOP packaging with matching pinout. No PCB layout changes are required for direct substitution.

Q: What is the primary difference between LM193 and LM2903 series comparators? A: Both series meet the electrical specifications for AP393AM8G-13 substitution. LM193 variants typically feature lower input offset voltage (2mV to 5mV) and lower input bias current (0.1µA to 0.25µA). LM2903 variants offer higher output current capability (20mA typical) and extended temperature ratings. Selection depends on application requirements and package preference.

Q: Are automotive-grade variants (AEC-Q100) compatible with commercial applications? A: Yes. Automotive-qualified parts (LM2903AVQDRQ1, LM2903AVQPWRG4Q1, LM2903HYDT) exceed commercial-grade specifications and operate reliably in standard commercial environments. They provide additional reliability assurance through formal qualification testing.

Q: What is the impact of different package formats on circuit performance? A: Electrical performance remains equivalent across all package formats (8-MSOP, 8-SOIC, 8-TSSOP, 8-DIP, TO-99-8) when specifications are met. Package selection affects PCB layout, thermal dissipation characteristics, and mounting method. Surface-mount packages (MSOP, SOIC, TSSOP) provide smaller footprints; through-hole packages (DIP, TO-99-8) offer mechanical robustness and manual rework capability.

Q: Which substitute offers the best input offset voltage performance? A: LM193AH/NOPB and LM2903AVQDRQ1 both deliver 2mV maximum input offset voltage, representing the lowest specification among available substitutes. This provides superior precision for low-level signal detection applications.

Q: Can I use LM2903P (8-DIP) in a design originally specified for 8-MSOP? A: Electrical substitution is valid; however, PCB redesign is required. The 8-DIP package has different pinout spacing and through-hole mounting requirements compared to 8-MSOP surface-mount. Verify pinout compatibility and board layout feasibility before implementation.

Q: What inventory considerations apply to high-volume production? A: LM2903AVQPWRG4Q1 (933,868 units) and LM2903AVQPWR (260,300 units) offer the highest stock levels for sustained production runs. LM193DT (78,081 units) provides secondary availability. Confirm lead times and allocation policies with suppliers for critical programs.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental compliance status of AP393AM8G-13. REACH unaffected status is maintained across all variants.

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