AS393PT-G1 Equivalent & Substitute Parts

Part Overview

The AS393PT-G1 is a dual general-purpose comparator manufactured by Diodes Incorporated in 8-DIP through-hole packaging. This device features open-collector output configuration and operates across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply). The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Active alternatives with identical or superior electrical characteristics are available from multiple manufacturers in both through-hole and surface-mount package options.

Key Parameters

Parameter	AS393PT-G1 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)	5mV @ 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-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the AS393PT-G1 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Dual comparator configuration (2 elements)
Open-collector output type
Supply voltage range: minimum 2V ~ 36V single supply or ±1V ~ ±18V dual supply
Input offset voltage: 5mV @ 5V or lower
Input bias current: 0.25µA @ 5V or lower
Output current capability: 16mA @ 5V or higher
Quiescent current: 1mA or lower
Operating temperature range: -40°C minimum to 85°C maximum

Package Compatibility: Through-hole 8-DIP packages provide direct pin-compatible substitution. Surface-mount alternatives (8-SOIC, 8-SSOP, 8-VSSOP, 8-TSSOP) require PCB redesign but offer equivalent electrical performance.

Compliance Requirements: ROHS3 compliance is maintained across all substitute options.

Substitute parts are grouped into two categories: direct through-hole replacements and surface-mount alternatives with superior or equivalent electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Package Type	Mounting	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
AS393PT-G1	Diodes Incorporated	8-DIP	Through Hole	2V ~ 36V, ±1V ~ 18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Obsolete
AS393P-E1	Diodes Incorporated	8-PDIP	Through Hole	2V ~ 36V, ±1V ~ 18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
BA2903FV-E2	Rohm Semiconductor	8-LSSOP	Surface Mount	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	Active
BA2903SFV-E2	ROHM Semiconductor	8-LSSOP	Surface Mount	2V, ±1V ~ 36V, ±18V	7mV @ 5V	16mA @ 5V	1mA	-40°C ~ 105°C	Active
LMV393IDGKR	Texas Instruments	8-VSSOP	Surface Mount	2.7V ~ 5.5V	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Active
LMV393IPWR	National Semiconductor	8-TSSOP	Surface Mount	2.7V ~ 5.5V	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 85°C	Active
LMV393M	Texas Instruments	8-SOIC	Surface Mount	2.7V ~ 5.5V	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Obsolete
LMV393MM/NOPB	Texas Instruments	8-VSSOP	Surface Mount	2.7V ~ 5.5V	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Active
LMV393MX	Texas Instruments	8-SOIC	Surface Mount	2.7V ~ 5.5V	7mV @ 5V	84mA @ 5V	300µA	-40°C ~ 85°C	Last Time Buy
LMV393QDRQ1	Texas Instruments	8-SOIC	Surface Mount	2.7V ~ 5.5V	7mV @ 5V	84mA @ 5V	250µA	-40°C ~ 125°C	Active

Engineering Selection Recommendations

For Direct Through-Hole Replacement: AS393P-E1 is the primary equivalent for AS393PT-G1. Both parts are manufactured by Diodes Incorporated, share identical electrical specifications, and use compatible 8-DIP through-hole packaging. AS393P-E1 maintains active product status with 40,200 units in stock, ensuring long-term availability and supply chain continuity.

For Surface-Mount Applications Requiring Wide Supply Voltage Range: BA2903FV-E2 and BA2903SFV-E2 from Rohm Semiconductor maintain the full 2V ~ 36V supply voltage range of the original part while offering surface-mount 8-LSSOP packaging. Both parts are active and ROHS3 compliant. BA2903FV-E2 extends operating temperature to -40°C ~ 125°C, providing enhanced thermal performance.

For Surface-Mount Applications with Restricted Supply Voltage: LMV393IDGKR, LMV393IPWR, LMV393MM/NOPB, and LMV393QDRQ1 from Texas Instruments operate within 2.7V ~ 5.5V supply range, limiting their use to applications not requiring the full 2V ~ 36V capability of the original part. These alternatives offer higher output current capability (84mA vs. 16mA) and lower quiescent current (250µA vs. 1mA). LMV393QDRQ1 includes automotive-grade qualification (AEC-Q100) and extends operating temperature to -40°C ~ 125°C.

Avoid: LMV393M and LMV393MX carry obsolete or last-time-buy status and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can AS393P-E1 replace AS393PT-G1 directly? A: Yes. AS393P-E1 is a direct pin-compatible replacement. Both use 8-DIP through-hole packaging with identical electrical specifications, supply voltage range, and operating temperature limits. The primary difference is product status: AS393P-E1 is active with high inventory availability.

Q: What is the key difference between through-hole and surface-mount substitutes? A: Through-hole substitutes (AS393P-E1) require no PCB redesign and mount vertically through drilled holes. Surface-mount substitutes (BA2903, LMV393 series) require PCB layout modifications and specialized soldering equipment but offer smaller footprints and improved thermal characteristics.

Q: Why do some substitutes have restricted supply voltage ranges? A: LMV393 series parts from Texas Instruments are optimized for low-voltage applications (2.7V ~ 5.5V) and cannot operate at the full 2V ~ 36V range of the original AS393PT-G1. These parts are suitable only for applications operating within their specified voltage limits.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental compliance status of the original AS393PT-G1.

Q: Which substitute offers the best thermal performance? A: BA2903FV-E2 and LMV393QDRQ1 both extend operating temperature to -40°C ~ 125°C, compared to the original part's -40°C ~ 85°C range. LMV393QDRQ1 additionally includes automotive-grade qualification (AEC-Q100).

Q: Can I use LMV393 parts in applications requiring the full 2V ~ 36V supply range? A: No. LMV393 series parts operate only within 2.7V ~ 5.5V. For applications requiring the full supply voltage range of AS393PT-G1, use AS393P-E1, BA2903FV-E2, or BA2903SFV-E2.

Q: What is the inventory status of recommended substitutes? A: AS393P-E1 has 40,200 units in stock. BA2903FV-E2 has 6,050 units. BA2903SFV-E2 has 6,280 units. LMV393IDGKR has 1,734 units. LMV393IPWR has 65,220 units. LMV393MM/NOPB has 4,415 units. LMV393QDRQ1 has 17,600 units. All are new original stock.

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