LM393APWRE4 Equivalent & Substitute Parts

Part Overview

The LM393APWRE4 is a dual general-purpose comparator IC manufactured by Texas Instruments, housed in an 8-TSSOP surface-mount package. This device features open-collector, rail-to-rail output configuration with a supply voltage range of 2V to 36V (single) or ±1V to ±18V (dual). The part is currently listed as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.

Key Parameters

Parameter	Value
Number of Elements	2
Output Type	Open-Collector, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	2mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	2.5mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM393APWRE4 is determined by the following critical parameters:

Dual comparator configuration (2 elements)
Open-collector output topology
Supply voltage range compatibility: 2V ~ 36V single / ±1V ~ 18V dual
Input bias current: 0.25µA @ 5V maximum
8-TSSOP package footprint (0.173", 4.40mm width)
Surface-mount technology
ROHS3 compliance

Substitute parts must maintain compatibility across these parameters. Variations in input offset voltage, output current capability, quiescent current, and operating temperature range are permissible provided the core electrical and mechanical specifications align with the original design requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Number of Elements	Output Type	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Package
LM393APWRE4	Texas Instruments	Obsolete	2	Open-Collector, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	2mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	8-TSSOP
LM393APWR	Texas Instruments	Active	2	Open-Collector, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	2mV @ 30V	0.25µA @ 5V	20mA	2.5mA	0°C ~ 70°C	8-TSSOP
AS393GTR-E1	Diodes Incorporated	Active	2	Open-Collector	2V ~ 36V, ±1V ~ 18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	8-TSSOP
LM2903PT	STMicroelectronics	Active	2	Open-Collector, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	8-TSSOP
LM2903WYPT	STMicroelectronics	Active	2	Open-Collector, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	8-TSSOP
LM2903YPT	STMicroelectronics	Active	2	Open-Collector, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	8-TSSOP
LM293PT	STMicroelectronics	Active	2	Open-Collector, Open-Drain, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	18mA @ 5V	2.5mA	-40°C ~ 105°C	8-TSSOP
LM393PT	STMicroelectronics	Active	2	Open-Collector, Rail-to-Rail	2V ~ 36V, ±1V ~ 18V	5mV @ 30V	0.25µA @ 5V	18mA @ 5V	2.5mA	0°C ~ 70°C	8-TSSOP
UPC393GR-9LG-E2-A	Renesas Electronics Corporation	Active	2	Open-Collector	2V ~ 32V, ±1V ~ 16V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	8-TSSOP

Engineering Selection Recommendations

Primary Equivalent (Direct Replacement): LM393APWR from Texas Instruments is the active equivalent of the obsolete LM393APWRE4. This part maintains identical electrical specifications and operating temperature range, differing only in packaging format (Cut Tape & Digi-Reel versus the original reel configuration). This is the preferred substitution for designs requiring no circuit modification.

Secondary Equivalents (Compatible Substitutes): LM393PT (STMicroelectronics) and LM393APWR provide functional equivalence with identical operating temperature ranges (0°C ~ 70°C) and matching supply voltage specifications. These parts are suitable for applications where the original temperature range is sufficient.

Extended Temperature Range Alternatives: LM2903PT, LM2903WYPT, and LM2903YPT from STMicroelectronics extend the operating temperature range to -40°C ~ 125°C, accommodating industrial and automotive environments. LM2903WYPT and LM2903YPT carry AEC-Q100 automotive qualification. These parts exhibit slightly higher input offset voltage (7mV @ 5V versus 2mV @ 30V) and reduced output current (16mA @ 5V versus 20mA), requiring circuit validation for current-limited applications.

Alternative Manufacturers: AS393GTR-E1 (Diodes Incorporated) and UPC393GR-9LG-E2-A (Renesas Electronics Corporation) provide dual-comparator functionality with extended temperature ranges (-40°C ~ 85°C and -40°C ~ 125°C respectively). UPC393GR-9LG-E2-A operates at a reduced maximum supply voltage (2V ~ 32V single / ±1V ~ 16V dual) compared to the original specification.

All substitute parts maintain ROHS3 compliance and 8-TSSOP package compatibility, enabling direct PCB footprint replacement.

Frequently Asked Questions (FAQ)

Q: Can LM393APWR be used as a direct replacement for LM393APWRE4? A: Yes. LM393APWR is the active production equivalent with identical electrical and thermal specifications. The only difference is packaging format (Cut Tape & Digi-Reel). No circuit modifications are required.

Q: What is the difference between LM393PT and LM2903PT? A: Both are dual comparators in 8-TSSOP packages with identical supply voltage ranges. LM2903PT extends the operating temperature range to -40°C ~ 125°C (versus 0°C ~ 70°C for LM393PT) and exhibits slightly higher input offset voltage (7mV @ 5V versus 5mV @ 30V). LM2903PT is suitable for industrial and automotive applications requiring wider temperature operation.

Q: Are LM2903WYPT and LM2903YPT interchangeable? A: Yes. Both parts are electrically identical STMicroelectronics dual comparators with AEC-Q100 automotive qualification, -40°C ~ 125°C operating range, and 8-TSSOP packaging. They are functionally interchangeable.

Q: Does UPC393GR-9LG-E2-A have any supply voltage limitations? A: UPC393GR-9LG-E2-A operates at 2V ~ 32V (single) or ±1V ~ 16V (dual), which is narrower than the original LM393APWRE4 specification of 2V ~ 36V or ±1V ~ 18V. Circuit designs operating above 32V single supply or ±16V dual supply require alternative parts.

Q: Can I use AS393GTR-E1 in place of LM393APWRE4? A: AS393GTR-E1 is functionally compatible with matching supply voltage range and dual-comparator configuration. However, it specifies open-collector output without explicit rail-to-rail designation, and exhibits higher input offset voltage (5mV @ 5V versus 2mV @ 30V). Circuit validation is recommended for precision applications.

Q: What is the MSL (Moisture Sensitivity Level) difference between parts? A: LM393APWRE4, LM393APWR, LM2903PT, LM2903WYPT, LM2903YPT, and LM293PT all carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. AS393GTR-E1 carries MSL 3 (168 Hours), requiring controlled storage and handling procedures. UPC393GR-9LG-E2-A does not specify MSL in the provided data.

Q: Are all substitute parts available in the same 8-TSSOP package? A: Yes. All listed substitute parts are housed in 8-TSSOP (0.173", 4.40mm width) surface-mount packages, enabling direct PCB footprint compatibility without layout modifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message