LM393PWG4 Equivalent & Substitute Parts

Part Overview

The LM393PWG4 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 classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	LM393PWG4
Manufacturer	Texas Instruments
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Number of Elements	2
Output Type	Open-Collector, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	2V ~ 36V, ±1V ~ 18V
Voltage - Input Offset (Max)	5mV @ 30V
Current - Input Bias (Max)	0.25µA @ 5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	2.5mA
Operating Temperature	0°C ~ 70°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM393PWG4 is determined by the following critical parameters:

Primary Compatibility Criteria:

Package type: 8-TSSOP surface-mount form factor
Number of comparator elements: 2
Output configuration: Open-Collector capability
Supply voltage range: Minimum 2V ~ 36V (single) or ±1V ~ ±18V (dual)
Input offset voltage: Maximum 5mV to 7mV
Input bias current: Maximum 0.25µA @ 5V
Output current capability: Minimum 16mA to 20mA
Quiescent current: Maximum 2.5mA
RoHS3 compliance required

Substitution Categories:

Direct Equivalents (Same Package, Identical Electrical Performance): LM393PW, LM393PT, LM293PT, LM2903PT, LM2903WYPT, LM2903YPT meet all primary criteria with 8-TSSOP packaging and equivalent electrical specifications.

Compatible Alternatives (Same Package, Minor Parameter Variations): LM393PWR (Rohm Semiconductor) and AS393GTR-E1 (Diodes Incorporated) maintain 8-TSSOP packaging with acceptable parameter deviations within engineering tolerance.

Package Variant (Different Form Factor): LM293P uses 8-DIP through-hole packaging instead of surface-mount, suitable only for designs permitting package substitution.

Cross-Manufacturer Options: UPC393GR-9LG-E2-A (Renesas Electronics Corporation) provides functional equivalence with extended temperature range and active product status.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Supply Voltage	Input Offset (Max)	Output Current (Typ)	Quiescent Current (Max)	Operating Temp	Product Status
LM393PWG4	Texas Instruments	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	5mV @ 30V	20mA	2.5mA	0°C ~ 70°C	Obsolete
LM393PW	Texas Instruments	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	5mV @ 30V	20mA	2.5mA	0°C ~ 70°C	Obsolete
LM393PWR	Rohm Semiconductor	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	7mV @ 5V	—	1mA	0°C ~ 70°C	Not For New Designs
LM393PT	STMicroelectronics	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	5mV @ 30V	18mA @ 5V	2.5mA	0°C ~ 70°C	Active
AS393GTR-E1	Diodes Incorporated	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	Active
LM293P	Texas Instruments	8-DIP	Through Hole	2V~36V, ±1V~18V	5mV @ 30V	20mA	2.5mA	-25°C ~ 85°C	Active
LM293PT	STMicroelectronics	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	5mV @ 30V	18mA @ 5V	2.5mA	-40°C ~ 105°C	Active
LM2903PT	STMicroelectronics	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM2903WYPT	STMicroelectronics	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
LM2903YPT	STMicroelectronics	8-TSSOP	Surface Mount	2V~36V, ±1V~18V	7mV @ 5V	16mA @ 5V	2.5mA	-40°C ~ 125°C	Active
UPC393GR-9LG-E2-A	Renesas Electronics	8-TSSOP	Surface Mount	2V~32V, ±1V~16V	5mV @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	Active

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Active Transition):

LM393PT (STMicroelectronics) and LM393PW (Texas Instruments) provide the closest electrical match to the LM393PWG4. Both maintain identical supply voltage ranges, input offset specifications, and output current ratings. LM393PT carries active product status, making it the preferred choice for new production runs. Both parts maintain ROHS3 compliance and MSL-1 moisture sensitivity rating.

For Extended Temperature Range Applications:

LM293PT, LM2903PT, LM2903WYPT, and LM2903YPT (all STMicroelectronics) extend operating temperature to -40°C ~ 105°C or -40°C ~ 125°C, accommodating industrial and automotive environments beyond the original 0°C ~ 70°C specification. LM2903WYPT and LM2903YPT carry AEC-Q100 automotive qualification.

For Highest Availability and Active Status:

LM2903PT and LM2903YPT offer the largest inventory (325,100 and 141,400 units respectively) with active product status and extended temperature performance. These parts maintain all critical electrical parameters within acceptable engineering tolerance.

For Cross-Manufacturer Sourcing:

AS393GTR-E1 (Diodes Incorporated) and UPC393GR-9LG-E2-A (Renesas Electronics Corporation) provide alternative supply chains with active product status. Both maintain 8-TSSOP packaging and equivalent electrical specifications. UPC393GR-9LG-E2-A offers extended temperature range (-40°C ~ 125°C) and higher inventory availability (875 units).

For Through-Hole PCB Designs:

LM293P (Texas Instruments) substitutes the LM393PWG4 in designs requiring through-hole mounting. This part maintains identical electrical specifications and active product status, with extended operating temperature (-25°C ~ 85°C). Package substitution requires PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can LM393PT directly replace LM393PWG4 without circuit modification?

A: Yes. LM393PT maintains identical supply voltage range (2V ~ 36V, ±1V ~ 18V), input offset voltage (5mV @ 30V), output current (18mA @ 5V, comparable to 20mA specification), and quiescent current (2.5mA). Both use 8-TSSOP surface-mount packaging. No circuit modification is required.

Q: What is the difference between LM2903PT and LM2903WYPT?

A: Both parts are manufactured by STMicroelectronics with identical electrical specifications and 8-TSSOP packaging. LM2903WYPT carries AEC-Q100 automotive qualification and is designated for automotive-grade applications. LM2903PT is the industrial-grade equivalent. Electrical performance is identical.

Q: Why does UPC393GR-9LG-E2-A have a lower supply voltage maximum (2V ~ 32V vs. 2V ~ 36V)?

A: UPC393GR-9LG-E2-A (Renesas) specifies 2V ~ 32V single supply, compared to the LM393PWG4 specification of 2V ~ 36V. This represents a 4V reduction at the upper limit. For applications operating above 32V, this part is not suitable. Verify circuit maximum supply voltage before selection.

Q: Is the 8-DIP package LM293P compatible with LM393PWG4 designs?

A: LM293P maintains identical electrical specifications but uses 8-DIP through-hole packaging instead of 8-TSSOP surface-mount. PCB redesign is required. This substitution is only viable for new board layouts or rework scenarios where through-hole mounting is acceptable.

Q: What is the significance of MSL-1 (Unlimited) moisture sensitivity?

A: MSL-1 indicates unlimited shelf life without moisture bake-out requirements. Both the LM393PWG4 and all recommended substitutes carry MSL-1 rating, eliminating moisture-related handling constraints during storage and assembly.

Q: Can LM393PWR (Rohm Semiconductor) replace LM393PWG4?

A: LM393PWR maintains 8-TSSOP packaging and equivalent supply voltage range. However, it specifies 7mV input offset (vs. 5mV) and 1mA quiescent current (vs. 2.5mA). The part carries "Not For New Designs" status. Use only for legacy system maintenance where no alternative exists.

Q: Which substitute offers the best long-term availability?

A: LM2903PT and LM2903YPT (STMicroelectronics) provide the highest inventory levels (325,100 and 141,400 units respectively) with active product status and extended temperature range (-40°C ~ 125°C). These parts are recommended for designs requiring long-term production support.

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