LM393P-P2 Equivalent & Substitute Parts

Part Overview

The LM393P-P2 is a dual general-purpose comparator manufactured by Texas Instruments, featuring open-collector, rail-to-rail output configuration in an 8-PDIP through-hole package. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. The LM393P-P2 operates across a wide supply voltage range and is suitable for precision voltage comparison applications requiring low input offset voltage and minimal input bias current.

Substiute Parts

LM393P-P2

Texas InstrumentsIn Stock: 1099LM393P-P2 Datasheet

Current PartRFQ

LM393P

Texas InstrumentsIn Stock: 161918LM393P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM393P-P2 is determined by the following critical parameters:

Functional Equivalence Criteria:

• Dual comparator configuration (2 elements)
• Open-collector, rail-to-rail output topology
• 8-PDIP through-hole package format
• General-purpose comparator classification

Electrical Compatibility Criteria:

• Supply voltage range must encompass or exceed the original specification (2V ~ 30V single, ±1V ~ 15V dual)
• Input offset voltage maximum of 5mV @ 30V
• Input bias current maximum of 0.25µA @ 5V
• Operating temperature range 0°C ~ 70°C
• RoHS3 compliance

The LM393P represents the active production equivalent of the LM393P-P2. Both devices share identical functional specifications, package geometry, and electrical performance characteristics within the specified operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM393P is the direct active equivalent for the obsolete LM393P-P2. Selection of the LM393P is supported by the following engineering factors:

Compliance and Certification:

• Both devices maintain ROHS3 compliance, ensuring regulatory alignment for current manufacturing standards
• LM393P carries active product status with established supply chain availability

Electrical Performance:

• The LM393P demonstrates enhanced electrical specifications across multiple parameters: supply voltage range extended to 2V ~ 36V (single) and ±1V ~ 18V (dual), output current increased to 20mA typical, and quiescent current maximum of 2.5mA
• These enhancements provide superior performance margins without compromising the original design intent
• Core specifications (input offset voltage, input bias current, operating temperature) remain identical

Package and Mounting Compatibility:

• Identical 8-DIP through-hole package geometry ensures direct mechanical and electrical compatibility on existing printed circuit boards
• No layout modifications or rework procedures are required

Procurement Considerations:

• LM393P inventory availability significantly exceeds that of the obsolete LM393P-P2, supporting production continuity and cost optimization

Frequently Asked Questions (FAQ)

Q: Can the LM393P directly replace the LM393P-P2 without circuit modifications?

A: Yes. The LM393P is electrically and mechanically compatible with the LM393P-P2. Both devices feature identical package geometry (8-DIP), pin configuration, and core electrical specifications. Direct substitution on existing printed circuit boards is supported without design changes.

Q: What are the key differences between LM393P-P2 and LM393P?

A: The primary differences are product status and enhanced electrical specifications. The LM393P-P2 is obsolete; the LM393P is active production. The LM393P provides extended supply voltage range (2V ~ 36V single, ±1V ~ 18V dual versus 2V ~ 30V, ±1V ~ 15V), increased output current (20mA typical versus 6mA), and higher quiescent current maximum (2.5mA versus 1mA). Input offset voltage, input bias current, and operating temperature specifications remain identical.

Q: Are there packaging differences between these devices?

A: The LM393P-P2 is specified as prototype packaging; the LM393P is supplied in tube packaging. Both devices use the 8-PDIP (0.300", 7.62mm) through-hole package format. The packaging difference reflects manufacturing and distribution methods only; electrical and mechanical specifications are identical.

Q: What is the significance of the extended supply voltage range in the LM393P?

A: The LM393P supports supply voltages up to 36V (single) and ±18V (dual), compared to the LM393P-P2 maximum of 30V and ±15V. This extended range provides additional design flexibility for applications requiring higher supply voltages while maintaining full backward compatibility with designs operating within the original LM393P-P2 voltage specifications.

Q: Is the LM393P suitable for new designs?

A: Yes. The LM393P is an active product with established supply chain availability and current manufacturing support. It is appropriate for both replacement of obsolete LM393P-P2 devices and new design implementations.

Q: How do the output current specifications affect circuit design?

A: The LM393P provides 20mA typical output current compared to 6mA for the LM393P-P2. This increased output capability allows direct driving of higher-impedance loads or multiple logic inputs without additional buffering stages. Designs utilizing the LM393P-P2 at or near its 6mA output limit benefit from the enhanced current capability of the LM393P.

Q: Are both devices RoHS compliant?

A: Yes. Both the LM393P-P2 and LM393P are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.