LM319N Equivalent & Substitute Parts

Part Overview

The LM319N is a dual general-purpose comparator manufactured by onsemi, designed for applications requiring DTL, Open-Collector, Open-Emitter, RTL, and TTL output configurations. The device operates across a wide supply voltage range of 5V to 30V (single supply) or ±2.5V to ±15V (dual supply), making it suitable for diverse analog signal comparison tasks.

The LM319N is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance of systems utilizing this comparator.

Substiute Parts

LM319N

onsemiIn Stock: 10222LM319N Datasheet

Current PartRFQ

LM319N/NOPB

Texas InstrumentsIn Stock: 5460LM319N/NOPB Datasheet

DirectRFQ

LM119J

Texas InstrumentsIn Stock: 2204LM119J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM319N is determined by the following critical parameters:

• Functional equivalence: Dual general-purpose comparator with identical output type configuration (DTL, Open-Collector, Open-Emitter, RTL, TTL)
• Package compatibility: 14-DIP through-hole mounting with 0.300" (7.62mm) pitch
• Electrical performance: Supply voltage range, input offset voltage, input bias current, output current capability, and quiescent current
• Operating temperature range: Minimum operating temperature of 0°C or lower
• Compliance certifications: RoHS3 compliance and REACH unaffected status

Two substitute categories are identified:

Direct Substitute (Pin-Compatible, Functional Equivalent): LM319N/NOPB (Texas Instruments) — Identical base product number (LM319), same package type (14-PDIP), compatible electrical specifications, and active product status.

Similar Substitute (Enhanced Performance, Different Base Product): LM119J (Texas Instruments) — Different base product number (LM119) with improved electrical characteristics (lower input offset voltage and input bias current), extended operating temperature range, and active product status. Package type differs (14-CDIP vs. 14-MDIP) but maintains 14-DIP form factor compatibility.

Parameter Comparison

Engineering Selection Recommendations

LM319N/NOPB (Texas Instruments) is the primary direct substitute. It maintains identical electrical specifications, the same base product number, and active product status. This part is recommended for applications requiring direct replacement with no design modifications. The extended supply voltage range (5V ~ 36V vs. 5V ~ 30V) and dual supply range (±2.5V ~ 18V vs. ±2.5V ~ 15V) provide additional operational flexibility.

LM119J (Texas Instruments) is a similar substitute offering enhanced performance characteristics. It features lower input offset voltage (4mV vs. 8mV) and reduced input bias current (0.5µA vs. 1µA), resulting in improved precision and lower power consumption. The extended operating temperature range (-55°C ~ 125°C vs. 0°C ~ 70°C) supports applications in harsh environments. The LM119J is suitable for designs where improved performance specifications are beneficial or where extended temperature operation is required. Note that the output type configuration excludes Open-Emitter output, which may affect compatibility in specific circuit topologies.

Both substitutes are ROHS3 compliant and REACH unaffected, ensuring regulatory compliance for new designs and production.

Frequently Asked Questions (FAQ)

Q: Can LM319N/NOPB be used as a direct replacement for LM319N?

A: Yes. LM319N/NOPB is a direct substitute with identical electrical specifications, package type (14-DIP), and functional configuration. No circuit modifications are required. The part is manufactured by Texas Instruments and maintains active product status.

Q: What are the key differences between LM319N/NOPB and LM119J?

A: Both are dual general-purpose comparators in 14-DIP packages. LM119J offers superior electrical performance (lower input offset voltage and input bias current) and an extended operating temperature range (-55°C ~ 125°C vs. 0°C ~ 70°C). However, LM119J does not include Open-Emitter output capability. LM319N/NOPB maintains identical specifications to the original LM319N.

Q: Is LM119J compatible with the LM319N pinout?

A: Yes. Both devices use the 14-DIP package with 0.300" (7.62mm) pitch and are pin-compatible. However, verify that the absence of Open-Emitter output does not affect your circuit design before substitution.

Q: What is the difference between 14-MDIP, 14-PDIP, and 14-CDIP packages?

A: All three are 14-pin DIP packages with identical 0.300" (7.62mm) pitch and through-hole mounting. The letter designation (M, P, C) indicates the manufacturing variant or supplier designation. They are mechanically and electrically interchangeable for PCB mounting purposes.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both LM319N/NOPB and LM119J are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: Can I use LM119J in applications requiring the full 0°C ~ 70°C operating range?

A: Yes. LM119J operates across -55°C ~ 125°C, which encompasses the 0°C ~ 70°C range. It is suitable for this application and provides additional temperature margin for reliability.