LM319M Equivalent & Substitute Parts

Part Overview

The LM319M is a general-purpose dual comparator IC manufactured by onsemi in 14-SOIC surface-mount packaging. This device features DTL, Open-Collector, Open-Emitter, RTL, and TTL output configurations with a supply voltage range of 5V to 30V (single) or ±2.5V to ±15V (dual). The LM319M is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

LM319M

onsemiIn Stock: 1931LM319M Datasheet

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LM119H

Texas InstrumentsIn Stock: 1543LM119H Datasheet

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LM219DT

STMicroelectronicsIn Stock: 21021LM219DT Datasheet

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LM319AM/NOPB

Texas InstrumentsIn Stock: 3105LM319AM/NOPB Datasheet

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LM319DT

STMicroelectronicsIn Stock: 6030LM319DT Datasheet

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LM319M/NOPB

Texas InstrumentsIn Stock: 2050LM319M/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM319M are determined by the following critical parameters:

• Dual comparator configuration (2 elements)
• Output type compatibility (DTL, Open-Collector, Open-Emitter, RTL, TTL)
• Supply voltage range (5V ~ 30V single, ±2.5V ~ 15V dual)
• Input offset voltage (8mV maximum @ ±15V)
• Input bias current (1µA maximum @ ±15V)
• Output current capability (25mA typical)
• Quiescent current (12.5mA maximum)
• Package compatibility (14-SOIC surface mount)
• Operating temperature range (0°C ~ 70°C)

Substitutes are grouped into two categories based on packaging and mounting type:

Category 1: Surface-Mount 14-SOIC Equivalents — Direct pin-compatible replacements with identical or superior electrical specifications and surface-mount packaging.

Category 2: Through-Hole Alternative — Functionally equivalent but requires different PCB layout due to TO-100-10 metal can packaging.

Parameter Comparison

Engineering Selection Recommendations

For Direct Surface-Mount Replacement (14-SOIC):

LM319M/NOPB (Texas Instruments) provides the closest electrical match with active product status. This part maintains identical supply voltage range, input offset voltage, input bias current, and quiescent current specifications while offering extended availability through active manufacturing.

LM319AM/NOPB (Texas Instruments) offers superior input offset voltage performance (1mV vs. 8mV) and reduced input bias current (0.5µA vs. 1µA) within the same 14-SOIC package and operating temperature range. Extended supply voltage range (±2.5V to ±18V) provides additional design flexibility.

LM319DT (STMicroelectronics) matches the LM319M electrical specifications exactly and maintains 14-SOIC surface-mount packaging with active product status. Output type configuration excludes DTL and RTL modes.

LM219DT (STMicroelectronics) provides extended operating temperature range (-40°C to 105°C) with reduced input offset voltage (4mV) and input bias current (0.5µA). Output type configuration excludes DTL and RTL modes.

For Through-Hole Alternative:

LM119H (Texas Instruments) offers extended operating temperature range (-55°C to 125°C) and superior electrical specifications (4mV input offset, 0.5µA input bias current) in TO-100-10 metal can packaging. This option requires PCB layout modification but provides the widest temperature operating range among available substitutes.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification consistent with the original LM319M.

Frequently Asked Questions (FAQ)

Q: Can LM319M/NOPB directly replace the obsolete LM319M?

A: Yes. LM319M/NOPB is a direct pin-compatible replacement in 14-SOIC surface-mount packaging with identical electrical specifications and active product status from Texas Instruments.

Q: What is the difference between LM319AM/NOPB and LM319M/NOPB?

A: LM319AM/NOPB provides superior input offset voltage (1mV vs. 8mV) and lower input bias current (0.5µA vs. 1µA). Both use 14-SOIC packaging and operate within 0°C to 70°C temperature range. LM319AM/NOPB supports extended supply voltage (±2.5V to ±18V vs. ±2.5V to ±15V).

Q: Are STMicroelectronics LM319DT and LM219DT compatible with the LM319M?

A: LM319DT provides electrical equivalence with identical specifications. LM219DT offers extended operating temperature (-40°C to 105°C) and improved input offset voltage (4mV). Both omit DTL and RTL output modes. Pin compatibility and 14-SOIC packaging remain unchanged.

Q: Why would I select LM119H over surface-mount alternatives?

A: LM119H is selected when through-hole mounting is required or when extended operating temperature range (-55°C to 125°C) is necessary. This part offers superior electrical specifications but requires different PCB layout due to TO-100-10 metal can packaging.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status consistent with the original LM319M.

Q: What output type differences exist between substitutes?

A: LM319M, LM319M/NOPB, LM319AM/NOPB, and LM119H support DTL, Open-Collector, Open-Emitter, RTL, and TTL outputs. LM319DT and LM219DT support Open-Collector, Open-Emitter, and TTL outputs only. Verify output type requirements before selection.

Q: Can I use LM219DT in applications requiring 0°C to 70°C operation?

A: Yes. LM219DT operates within -40°C to 105°C range, which encompasses the 0°C to 70°C requirement. The extended temperature capability does not restrict operation within narrower temperature bands.