LM319AM Equivalent & Substitute Parts

Part Overview

The LM319AM is a general-purpose dual comparator IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. The device features DTL, Open-Collector, Open-Emitter, RTL, and TTL output configurations with a supply voltage range of 5V to 36V (single) or ±2.5V to ±18V (dual). The LM319AM is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

LM319AM

Texas InstrumentsIn Stock: 3123LM319AM Datasheet

Current PartRFQ

LM319AM/NOPB

Texas InstrumentsIn Stock: 3105LM319AM/NOPB Datasheet

DirectRFQ

LM219DT

STMicroelectronicsIn Stock: 21021LM219DT Datasheet

MFR RecommendedRFQ

LM319DT

STMicroelectronicsIn Stock: 6030LM319DT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM319AM is determined by the following critical parameters:

• Package Compatibility: 14-SOIC surface mount form factor
• Functional Equivalence: Dual general-purpose comparator with 2 elements
• Output Configuration: Open-Collector, Open-Emitter, TTL output types
• Supply Voltage Range: Minimum 5V to 36V (single) or ±2.5V to ±18V (dual)
• Input Offset Voltage: Maximum 1mV to 8mV @ ±15V
• Input Bias Current: Maximum 0.5µA to 1µA @ ±15V
• Quiescent Current: Maximum 11.5mA to 12.5mA
• Operating Temperature: 0°C to 70°C or -40°C to 105°C
• Compliance: ROHS3 Compliant, MSL Level 1

Substitute parts must maintain electrical compatibility within these parameter ranges and support the same package footprint and mounting type.

Parameter Comparison

Engineering Selection Recommendations

LM319AM/NOPB is the direct equivalent substitute. This part maintains identical electrical specifications, package configuration, and operating temperature range as the main part. The primary distinction is product status: LM319AM/NOPB is active, whereas LM319AM is obsolete. This part is recommended as the primary replacement for new designs and ongoing procurement.

LM219DT (STMicroelectronics) is a functional substitute with the following considerations: supply voltage range is reduced to 5V ~ 30V (single) or ±2.5V ~ 15V (dual), input offset voltage increases to 4mV maximum, and operating temperature extends to -40°C ~ 105°C. This part is suitable for applications operating within the reduced voltage specifications.

LM319DT (STMicroelectronics) is a functional substitute with the following considerations: supply voltage range is reduced to 5V ~ 30V (single) or ±2.5V ~ 15V (dual), input offset voltage increases to 8mV maximum, and input bias current increases to 1µA maximum. Operating temperature matches the main part at 0°C ~ 70°C. This part is suitable for applications with relaxed input offset and bias current tolerances.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and 14-SOIC surface mount packaging.

Frequently Asked Questions (FAQ)

Q: Can LM319AM/NOPB be used as a direct replacement for LM319AM?

A: Yes. LM319AM/NOPB is electrically and mechanically identical to LM319AM. The only difference is product status: LM319AM/NOPB is active while LM319AM is obsolete. This is the recommended direct substitute.

Q: What are the key differences between LM319AM and the STMicroelectronics alternatives?

A: The primary differences are reduced maximum supply voltage (30V vs. 36V single supply), increased input offset voltage specifications (4mV to 8mV vs. 1mV), and in the case of LM319DT, increased input bias current (1µA vs. 0.5µA). Both STMicroelectronics parts support extended operating temperature ranges.

Q: Are all substitute parts in the same 14-SOIC package?

A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring identical PCB footprint compatibility.

Q: Which substitute should be selected for applications requiring extended temperature operation?

A: LM219DT supports -40°C to 105°C operating temperature, compared to 0°C to 70°C for the main part and LM319DT. Selection depends on application temperature requirements and acceptable input offset voltage specifications.

Q: Are all parts RoHS compliant?

A: Yes. LM319AM, LM319AM/NOPB, LM219DT, and LM319DT are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.