MAX919ESA-T Equivalent & Substitute Parts

Part Overview

The MAX919ESA-T is a general-purpose CMOS comparator manufactured by Analog Devices Inc./Maxim Integrated, featuring push-pull, rail-to-rail output in an 8-SOIC package. This part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. The MAX919ESA-T operates across a 1.8V to 5.5V supply range with low input offset voltage and minimal quiescent current, suitable for precision signal comparison applications.

Substiute Parts

MAX919ESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 705MAX919ESA-T Datasheet

Current PartRFQ

MAX919ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3235MAX919ESA+T Datasheet

Parametric EquivalentRFQ

TLV3491AID

Texas InstrumentsIn Stock: 2147TLV3491AID Datasheet

MFR RecommendedRFQ

TLV3491AIDR

Texas InstrumentsIn Stock: 17797TLV3491AIDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX919ESA-T is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Package type: 8-SOIC surface mount configuration
• Output type: CMOS, push-pull, rail-to-rail
• Supply voltage range: 1.8V ~ 5.5V minimum compatibility
• Number of elements: Single comparator
• Functional category: General-purpose comparator

Acceptable Variation Parameters:

• Input offset voltage: Maximum 15mV (original specification 5mV)
• Input bias current: Up to 10pA (original specification 0.001µA)
• Propagation delay: Up to 14.6µs (original specification 940µs)
• Operating temperature range: Extended to -40°C ~ 125°C acceptable
• CMRR/PSRR: Minimum 69dB PSRR, 74dB CMRR acceptable
• Quiescent current: Maximum 1.2µA (matching specification)

Substitute parts must maintain identical package footprint, mounting type, and output characteristics to ensure direct PCB compatibility without redesign.

Parameter Comparison

Engineering Selection Recommendations

MAX919ESA+T (Parametric Equivalent): This part is the direct parametric equivalent to the MAX919ESA-T, manufactured by the same supplier with identical electrical specifications and performance characteristics. The primary distinction is packaging format: MAX919ESA+T is supplied in Tape & Reel (TR) format versus the original tube packaging. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating. MAX919ESA+T is currently in active production status, providing superior long-term availability compared to the obsolete MAX919ESA-T. This part is recommended as the primary replacement for direct substitution in existing designs.

TLV3491AID and TLV3491AIDR (Manufacturer-Recommended Substitutes): Texas Instruments TLV3491 series comparators provide functional equivalence with acceptable parameter variations. Both variants maintain identical 8-SOIC package footprint, CMOS push-pull rail-to-rail output, and 1.8V to 5.5V supply compatibility. The TLV3491 series demonstrates improved propagation delay performance (14.6µs versus 940µs) and extended operating temperature range (-40°C to 125°C). Input offset voltage tolerance increases to 15mV maximum, and input bias current improves to 10pA. Both TLV3491 variants are in active production with robust inventory availability. TLV3491AIDR offers Tape & Reel packaging for high-volume applications, while TLV3491AID provides tube packaging. Both maintain ROHS3 compliance with MSL-2 moisture sensitivity rating (1-year floor life). These parts are suitable for applications where the specified parameter variations fall within design margins.

Frequently Asked Questions (FAQ)

Q: Can MAX919ESA+T be used as a direct replacement for MAX919ESA-T without PCB modification?

A: Yes. MAX919ESA+T is a parametric equivalent with identical electrical specifications, package footprint, and pin configuration. The only difference is packaging format (Tape & Reel versus tube). No PCB redesign is required.

Q: What are the key differences between MAX919ESA-T and TLV3491 series comparators?

A: Both maintain identical 8-SOIC package, CMOS push-pull rail-to-rail output, and 1.8V to 5.5V supply range. TLV3491 series offers faster propagation delay (14.6µs versus 940µs), extended temperature range (-40°C to 125°C), and improved input bias current (10pA). Input offset voltage tolerance increases from 5mV to 15mV maximum. CMRR and PSRR specifications differ slightly between manufacturers.

Q: Are TLV3491AID and TLV3491AIDR electrically identical?

A: Yes. Both parts are electrically identical Texas Instruments TLV3491 comparators. The difference is packaging: TLV3491AID is supplied in tube format, while TLV3491AIDR is supplied in Tape & Reel format for automated assembly.

Q: What is the moisture sensitivity difference between MAX919ESA-T and TLV3491 series?

A: MAX919ESA-T and MAX919ESA+T have MSL-1 rating (unlimited floor life). TLV3491 series has MSL-2 rating (1-year floor life). MSL-2 components require controlled storage conditions and have a 1-year maximum floor life after package opening.

Q: Can TLV3491 series be used in applications requiring the original 4mV hysteresis specification?

A: TLV3491 series hysteresis specification is not provided in available documentation. Applications requiring confirmed 4mV hysteresis should verify TLV3491 hysteresis performance against design requirements before implementation.

Q: Is the faster propagation delay of TLV3491 (14.6µs) compatible with MAX919ESA-T designs?

A: Faster propagation delay is generally compatible with designs specified for 940µs maximum delay. However, applications with timing-critical signal paths should verify that improved speed does not introduce unintended behavior in the system.

Q: What is the inventory status of these substitute parts?

A: MAX919ESA+T has 3,200 pieces in stock. TLV3491AID has 2,084 pieces in stock. TLV3491AIDR has 17,700 pieces in stock. All parts are listed as active production items.