MAX974EPE Equivalent & Substitute Parts

Part Overview

The MAX974EPE is a 4-channel comparator with integrated voltage reference manufactured by Analog Devices Inc./Maxim Integrated. This device features open-drain output configuration and operates across a wide supply voltage range of 2.5V to 11V (single supply) or ±1.25V to ±5.5V (dual supply). The MAX974EPE is classified as obsolete, making identification of functionally equivalent active alternatives essential for new designs and production continuity.

Substiute Parts

MAX974EPE

Analog Devices Inc./Maxim IntegratedIn Stock: 1211MAX974EPE Datasheet

Current PartRFQ

LTC1443CN#PBF

Analog Devices Inc.In Stock: 3559LTC1443CN#PBF Datasheet

MFR RecommendedRFQ

LTC1443IN#PBF

Analog Devices Inc.In Stock: 838LTC1443IN#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX974EPE is determined by the following critical parameters that must remain compatible:

• Number of Elements: 4 channels required
• Package Type: 16-DIP (0.300", 7.62mm) form factor with through-hole mounting
• Voltage - Supply Range: Single supply 2V ~ 11V or dual supply ±1V ~ ±5.5V (substitute range must encompass or exceed original specification)
• Voltage - Input Offset (Max): 10mV @ 5V maximum
• Current - Quiescent (Max): 8.5µA maximum
• CMRR, PSRR (Typ): 80dB minimum for both parameters
• RoHS Compliance: ROHS3 Compliant status required

The LTC1443CN#PBF and LTC1443IN#PBF meet these substitution criteria. Both devices are manufactured by Analog Devices Inc., feature 4 comparators with voltage reference in 16-PDIP packaging, and maintain electrical parameter compatibility. The primary difference between these substitutes and the original MAX974EPE is the output type configuration (CMOS/TTL versus open-drain) and operating temperature range variation.

Parameter Comparison

Engineering Selection Recommendations

Both LTC1443CN#PBF and LTC1443IN#PBF are active, production-supported alternatives to the obsolete MAX974EPE. Selection between these two substitutes is determined by operating temperature requirements:

LTC1443IN#PBF is the preferred substitute when the application requires the full industrial temperature range of -40°C to 85°C, matching the original MAX974EPE specification. This device maintains identical quiescent current, input offset voltage, and common-mode rejection specifications.

LTC1443CN#PBF is suitable for commercial temperature range applications (0°C to 70°C) and offers higher inventory availability. This variant is appropriate when the design does not require extended low-temperature operation.

Both substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The transition from open-drain to CMOS/TTL output configuration requires circuit-level evaluation to ensure pull-up resistor networks and load impedance remain compatible with the new output stage characteristics.

Frequently Asked Questions (FAQ)

Q: Can LTC1443CN#PBF and LTC1443IN#PBF be used interchangeably with MAX974EPE?

A: Both LTC1443 variants are functionally equivalent in terms of comparator channel count, package form factor, and core electrical parameters (input offset voltage, quiescent current, CMRR/PSRR). The primary consideration is operating temperature range. LTC1443IN#PBF covers the full -40°C to 85°C range of the original part, while LTC1443CN#PBF is limited to 0°C to 70°C. Output type differs (CMOS/TTL versus open-drain), requiring circuit verification.

Q: What is the difference between LTC1443CN#PBF and LTC1443IN#PBF?

A: These devices are identical except for operating temperature specification. LTC1443IN#PBF operates from -40°C to 85°C (industrial grade), while LTC1443CN#PBF operates from 0°C to 70°C (commercial grade). Both are packaged in 16-PDIP and share all other electrical characteristics.

Q: Are the LTC1443 variants pin-compatible with MAX974EPE?

A: Yes. All three devices use 16-DIP (0.300", 7.62mm) through-hole packaging with identical pin assignments for the 4-channel comparator with voltage reference configuration.

Q: What compliance certifications apply to these substitutes?

A: Both LTC1443CN#PBF and LTC1443IN#PBF are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). REACH status is unaffected. ECCN classification is EAR99 for all variants.

Q: Why is the MAX974EPE obsolete?

A: The MAX974EPE has been discontinued by the manufacturer. The LTC1443 series represents the active production alternative from Analog Devices Inc. for new designs and ongoing production requirements.