MAX924ESE Equivalent & Substitute Parts

Part Overview

The MAX924ESE is a quad comparator with integrated voltage reference, manufactured by Analog Devices Inc./Maxim Integrated. This CMOS/TTL output comparator operates across a wide supply voltage range (2.5V ~ 11V single supply, ±1.25V ~ 5.5V dual supply) and is housed in a 16-SOIC surface mount package. The MAX924ESE is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

MAX924ESE

Analog Devices Inc./Maxim IntegratedIn Stock: 5467MAX924ESE Datasheet

Current PartRFQ

MAX924ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3310MAX924ESE+ Datasheet

DirectRFQ

LTC1443CS#PBF

Analog Devices Inc.In Stock: 1227LTC1443CS#PBF Datasheet

MFR RecommendedRFQ

LTC1443CS#TRPBF

Analog Devices Inc.In Stock: 837LTC1443CS#TRPBF Datasheet

MFR RecommendedRFQ

LTC1443IS#PBF

Analog Devices Inc.In Stock: 21631LTC1443IS#PBF Datasheet

MFR RecommendedRFQ

LTC1443IS#TRPBF

Analog Devices Inc.In Stock: 1957LTC1443IS#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX924ESE is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Number of elements: 4 comparators
• Output type: CMOS, TTL compatible
• Voltage supply range compatibility
• Input offset voltage specification
• Propagation delay performance
• Package type: 16-SOIC surface mount
• Operating temperature range coverage
• RoHS and compliance certifications

Substitution Categories:

Direct Equivalent (Identical Specifications): MAX924ESE+ is a direct equivalent with identical electrical specifications and packaging. The only difference is product status (Active vs. Obsolete) and packaging format (Tube).

Functional Equivalents (LTC1443 Series): The LTC1443CS#PBF, LTC1443CS#TRPBF, LTC1443IS#PBF, and LTC1443IS#TRPBF are functional substitutes manufactured by Analog Devices Inc. These parts maintain core comparator functionality with the following considerations:

• Voltage supply range: 2V ~ 11V (vs. 2.5V minimum for MAX924ESE)
• Operating temperature variants: 0°C ~ 70°C (commercial) or -40°C ~ 85°C (industrial)
• Output current specification differs (0.015mA @ 5V vs. 50mA typical)
• Packaging variants: Tube or Tape & Reel formats

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): MAX924ESE+ is the primary substitute, offering identical electrical specifications and operating temperature range (-40°C ~ 85°C). This part is currently in active production status with 3,300 units in stock. Selection of MAX924ESE+ eliminates any performance or compatibility concerns and maintains full specification alignment with the original MAX924ESE design.

For Extended Supply Voltage Range Applications: LTC1443IS#PBF and LTC1443IS#TRPBF support extended operating temperature range (-40°C ~ 85°C) matching the MAX924ESE. These parts accept lower minimum supply voltage (2V vs. 2.5V) and are available in high inventory quantities (21,579 and 1,900 units respectively). The LTC1443IS#TRPBF variant includes 50mV hysteresis specification not present in the MAX924ESE datasheet.

For Commercial Temperature Range Applications: LTC1443CS#PBF and LTC1443CS#TRPBF operate across 0°C ~ 70°C temperature range. These substitutes are suitable for applications not requiring extended low-temperature performance. Both variants maintain identical core comparator specifications and RoHS3 compliance.

Packaging Considerations: All substitute parts are available in 16-SOIC surface mount packages with identical physical dimensions (0.154", 3.90mm width). Tube packaging (standard format) is available for MAX924ESE+, LTC1443CS#PBF, and LTC1443IS#PBF. Tape & Reel (TR) format is available for LTC1443CS#TRPBF and LTC1443IS#TRPBF for high-volume production requirements.

Output Current Specification Difference: The LTC1443 series specifies typical output current of 0.015mA @ 5V, compared to 50mA for the MAX924ESE. Applications requiring high output current drive capability should retain MAX924ESE+ as the primary selection.

Frequently Asked Questions (FAQ)

Q: Can LTC1443 series parts directly replace MAX924ESE in all applications? A: LTC1443 parts are functionally equivalent for comparator operation with identical propagation delay (12µs), CMRR/PSRR (80dB), and input offset voltage (10mV @ 5V). However, output current specification differs significantly (0.015mA vs. 50mA). Applications requiring high output current drive should use MAX924ESE+ instead.

Q: What is the difference between LTC1443CS and LTC1443IS variants? A: The primary difference is operating temperature range. LTC1443CS operates 0°C ~ 70°C (commercial grade), while LTC1443IS operates -40°C ~ 85°C (industrial grade). Select LTC1443IS for applications requiring extended low-temperature performance matching the MAX924ESE specification.

Q: Are Tube and Tape & Reel packaging electrically equivalent? A: Yes. Tube and Tape & Reel formats contain identical die and electrical specifications. The difference is packaging format for handling and automated assembly. Tube format is standard for lower-volume requirements; Tape & Reel format is optimized for high-volume production lines.

Q: Does the LTC1443IS#TRPBF hysteresis specification affect substitution? A: The LTC1443IS#TRPBF includes 50mV hysteresis specification not documented for the MAX924ESE. This additional hysteresis may affect circuit behavior in applications with marginal input signal levels. Verify circuit performance if hysteresis is a critical design parameter.

Q: What is the minimum supply voltage difference between MAX924ESE and LTC1443? A: MAX924ESE minimum single supply is 2.5V; LTC1443 minimum is 2V. LTC1443 parts accept lower supply voltages and are suitable for applications operating below 2.5V single supply. Both maintain identical upper supply limit (11V).

Q: Are all substitute parts RoHS3 compliant? A: Yes. MAX924ESE+, LTC1443CS#PBF, LTC1443CS#TRPBF, LTC1443IS#PBF, and LTC1443IS#TRPBF are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: Which substitute part has the highest inventory availability? A: LTC1443IS#PBF has the highest inventory with 21,579 units in stock, followed by MAX924ESE+ with 3,300 units. LTC1443IS#TRPBF has 1,900 units, and LTC1443CS#PBF has 1,148 units available.