MAX934ESE Equivalent & Substitute Parts

Part Overview

The MAX934ESE is a 4-channel comparator with integrated voltage reference, manufactured by Analog Devices Inc./Maxim Integrated. This linear IC operates with CMOS and TTL output types and is housed in a 16-SOIC surface mount package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX934ESE
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Category	Linear - Comparator with Voltage Reference
Number of Elements	4
Output Type	CMOS, TTL
Voltage Supply (Single/Dual)	2.5V ~ 11V, ±1.25V ~ 5.5V
Voltage - Input Offset (Max)	10mV @ 5V
Current - Output (Typ)	0.015mA @ 5V
Current - Quiescent (Max)	8.5µA
CMRR, PSRR (Typ)	80dB CMRR, 80dB PSRR
Propagation Delay (Max)	12µs
Operating Temperature	-40°C ~ 85°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the MAX934ESE is determined by the following critical parameters:

Number of Elements: 4 channels
Output Type: CMOS, TTL compatibility
Voltage Supply Range: 2.5V ~ 11V (single), ±1.25V ~ 5.5V (dual)
Input Offset Voltage: 10mV @ 5V maximum
Quiescent Current: 8.5µA maximum
CMRR/PSRR: 80dB minimum
Propagation Delay: 12µs maximum
Operating Temperature: -40°C ~ 85°C
Package: 16-SOIC surface mount

Substitute parts are grouped into two categories:

Direct Equivalent (Same Packaging): MAX934ESE+ maintains identical electrical specifications and 16-SOIC packaging with active product status.

Manufacturer-Recommended Alternatives (LTC1443 Series): The LTC1443CS#PBF, LTC1443CS#TRPBF, LTC1443IS#PBF, and LTC1443IS#TRPBF variants provide functional equivalence with minor parameter variations. These parts differ in operating temperature range and packaging format (Tube vs. Tape & Reel) while maintaining core electrical performance.

Parameter Comparison

Parameter	MAX934ESE	MAX934ESE+	LTC1443CS#PBF	LTC1443CS#TRPBF	LTC1443IS#PBF	LTC1443IS#TRPBF
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Number of Elements	4	4	4	4	4	4
Output Type	CMOS, TTL	CMOS, TTL	CMOS, TTL	CMOS, TTL	CMOS, TTL	CMOS, TTL
Voltage Supply (Single/Dual)	2.5V ~ 11V, ±1.25V ~ 5.5V	2.5V ~ 11V, ±1.25V ~ 5.5V	2V ~ 11V, ±1V ~ 5.5V	2V ~ 11V, ±1V ~ 5.5V	2V ~ 11V, ±1V ~ 5.5V	2V ~ 11V, ±1V ~ 5.5V
Voltage - Input Offset (Max)	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V	10mV @ 5V
Current - Output (Typ)	0.015mA @ 5V	0.015mA @ 5V	0.015mA @ 5V	0.015mA @ 5V	0.015mA @ 5V	0.015mA @ 5V
Current - Quiescent (Max)	8.5µA	8.5µA	8.5µA	8.5µA	8.5µA	8.5µA
CMRR, PSRR (Typ)	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR	80dB CMRR, 80dB PSRR
Propagation Delay (Max)	12µs	12µs	12µs	12µs	12µs	12µs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Bulk	Tube	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement: MAX934ESE+ is the primary substitute, offering identical electrical specifications and operating temperature range (-40°C ~ 85°C) with active product status. This part maintains full compatibility with existing designs and is available in Tube packaging.

For Extended Temperature Applications: LTC1443IS#PBF and LTC1443IS#TRPBF maintain the -40°C ~ 85°C operating range required for industrial and military applications. These parts are available in both Tube and Tape & Reel formats.

For Commercial Temperature Range Applications: LTC1443CS#PBF and LTC1443CS#TRPBF operate within 0°C ~ 70°C and are suitable for commercial-grade designs. These variants are available in Tube and Tape & Reel packaging.

For High-Volume Production: Tape & Reel packaging (LTC1443CS#TRPBF, LTC1443IS#TRPBF) is recommended for automated assembly processes.

All substitute parts maintain ROHS3 compliance and are manufactured by Analog Devices Inc., ensuring consistent quality and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can MAX934ESE be directly replaced with MAX934ESE+? A: Yes. MAX934ESE+ provides direct electrical and functional equivalence with identical specifications and operating temperature range. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube vs. Bulk).

Q: What is the difference between LTC1443CS and LTC1443IS variants? A: The primary difference is operating temperature range. LTC1443IS operates from -40°C ~ 85°C (industrial grade), while LTC1443CS operates from 0°C ~ 70°C (commercial grade). All other electrical parameters remain identical.

Q: Are Tube and Tape & Reel packaging electrically equivalent? A: Yes. Tube (PBF) and Tape & Reel (TRPBF) packaging formats contain identical die and electrical performance. The difference is in delivery format for manufacturing processes. Tape & Reel is optimized for automated assembly, while Tube packaging is suitable for manual or lower-volume applications.

Q: What is the significance of the voltage supply range difference between MAX934ESE and LTC1443 series? A: MAX934ESE supports 2.5V ~ 11V (single) and ±1.25V ~ 5.5V (dual), while LTC1443 supports 2V ~ 11V (single) and ±1V ~ 5.5V (dual). The LTC1443 series has a slightly lower minimum supply voltage specification. Both ranges are compatible with standard 5V and ±5V supply systems.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (MAX934ESE+, LTC1443CS#PBF, LTC1443CS#TRPBF, LTC1443IS#PBF, LTC1443IS#TRPBF) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Which substitute part has the highest inventory availability? A: LTC1443IS#PBF has the highest inventory with 21,579 pieces in stock, followed by MAX934ESE+ with 2,200 pieces.

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