MAX932ESA Equivalent & Substitute Parts

Part Overview

The MAX932ESA is a dual comparator with integrated voltage reference, manufactured by Analog Devices Inc./Maxim Integrated. This linear IC operates with CMOS/TTL output stages and is housed in an 8-SOIC surface mount package. The device is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The MAX932ESA provides a 50mV hysteresis window and operates across supply voltages from 2.5V to 11V (single supply) or ±1.25V to ±5.5V (dual supply), with a maximum propagation delay of 12µs.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Part Number	MAX932ESA
Product Status	Obsolete
Package Type	8-SOIC (0.154", 3.90mm Width)
Number of Elements	2
Output Type	CMOS, TTL
Supply Voltage (Single/Dual)	2.5V ~ 11V, ±1.25V ~ 5.5V
Input Offset Voltage (Max)	10mV @ 5V
Quiescent Current (Max)	6µA
CMRR / PSRR (Typ)	80dB CMRR, 80dB PSRR
Propagation Delay (Max)	12µs
Hysteresis	50mV
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX932ESA is determined by the following critical parameters:

Electrical Compatibility Requirements:

Dual comparator configuration (2 elements)
CMOS/TTL output stage capability
Supply voltage range: 2.5V ~ 11V (single) or ±1.25V ~ ±5.5V (dual)
Input offset voltage: 10mV @ 5V maximum
Propagation delay: 12µs maximum
Hysteresis: 50mV
CMRR/PSRR: 80dB minimum

Mechanical Compatibility Requirements:

8-SOIC package (0.154", 3.90mm Width)
Surface mount mounting type
MSL 1 rating

Compliance Requirements:

ROHS3 compliant
REACH unaffected status

Substitute parts are grouped into two categories:

Category 1: Direct Equivalents (Identical Output Stage)

MAX932ESA+ (Active product status, tube packaging)
Maintains CMOS/TTL output configuration
Identical electrical specifications
Recommended for direct replacement in active designs

Category 2: Functional Equivalents (Alternative Output Stage)

LTC1842IS8#PBF, LTC1842IS8#TRPBF, LTC1842CS8#PBF, LTC1842CS8#TRPBF (Open-Drain output)
LTC1442CS8#PBF, LTC1442CS8#TRPBF, LTC1442IS8#PBF (CMOS/TTL output with extended current capability)
Meet core electrical specifications with output stage variations
Require circuit design verification for output stage compatibility

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Type	Supply Voltage	Quiescent Current (Max)	Propagation Delay (Max)	Operating Temp	Packaging
MAX932ESA	Analog Devices/Maxim	Obsolete	CMOS, TTL	2.5V ~ 11V, ±1.25V ~ ±5.5V	6µA	12µs	-40°C ~ 85°C	8-SOIC Tube
MAX932ESA+	Analog Devices/Maxim	Active	CMOS, TTL	2.5V ~ 11V, ±1.25V ~ ±5.5V	6µA	12µs	-40°C ~ 85°C	8-SOIC Tube
LTC1842IS8#PBF	Analog Devices	Active	Open-Drain	2.5V ~ 11V, ±1.25V ~ ±5.5V	5.7µA	12µs	-40°C ~ 85°C	8-SO Tube
LTC1842IS8#TRPBF	Analog Devices	Active	Open-Drain	2.5V ~ 11V, ±1.25V ~ ±5.5V	5.7µA	12µs	-40°C ~ 85°C	8-SO Tape & Reel
LTC1842CS8#PBF	Analog Devices	Active	Open-Drain	2.5V ~ 11V, ±1.25V ~ ±5.5V	5.7µA	12µs	0°C ~ 70°C	8-SO Tube
LTC1842CS8#TRPBF	Analog Devices	Active	Open-Drain	2.5V ~ 11V, ±1.25V ~ ±5.5V	5.7µA	12µs	0°C ~ 70°C	8-SO Tape & Reel
LTC1442CS8#PBF	Analog Devices	Active	CMOS, TTL	2V ~ 11V, ±1V ~ ±5.5V	5.7µA	15µs	0°C ~ 70°C	8-SO Tube
LTC1442CS8#TRPBF	Analog Devices	Active	CMOS, TTL	2V ~ 11V, ±1V ~ ±5.5V	5.7µA	15µs	0°C ~ 70°C	8-SO Tape & Reel
LTC1442IS8#PBF	Analog Devices	Active	CMOS, TTL	2V ~ 11V, ±1V ~ ±5.5V	5.7µA	15µs	-40°C ~ 85°C	8-SO Tube

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select MAX932ESA+ when active product status and identical electrical specifications are required. This part maintains full compatibility with existing MAX932ESA designs and carries active product status from Analog Devices/Maxim Integrated. Both parts are ROHS3 compliant with MSL 1 rating.

For Open-Drain Output Applications: The LTC1842 series (LTC1842IS8#PBF, LTC1842IS8#TRPBF, LTC1842CS8#PBF, LTC1842CS8#TRPBF) provides functional equivalence with open-drain output stages. These parts maintain identical propagation delay (12µs) and hysteresis (50mV) specifications. Selection between industrial temperature range (LTC1842IS8) and commercial temperature range (LTC1842CS8) depends on application requirements. Tape & Reel packaging (#TRPBF) is available for high-volume production; tube packaging (#PBF) is available for lower volumes.

For CMOS/TTL Output with Extended Current Capability: The LTC1442 series (LTC1442CS8#PBF, LTC1442CS8#TRPBF, LTC1442IS8#PBF) offers CMOS/TTL output configuration with 40mA typical output current. These parts have slightly extended propagation delay (15µs maximum) and narrower supply voltage range (2V ~ 11V single, ±1V ~ ±5.5V dual). Selection between industrial temperature range (LTC1442IS8) and commercial temperature range (LTC1442CS8) depends on application requirements.

Temperature Range Considerations:

MAX932ESA and LTC1842IS8#PBF/LTC1442IS8#PBF support -40°C ~ 85°C
LTC1842CS8#PBF and LTC1442CS8#PBF support 0°C ~ 70°C
Verify application temperature requirements before selection

Packaging Format Selection:

Tube packaging (#PBF) for prototype and low-volume applications
Tape & Reel packaging (#TRPBF) for automated assembly and high-volume production

All substitute parts maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can MAX932ESA+ be used as a direct replacement for MAX932ESA? A: Yes. MAX932ESA+ is the active product equivalent with identical electrical specifications, output stage configuration (CMOS/TTL), and package type (8-SOIC). The primary difference is product status (active vs. obsolete) and packaging format (tube). No circuit modifications are required.

Q: What is the difference between LTC1842 and LTC1442 series? A: The LTC1842 series features open-drain output stages, while the LTC1442 series features CMOS/TTL output stages. Both maintain 50mV hysteresis and 80dB CMRR/PSRR. The LTC1442 series provides higher output current (40mA typical) but has slightly extended propagation delay (15µs vs. 12µs) and narrower supply voltage range. Select based on output stage requirements of your circuit.

Q: Are there temperature range differences between substitute parts? A: Yes. LTC1842IS8#PBF and LTC1442IS8#PBF support industrial temperature range (-40°C ~ 85°C), matching the MAX932ESA. LTC1842CS8#PBF and LTC1442CS8#PBF support commercial temperature range (0°C ~ 70°C). Verify your application's temperature requirements before selection.

Q: What packaging options are available? A: Tube packaging (#PBF) is standard for lower volumes and prototyping. Tape & Reel packaging (#TRPBF) is available for automated assembly and high-volume production. Both packaging formats contain identical die and electrical specifications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the MAX932ESA compliance profile.

Q: What is the propagation delay difference between MAX932ESA and LTC1442 series? A: MAX932ESA and LTC1842 series have 12µs maximum propagation delay. LTC1442 series has 15µs maximum propagation delay. For timing-critical applications, verify that the 3µs difference is acceptable for your circuit design.

Q: Can I use LTC1842 (open-drain) in place of MAX932ESA (CMOS/TTL)? A: Open-drain output stages require external pull-up resistors and have different output impedance characteristics. Circuit design verification is required. If your design relies on CMOS/TTL output characteristics, use MAX932ESA+, LTC1442CS8#PBF, or LTC1442IS8#PBF instead.

Q: What is the minimum supply voltage difference between MAX932ESA and LTC1442? A: MAX932ESA supports 2.5V minimum single supply; LTC1442 supports 2V minimum single supply. For dual supply, MAX932ESA supports ±1.25V minimum; LTC1442 supports ±1V minimum. Verify your application's supply voltage range before selection.

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