MAX9018AEKA-T Equivalent & Substitute Parts

Part Overview

The MAX9018AEKA-T is a dual comparator with integrated voltage reference in SOT-23-8 surface mount packaging, manufactured by Analog Devices Inc./Maxim Integrated. This device features open-drain output configuration and operates across a 1.8V to 5.5V supply range. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain functional equivalence through matching electrical characteristics and package compatibility while meeting current product availability and compliance standards.

Key Parameters

Parameter	Value	Specification
Number of Elements	2	Dual comparator configuration
Output Type	Open-Drain	Electrical output configuration
Voltage - Supply, Single/Dual (±)	1.8V ~ 5.5V	Operating supply voltage range
Voltage - Input Offset (Max)	5mV @ 5V	Maximum input offset voltage
Current - Quiescent (Max)	2.8µA	Maximum quiescent current
Propagation Delay (Max)	31µs	Maximum propagation delay
Hysteresis	4mV	Built-in hysteresis
Operating Temperature	-40°C ~ 85°C	Temperature operating range
Package / Case	SOT-23-8	Surface mount package
Mounting Type	Surface Mount	PCB assembly method
RoHS Status	ROHS3 Compliant	Environmental compliance
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Moisture handling classification

Substitute Part Grouping Explanation

Substitution of the MAX9018AEKA-T is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Package type: SOT-23-8 or TSOT-23-8 (thin variant acceptable)
Number of elements: 2 (dual comparator)
Supply voltage range: Must encompass 1.8V ~ 5.5V minimum
Operating temperature: Must support -40°C ~ 85°C minimum
Surface mount configuration
RoHS3 compliance

Functional Equivalence Parameters:

Output configuration: Open-drain or CMOS/push-pull/rail-to-rail/TTL (functionally compatible)
Input offset voltage: 5mV or lower
Quiescent current: 2.8µA or lower
Propagation delay: 31µs or lower
Hysteresis: 4mV to 8.2mV range

The MAX9018AEKA+T serves as a parametric equivalent with identical electrical specifications and active product status. The LTC6702 series (CTS8, HTS8, ITS8 variants) provides functional substitution with enhanced performance characteristics including faster propagation delay (450ns), lower input offset voltage (4.6mV), and extended temperature range options, while maintaining package compatibility and compliance requirements.

Parameter Comparison

Parameter	MAX9018AEKA-T (Main)	MAX9018AEKA+T	LTC6702CTS8#TRMPBF	LTC6702CTS8#TRPBF	LTC6702HTS8#TRMPBF	LTC6702HTS8#TRPBF	LTC6702ITS8#TRMPBF	LTC6702ITS8#TRPBF
Manufacturer	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Number of Elements	2	2	2	2	2	2	2	2
Output Type	Open-Drain	Open-Drain	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL
Voltage - Supply (V)	1.8 ~ 5.5	1.8 ~ 5.5	1.7 ~ 5.5	1.7 ~ 5.5	1.7 ~ 5.5	1.7 ~ 5.5	1.7 ~ 5.5	1.7 ~ 5.5
Voltage - Input Offset (Max)	5mV @ 5V	5mV @ 5V	4.6mV @ 3V	4.6mV @ 3V	4.6mV @ 3V	4.6mV @ 3V	4.6mV @ 3V	4.6mV @ 3V
Current - Quiescent (Max)	2.8µA	2.8µA	32µA	32µA	32µA	32µA	32µA	32µA
Propagation Delay (Max)	31µs	31µs	450ns	450ns	450ns	450ns	450ns	450ns
Hysteresis	4mV	4mV	7.2mV	7.2mV	8.2mV	8.2mV	5mV	5mV
Operating Temperature (°C)	-40 ~ 85	-40 ~ 85	0 ~ 70	0 ~ 70	-40 ~ 125	-40 ~ 125	-40 ~ 85	-40 ~ 85
Package / Case	SOT-23-8	SOT-23-8	SOT-23-8 Thin, TSOT-23-8	SOT-23-8 Thin, TSOT-23-8	SOT-23-8 Thin, TSOT-23-8	SOT-23-8 Thin, TSOT-23-8	SOT-23-8 Thin, TSOT-23-8	SOT-23-8 Thin, TSOT-23-8
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MAX9018AEKA+T is the direct parametric equivalent with identical electrical specifications and active product status. This part maintains the open-drain output configuration and all performance characteristics of the obsolete MAX9018AEKA-T while providing current manufacturing availability and supply chain continuity.

LTC6702 Series (CTS8, HTS8, ITS8 variants) provides functional substitution with enhanced performance. These parts feature CMOS push-pull output with rail-to-rail capability, superior propagation delay (450ns versus 31µs), and lower input offset voltage (4.6mV versus 5mV). Selection within the LTC6702 series depends on temperature range requirements and packaging format:

LTC6702CTS8#TRMPBF / LTC6702CTS8#TRPBF: Operating temperature 0°C ~ 70°C. Suitable for commercial-grade applications with restricted temperature range.
LTC6702HTS8#TRMPBF / LTC6702HTS8#TRPBF: Operating temperature -40°C ~ 125°C. Extended temperature range accommodates industrial and automotive environments.
LTC6702ITS8#TRMPBF / LTC6702ITS8#TRPBF: Operating temperature -40°C ~ 85°C. Matches the original part's temperature specification.

All substitute parts maintain SOT-23-8 package compatibility, ROHS3 compliance, and MSL 1 classification. Packaging format selection (Tape & Reel versus Cut Tape & Digi-Reel) depends on procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can LTC6702 series parts directly replace MAX9018AEKA-T without circuit modifications?

A: LTC6702 parts are functionally compatible but feature different output configurations. The MAX9018AEKA-T uses open-drain output, while LTC6702 devices provide CMOS push-pull rail-to-rail output. Circuit designs relying on open-drain pull-up resistor networks may require output stage redesign. The MAX9018AEKA+T provides direct replacement without circuit changes.

Q: What is the difference between LTC6702CTS8, LTC6702HTS8, and LTC6702ITS8 variants?

A: These variants differ in operating temperature range and hysteresis specification. CTS8 operates 0°C ~ 70°C with 7.2mV hysteresis. HTS8 operates -40°C ~ 125°C with 8.2mV hysteresis. ITS8 operates -40°C ~ 85°C with 5mV hysteresis. Selection depends on application temperature requirements and hysteresis tolerance.

Q: What is the significance of the packaging suffix (TRMPBF versus TRPBF)?

A: TRMPBF indicates Cut Tape & Digi-Reel packaging format, while TRPBF indicates standard Tape & Reel format. Both provide identical electrical performance and package dimensions. Selection depends on procurement volume and assembly line compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts, including MAX9018AEKA+T and all LTC6702 variants, maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity classification, matching the original part's environmental certifications.

Q: What is the primary performance advantage of LTC6702 substitutes over MAX9018AEKA-T?

A: LTC6702 devices provide significantly faster propagation delay (450ns versus 31µs), lower input offset voltage (4.6mV versus 5mV), and extended temperature range options. These improvements benefit high-speed comparator applications and temperature-critical environments.

Q: Can MAX9018AEKA+T be used in all applications where MAX9018AEKA-T was specified?

A: Yes. MAX9018AEKA+T maintains identical electrical specifications, package configuration, and output type. The only difference is product status (active versus obsolete) and packaging format availability. This part provides direct functional equivalence for all design requirements.

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