MAX9100ESA+ Equivalent & Substitute Parts

Part Overview

The MAX9100ESA+ is a general-purpose CMOS comparator with push-pull, rail-to-rail output configuration in 8-SOIC surface mount packaging. Manufactured by Analog Devices Inc./Maxim Integrated, this device operates across a 1V to 5.5V supply range and is classified as obsolete. Due to its obsolete status and limited inventory availability (764 pcs), identifying active equivalent and substitute parts is necessary for ongoing design support and production continuity.

Key Parameters

Parameter	MAX9100ESA+
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete
Package / Case	8-SOIC (0.154", 3.90mm Width)
Output Type	CMOS, Push-Pull, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	1V ~ 5.5V
Voltage - Input Offset (Max)	10mV @ 5.5V
Current - Input Bias (Max)	0.015µA @ 5.5V
Current - Quiescent (Max)	13µA
CMRR, PSRR (Typ)	68dB CMRR, 66dB PSRR
Propagation Delay (Max)	4.5µs
Hysteresis	±2mV
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the MAX9100ESA+ is determined by the following critical parameters:

Output Configuration: CMOS, Push-Pull, Rail-to-Rail output type
Supply Voltage Range: Minimum 1V to 5.5V compatibility
Input Offset Voltage: Maximum 10mV to 15mV @ 5.5V
Input Bias Current: Low leakage characteristics (pA to µA range)
Quiescent Current: Low power consumption profile
Package Compatibility: 8-SOIC form factor for direct PCB replacement, or alternative packages (SOT-23-5, SOT-23-6) for functional equivalence
Propagation Delay: Performance-critical timing specifications
Operating Temperature Range: -40°C to 85°C minimum
Compliance: ROHS3 compliance and RoHS certification status

Substitute parts are grouped into two categories: pin-compatible 8-SOIC replacements and functional equivalents in alternative packages. All substitute parts maintain CMOS push-pull rail-to-rail output architecture and operate within overlapping supply voltage ranges.

Parameter Comparison

Parameter	MAX9100ESA+	TLV3491AID	TLV3491AIDR	TLV3491AIDBVR	TLV3701ID	TLV3701IDBVR	TLV3701IP	MCP6561UT-E/OT	TLV3501AIDBVR
Manufacturer	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Last Time Buy	Active	Last Time Buy	Active	Active
Package / Case	8-SOIC	8-SOIC	8-SOIC	SOT-23-5	8-SOIC	SOT-23-5	8-DIP	SOT-23-5	SOT-23-6
Output Type	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail, TTL
Voltage - Supply (±)	1V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V	1.8V ~ 5.5V	2.7V ~ 5.5V, ±1.35V ~ 2.75V
Voltage - Input Offset (Max)	10mV @ 5.5V	15mV @ 5.5V	15mV @ 5.5V	15mV @ 5.5V	5mV @ 15V	5mV @ 15V	5mV @ 15V	10mV @ 5.5V	6.5mV @ 5.5V
Current - Input Bias (Max)	0.015µA @ 5.5V	10pA @ 5.5V	10pA @ 5.5V	10pA @ 5.5V	250pA @ 15V	250pA @ 15V	250pA @ 15V	1pA @ 5.5V	10pA @ 5.5V
Current - Quiescent (Max)	13µA	1.2µA	1.2µA	1.2µA	1µA	1µA	1µA	130µA	5mA
CMRR, PSRR (Typ)	68dB CMRR, 66dB PSRR	74dB CMRR, 69.12dB PSRR	74dB CMRR, 69.12dB PSRR	74dB CMRR, 69.12dB PSRR	88dB CMRR, 105dB PSRR	88dB CMRR, 105dB PSRR	88dB CMRR, 105dB PSRR	66dB CMRR, 70dB PSRR	70dB CMRR, 100dB PSRR
Propagation Delay (Max)	4.5µs	14.6µs	14.6µs	14.6µs	—	—	—	80ns	10ns
Hysteresis	±2mV	—	—	—	—	—	—	5mV	6mV
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Through Hole	Surface Mount	Surface Mount
Inventory Status	764 Pcs	2084 Pcs	17700 Pcs	122570 Pcs	2800 Pcs	36900 Pcs	1619 Pcs	23100 Pcs	18463 Pcs

Engineering Selection Recommendations

Pin-Compatible 8-SOIC Replacements (Direct PCB Substitution)

TLV3491AID and TLV3491AIDR are active Texas Instruments comparators in 8-SOIC packaging with identical physical footprint to MAX9100ESA+. Both devices maintain CMOS push-pull rail-to-rail output and operate within the 1.8V to 5.5V supply range, overlapping the MAX9100ESA+ specification. These parts feature improved quiescent current (1.2µA vs. 13µA) and superior CMRR performance (74dB vs. 68dB). Operating temperature extends to 125°C, exceeding the original specification. ROHS3 compliance is maintained. TLV3491AIDR offers higher inventory availability (17700 pcs) in tape and reel packaging.

TLV3701ID and TLV3701IP are Texas Instruments comparators with extended supply voltage range (2.7V to 16V) and superior CMRR/PSRR characteristics (88dB/105dB). TLV3701ID is available in 8-SOIC packaging with Last Time Buy status. Both devices exhibit lower input offset voltage (5mV @ 15V) and quiescent current (1µA). TLV3701IP provides through-hole 8-DIP packaging for legacy board designs.

Functional Equivalents in Alternative Packages

TLV3491AIDBVR, TLV3701IDBVR, and MCP6561UT-E/OT are available in SOT-23-5 packaging, reducing PCB footprint by approximately 60% compared to 8-SOIC. These devices maintain functional equivalence with identical output configuration and comparable electrical performance. TLV3491AIDBVR and TLV3701IDBVR are Texas Instruments products with active status and high inventory availability (122570 pcs and 36900 pcs respectively). MCP6561UT-E/OT is a Microchip Technology alternative with TTL-compatible output and fastest propagation delay (80ns).

TLV3501AIDBVR is a Texas Instruments comparator in SOT-23-6 packaging with enhanced PSRR performance (100dB) and fastest propagation delay (10ns) among all substitutes. Supply voltage range is 2.7V to 5.5V with dual supply option (±1.35V to 2.75V). This device is suitable for noise-sensitive applications requiring superior power supply rejection.

Compliance and Certification

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original MAX9100ESA+ certification profile. Moisture sensitivity levels vary: TLV3491 series and TLV3501AIDBVR are MSL 2 (1 Year), while TLV3701 series and MCP6561UT-E/OT are MSL 1 (Unlimited), providing superior shelf-life characteristics.

Frequently Asked Questions (FAQ)

Q: Can TLV3491AIDR be used as a direct replacement for MAX9100ESA+ on existing PCBs?

A: Yes. TLV3491AIDR is pin-compatible in 8-SOIC packaging and maintains identical physical dimensions (0.154" × 3.90mm width). Both devices feature CMOS push-pull rail-to-rail output. The supply voltage range of TLV3491AIDR (1.8V to 5.5V) overlaps the MAX9100ESA+ specification (1V to 5.5V). Verify that your circuit does not operate below 1.8V supply voltage before substitution.

Q: What is the key difference between TLV3491 and TLV3701 series comparators?

A: TLV3701 series supports extended supply voltage range (2.7V to 16V, ±1.35V to 8V) compared to TLV3491 (1.8V to 5.5V). TLV3701 devices exhibit superior CMRR (88dB vs. 74dB) and PSRR (105dB vs. 69dB) performance, lower input offset voltage (5mV vs. 15mV @ rated voltage), and lower quiescent current (1µA vs. 1.2µA). TLV3701 is suitable for high-voltage and precision applications. TLV3491 is optimized for low-voltage, low-power designs.

Q: Why should I consider SOT-23-5 packages instead of 8-SOIC?

A: SOT-23-5 packaging reduces PCB footprint by approximately 60% and is suitable for space-constrained designs. TLV3491AIDBVR and TLV3701IDBVR maintain identical electrical performance to their 8-SOIC counterparts while offering compact form factor. Verify PCB layout compatibility and thermal management requirements before selecting smaller packages.

Q: Is MCP6561UT-E/OT compatible with MAX9100ESA+ applications?

A: MCP6561UT-E/OT is functionally equivalent with CMOS push-pull rail-to-rail output and 1.8V to 5.5V supply range. The device features TTL-compatible output and fastest propagation delay (80ns) among all substitutes. However, it is available only in SOT-23-5 packaging. Input offset voltage (10mV @ 5.5V) matches the original specification. Verify PCB layout and thermal requirements for this smaller package format.

Q: What is the impact of extended operating temperature range on substitute selection?

A: All substitute parts operate to 125°C, exceeding the MAX9100ESA+ specification (-40°C to 85°C). This provides design margin for thermal stress and allows use in higher-temperature environments. If your application is limited to -40°C to 85°C operation, all substitutes are suitable. Extended temperature capability does not introduce compatibility issues.

Q: How do quiescent current differences affect power consumption?

A: MAX9100ESA+ draws 13µA quiescent current. TLV3491 series draws 1.2µA, and TLV3701 series draws 1µA, representing 90% reduction in standby power consumption. MCP6561UT-E/OT draws 130µA, which is higher. For battery-powered or low-power applications, TLV3491 or TLV3701 series are preferred. For general-purpose applications, the difference is negligible.

Q: What packaging options are available for through-hole PCB designs?

A: TLV3701IP is the only substitute available in 8-DIP through-hole packaging. This device maintains identical electrical performance to TLV3701ID (8-SOIC) and is suitable for legacy board designs or applications requiring through-hole mounting. Product status is Last Time Buy, indicating limited future availability.

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