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 features low input offset voltage of 10mV at 5.5V. The product is currently obsolete, necessitating identification of active equivalent and substitute parts that maintain functional compatibility while offering improved availability and potentially enhanced performance characteristics.

Key Parameters

Parameter	MAX9100ESA
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete
Package / Case	8-SOIC (0.154", 3.90mm Width)
Type	General Purpose Comparator
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
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX9100ESA is determined by the following critical parameters:

Package Compatibility: The original 8-SOIC package can be directly replaced by parts in identical 8-SOIC packaging (TLV3491AID, TLV3491AIDR, TLV3701ID) or by smaller form factors such as SOT-23-5 (MCP6561UT-E/OT, TLV3491AIDBVR, TLV3701IDBVR) with appropriate PCB layout modifications.

Electrical Compatibility: All substitute parts maintain CMOS push-pull rail-to-rail output configuration. Supply voltage ranges must encompass or exceed the original 1V to 5.5V specification. Input offset voltage, input bias current, quiescent current, and propagation delay are evaluated for functional equivalence within the application context.

Product Status: Active status substitutes (MCP6561UT-E/OT, TLV3491AID, TLV3491AIDBVR, TLV3491AIDR, TLV3501AIDBVR, TLV3701IDBVR) provide long-term availability. Last Time Buy status parts (TLV3701ID, TLV3701IP) offer limited procurement windows.

Compliance & Certifications: All listed substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements.

Parameter Comparison

Parameter	MAX9100ESA	MCP6561UT-E/OT	TLV3491AID	TLV3491AIDBVR	TLV3491AIDR	TLV3501AIDBVR	TLV3701ID	TLV3701IDBVR	TLV3701IP
Product Status	Obsolete	Active	Active	Active	Active	Active	Last Time Buy	Active	Last Time Buy
Package / Case	8-SOIC	SOT-23-5	8-SOIC	SOT-23-5	8-SOIC	SOT-23-6	8-SOIC	SOT-23-5	8-DIP
Output Type	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail, TTL	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	CMOS, Push-Pull, Rail-to-Rail	CMOS, Push-Pull, Rail-to-Rail
Voltage - Supply (Min-Max)	1V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	1.8V ~ 5.5V	2.7V ~ 5.5V, ±1.35V ~ 2.75V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V	2.7V ~ 16V, ±1.35V ~ 8V
Voltage - Input Offset (Max)	10mV @ 5.5V	10mV @ 5.5V	15mV @ 5.5V	15mV @ 5.5V	15mV @ 5.5V	6.5mV @ 5.5V	5mV @ 15V	5mV @ 15V	5mV @ 15V
Current - Input Bias (Max)	0.015µA @ 5.5V	1pA @ 5.5V	10pA @ 5.5V	10pA @ 5.5V	10pA @ 5.5V	10pA @ 5.5V	250pA @ 15V	250pA @ 15V	250pA @ 15V
Current - Quiescent (Max)	13µA	130µA	1.2µA	1.2µA	1.2µA	5mA	1µA	1µA	1µA
CMRR (Typ)	68dB	66dB	74dB	74dB	74dB	70dB	88dB	88dB	88dB
PSRR (Typ)	66dB	70dB	69.12dB	69.12dB	69.12dB	100dB	105dB	105dB	105dB
Propagation Delay (Max)	4.5µs	80ns	14.6µs	14.6µs	14.6µs	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
MSL	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	Not Applicable

Engineering Selection Recommendations

For Direct 8-SOIC Package Replacement with Active Status: TLV3491AID, TLV3491AIDR, and TLV3701IDBVR (in SOT-23-5) provide active product status with extended availability. TLV3491 variants offer improved CMRR (74dB) and lower quiescent current (1.2µA) compared to the original MAX9100ESA. TLV3701 variants deliver superior CMRR (88dB) and PSRR (105dB) with extended supply voltage range (2.7V ~ 16V), suitable for applications requiring higher voltage operation.

For Space-Constrained Applications: MCP6561UT-E/OT and TLV3491AIDBVR in SOT-23-5 packaging reduce board footprint while maintaining electrical compatibility. MCP6561UT-E/OT features exceptionally low input bias current (1pA) and fast propagation delay (80ns). TLV3501AIDBVR in SOT-23-6 offers the fastest propagation delay (10ns) and highest PSRR (100dB) among active substitutes.

For Extended Temperature and Voltage Range Applications: TLV3701ID, TLV3701IDBVR, and TLV3701IP support supply voltages up to 16V and dual supply operation (±1.35V ~ 8V), with superior CMRR (88dB) and PSRR (105dB). These parts are suitable for industrial and automotive applications requiring wider operating margins.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status. MSL ratings vary: TLV3701 variants and MCP6561UT-E/OT carry MSL 1 (unlimited), while TLV3491 and TLV3501 variants carry MSL 2 (1 year), requiring appropriate moisture control during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can TLV3491AIDBVR in SOT-23-5 directly replace MAX9100ESA in 8-SOIC? A: Electrical functionality is compatible, but PCB layout modification is required. SOT-23-5 has different pin configuration and footprint than 8-SOIC. Pin mapping must be verified against datasheets before implementation.

Q: What is the key difference between TLV3491 and TLV3701 variants? A: TLV3491 operates at 1.8V ~ 5.5V supply with 74dB CMRR and 1.2µA quiescent current. TLV3701 operates at 2.7V ~ 16V supply with 88dB CMRR, 105dB PSRR, and 1µA quiescent current. TLV3701 is preferred for higher voltage applications and superior noise rejection.

Q: Is MCP6561UT-E/OT suitable for low-voltage applications below 1.8V? A: No. MCP6561UT-E/OT minimum supply voltage is 1.8V, which exceeds the original MAX9100ESA minimum of 1V. For applications requiring 1V operation, TLV3491 variants (1.8V minimum) or TLV3701 variants (2.7V minimum) are not suitable. Verify application supply voltage requirements before selection.

Q: What is the impact of MSL 2 (1 Year) rating on TLV3491 variants? A: MSL 2 requires moisture control during storage and handling. Parts must be stored in dry conditions and used within one year of manufacture date. For applications with extended storage requirements, select MSL 1 parts such as TLV3701IDBVR or MCP6561UT-E/OT.

Q: Which substitute offers the fastest response time? A: TLV3501AIDBVR provides the fastest propagation delay at 10ns, followed by MCP6561UT-E/OT at 80ns. Original MAX9100ESA has 4.5µs propagation delay. TLV3491 variants have 14.6µs. Select based on timing-critical application requirements.

Q: Are through-hole options available? A: TLV3701IP in 8-DIP (0.300", 7.62mm) provides through-hole mounting. Product status is Last Time Buy with limited availability. All other substitutes are surface mount only.

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