MAX9077ESA Equivalent & Substitute Parts

Part Overview

The MAX9077ESA is a dual-channel general-purpose comparator manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface-mount package. This device features push-pull, rail-to-rail output architecture with a supply voltage range of 2.1V to 5.5V, making it suitable for low-voltage analog signal comparison applications. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	MAX9077ESA
Number of Elements	2
Output Type	Push-Pull, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	2.1V ~ 5.5V
Voltage - Input Offset (Max)	1mV @ 5V
Current - Input Bias (Max)	0.005µA @ 5V
Current - Quiescent (Max)	6.6µA
CMRR, PSRR (Typ)	82dB CMRR, 77dB PSRR
Propagation Delay (Max)	580ns
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MAX9077ESA is determined by the following critical parameters:

Package compatibility: 8-SOIC surface-mount form factor
Dual-channel configuration: 2 independent comparator elements
Output architecture: Push-pull, rail-to-rail capability
Supply voltage range: Minimum 2.1V to 5.5V operation
Input offset voltage: Maximum 1mV specification at 5V
Input bias current: Maximum 0.005µA at 5V
Quiescent current: Maximum 6.6µA
Common-mode and power-supply rejection: CMRR ≥82dB, PSRR ≥77dB
Propagation delay: Maximum 580ns
Operating temperature range: -40°C to 85°C minimum
Compliance certifications: ROHS3 compliance required

Substitute parts are grouped into two categories: direct form-factor replacements (8-SOIC surface mount) and functional equivalents with alternative packaging (8-DIP through-hole, SOT-23-8, 8-VSSOP).

Parameter Comparison

Part Number	Manufacturer	Package	Product Status	Number of Elements	Output Type	Supply Voltage (V)	Input Offset Max (mV)	Input Bias Max (µA)	Quiescent Current Max (µA)	Operating Temp (°C)	CMRR/PSRR (dB)
MAX9077ESA	Analog Devices	8-SOIC	Obsolete	2	Push-Pull, Rail-to-Rail	2.1 ~ 5.5	1	0.005	6.6	-40 ~ 85	82/77
MAX9077ESA+	Analog Devices	8-SOIC	Active	2	Push-Pull, Rail-to-Rail	2.1 ~ 5.5	1	0.005	6.6	-40 ~ 85	82/77
TLV3492AMDREP	Texas Instruments	8-SOIC	Active	2	CMOS, Push-Pull, Rail-to-Rail	1.8 ~ 5.5	15	0.01	2.1	-55 ~ 125	74/69.12
TLV3492AIDR	Texas Instruments	8-SOIC	Active	2	CMOS, Push-Pull, Rail-to-Rail	1.8 ~ 5.5	15	0.01	1.2	-40 ~ 125	74/69.12
TLV3492AID	Texas Instruments	8-SOIC	Active	2	CMOS, Push-Pull, Rail-to-Rail	1.8 ~ 5.5	15	0.01	1.2	-40 ~ 125	74/69.12
ALD2302ASAL	Advanced Linear Devices	8-SOIC	Active	2	CMOS, NMOS, Push-Pull, TTL	4 ~ 10, ±2 ~ 5	1	0.001	500	0 ~ 70	—
ALD2332BSAL	Advanced Linear Devices	8-SOIC	Active	2	CMOS, NMOS, Push-Pull, TTL	4 ~ 10, ±2 ~ 5	1	0.02	500	0 ~ 70	80/75
ALD2332SAL	Advanced Linear Devices	8-SOIC	Active	2	CMOS, NMOS, Push-Pull, TTL	4 ~ 10, ±2 ~ 5	2	0.02	500	0 ~ 70	80/75
ALD2332BPAL	Advanced Linear Devices	8-DIP	Active	2	CMOS, NMOS, Push-Pull, TTL	4 ~ 10, ±2 ~ 5	1	0.02	500	0 ~ 70	80/75
TLV3502AIDCNR	Texas Instruments	SOT-23-8	Active	2	CMOS, Push-Pull, Rail-to-Rail, TTL	2.7 ~ 5.5, ±1.35 ~ 2.75	6.5	0.01	5	-40 ~ 125	70/100
TLV3702IDGKR	Texas Instruments	8-VSSOP	Active	2	CMOS, Push-Pull, Rail-to-Rail	2.7 ~ 16, ±1.35 ~ 8	5	0.25	1	-40 ~ 125	88/105

Engineering Selection Recommendations

Direct replacement (active product status): MAX9077ESA+ is the direct successor to MAX9077ESA, maintaining identical electrical specifications and 8-SOIC packaging. This part is currently in active production status and is the preferred choice for direct substitution.

Form-factor compatible alternatives (8-SOIC surface mount): TLV3492AMDREP, TLV3492AIDR, and TLV3492AID from Texas Instruments provide 8-SOIC packaging with active product status. These devices operate across an extended temperature range (-55°C to 125°C or -40°C to 125°C) and feature lower quiescent current consumption (1.2µA to 2.1µA). Input offset voltage is higher at 15mV, and CMRR/PSRR specifications are reduced compared to the original part. These are suitable for applications where extended temperature operation and lower power consumption are beneficial.

ALD2302ASAL and ALD2332BSAL/SAL from Advanced Linear Devices offer 8-SOIC packaging with active status. These parts support higher supply voltage ranges (4V to 10V, ±2V to 5V) but operate within a narrower temperature range (0°C to 70°C). Quiescent current is significantly higher at 500µA. These are appropriate for higher-voltage applications where the narrower temperature range is acceptable.

Alternative packaging options: ALD2332BPAL provides 8-DIP through-hole packaging for applications requiring through-hole assembly. TLV3502AIDCNR offers SOT-23-8 miniature packaging. TLV3702IDGKR provides 8-VSSOP packaging with the highest CMRR/PSRR specifications (88dB/105dB) and widest supply voltage range (2.7V to 16V, ±1.35V to 8V), suitable for precision applications.

All substitute parts listed carry ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX9077ESA+ be used as a direct replacement for MAX9077ESA? A: Yes. MAX9077ESA+ is the active production equivalent with identical electrical specifications, supply voltage range, input offset voltage, and 8-SOIC packaging. The only difference is product status (active vs. obsolete) and packaging format (tube vs. unspecified for the original).

Q: What are the key differences between MAX9077ESA and TLV3492AMDREP? A: Both devices feature dual comparators in 8-SOIC packaging with push-pull, rail-to-rail outputs. TLV3492AMDREP operates at lower supply voltages (1.8V minimum vs. 2.1V) and extended temperature range (-55°C to 125°C vs. -40°C to 85°C). However, TLV3492AMDREP has higher input offset voltage (15mV vs. 1mV), lower CMRR/PSRR (74dB/69.12dB vs. 82dB/77dB), and significantly longer propagation delay (14.6µs vs. 580ns). Selection depends on whether extended temperature operation or precision offset voltage is prioritized.

Q: Are Advanced Linear Devices parts suitable replacements? A: ALD2302ASAL and ALD2332 series parts are functionally compatible dual comparators with 8-SOIC packaging and active product status. However, they require higher minimum supply voltage (4V vs. 2.1V), operate within a narrower temperature range (0°C to 70°C vs. -40°C to 85°C), and consume significantly higher quiescent current (500µA vs. 6.6µA). These parts are suitable only for applications where the higher supply voltage and narrower temperature range are acceptable.

Q: Can I use TLV3702IDGKR as a substitute? A: TLV3702IDGKR is a dual comparator with superior CMRR/PSRR specifications (88dB/105dB) and wider supply voltage range (2.7V to 16V). However, it uses 8-VSSOP packaging instead of 8-SOIC, requiring PCB layout redesign. Input offset voltage is higher (5mV vs. 1mV), and input bias current is significantly higher (250pA vs. 0.005µA). This part is suitable for precision applications where package size reduction and extended voltage range justify the layout changes.

Q: What is the difference between 8-SOIC and 8-DIP packaging? A: 8-SOIC is a surface-mount package (0.154" width, 3.90mm), while 8-DIP is a through-hole package (0.300" width, 7.62mm). ALD2332BPAL provides the through-hole option for applications using through-hole assembly processes. Electrical specifications remain equivalent between the two package types.

Q: Which substitute offers the lowest power consumption? A: TLV3702IDGKR provides the lowest quiescent current at 1µA maximum, followed by TLV3492AIDR and TLV3492AID at 1.2µA. The original MAX9077ESA draws 6.6µA maximum quiescent current. For battery-powered or ultra-low-power applications, TLV3702IDGKR is the optimal choice despite its different packaging.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed (MAX9077ESA+, TLV3492 series, ALD2302/ALD2332 series, TLV3502AIDCNR, and TLV3702IDGKR) carry ROHS3 compliance certification and REACH unaffected status, matching the regulatory requirements of the original MAX9077ESA.

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