MAX976ESA-T Equivalent & Substitute Parts

Part Overview

The MAX976ESA-T 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 2.7V to 5.5V, making it suitable for low-voltage signal comparison applications. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Number of Elements	2
Output Type	Push-Pull, Rail-to-Rail
Voltage - Supply, Single/Dual (±)	2.7V ~ 5.5V
Voltage - Input Offset (Max)	2mV @ 5V
Current - Input Bias (Max)	0.075µA @ 5.5V
Current - Quiescent (Max)	650µA
CMRR, PSRR (Typ)	95dB CMRR, 100dB PSRR
Propagation Delay (Max)	28ns
Hysteresis	4mV
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX976ESA-T is determined by the following critical parameters:

Number of Elements: Must be 2 (dual-channel configuration)
Output Type: Must include Push-Pull and Rail-to-Rail capability
Supply Voltage Range: Must support 2.7V ~ 5.5V operation
Package Type: 8-SOIC surface-mount preferred for direct PCB compatibility; alternative packages (SOT-23-8, 8-VSSOP) acceptable with board redesign
Input Offset Voltage: Maximum 2mV @ 5V for precision applications
Propagation Delay: Maximum 28ns for timing-critical circuits
Operating Temperature: -40°C ~ 85°C minimum range
Compliance: ROHS3 compliance required

Substitute parts are grouped into three categories:

Parametric Equivalents (Same Manufacturer): MAX976ESA+T and MAX998ESA+T from Analog Devices. MAX976ESA+T is an exact parametric match with active product status. MAX998ESA+T is a single-element variant suitable only for applications requiring one comparator channel.
Manufacturer-Recommended Alternatives (Different Manufacturers): ALD2332ASAL, ALD2332PAL, TLV3492AIDCNT, TLV3502AID, TLV3502AIDCNT, TLV3502AQDCNRQ1, TLV3702CDGK, and TLV3702CDGKR. These parts meet the core electrical requirements but may have variations in secondary parameters such as input offset voltage, quiescent current, or operating temperature range.
Package Variants: Parts available in alternative packages (SOT-23-8, 8-VSSOP, 8-PDIP) for applications where package footprint flexibility is required.

Parameter Comparison

Part Number	Manufacturer	Number of Elements	Output Type	Supply Voltage (V)	Input Offset Max (mV)	Quiescent Current Max (µA)	Propagation Delay Max (ns)	Operating Temp (°C)	Package	Product Status
MAX976ESA-T	Analog Devices	2	Push-Pull, Rail-to-Rail	2.7 ~ 5.5	2 @ 5V	650	28	-40 ~ 85	8-SOIC	Obsolete
MAX976ESA+T	Analog Devices	2	Push-Pull, Rail-to-Rail	2.7 ~ 5.5	2 @ 5V	650	28	-40 ~ 85	8-SOIC	Active
MAX998ESA+T	Analog Devices	1	Push-Pull, Rail-to-Rail	2.7 ~ 5.5	2 @ 5V	650	28	-40 ~ 85	8-SOIC	Active
ALD2332ASAL	Advanced Linear Devices	2	CMOS, NMOS, Push-Pull, TTL	4 ~ 10, ±2 ~ 5	0.5 @ 5V	500	—	0 ~ 70	8-SOIC	Active
ALD2332PAL	Advanced Linear Devices	2	CMOS, NMOS, Push-Pull, TTL	4 ~ 10, ±2 ~ 5	2 @ 5V	500	—	0 ~ 70	8-PDIP	Active
TLV3492AIDCNT	Texas Instruments	2	CMOS, Push-Pull, Rail-to-Rail	1.8 ~ 5.5	15 @ 5.5V	1.2	13500	-40 ~ 125	SOT-23-8	Active
TLV3502AID	Texas Instruments	2	CMOS, Push-Pull, Rail-to-Rail, TTL	2.7 ~ 5.5, ±1.35 ~ 2.75	6.5 @ 5.5V	5000	10	-40 ~ 125	8-SOIC	Active
TLV3502AIDCNT	Texas Instruments	2	CMOS, Push-Pull, Rail-to-Rail, TTL	2.7 ~ 5.5, ±1.35 ~ 2.75	6.5 @ 5.5V	5000	10	-40 ~ 125	SOT-23-8	Active
TLV3502AQDCNRQ1	Texas Instruments	2	CMOS, Push-Pull, Rail-to-Rail, TTL	2.7 ~ 5.5, ±1.35 ~ 2.75	6.5 @ 5.5V	5000	10	-40 ~ 125	SOT-23-8	Active
TLV3702CDGK	Texas Instruments	2	CMOS, Push-Pull, Rail-to-Rail	2.5 ~ 16, ±1.25 ~ 8	5 @ 15V	1	—	0 ~ 70	8-VSSOP	Obsolete
TLV3702CDGKR	Texas Instruments	2	CMOS, Push-Pull, Rail-to-Rail	2.5 ~ 16, ±1.25 ~ 8	5 @ 15V	1	—	0 ~ 70	8-VSSOP	Obsolete

Engineering Selection Recommendations

Primary Recommendation: MAX976ESA+T

The MAX976ESA+T is the direct parametric equivalent of the MAX976ESA-T with identical electrical specifications and active product status. This part provides seamless substitution with no design modifications required. It is available in the same 8-SOIC package and maintains full compliance with ROHS3 and REACH requirements.

Secondary Recommendation: TLV3502AIDCNT or TLV3502AQDCNRQ1

The TLV3502 series from Texas Instruments offers active product status and extended operating temperature range (-40°C ~ 125°C). The TLV3502AQDCNRQ1 variant includes AEC-Q100 automotive qualification, suitable for automotive and industrial applications. These parts are available in high inventory quantities. Trade-offs include higher input offset voltage (6.5mV vs. 2mV) and faster propagation delay (10ns vs. 28ns), which may require circuit validation in precision applications.

Alternative for Through-Hole Assembly: ALD2332PAL

For applications requiring through-hole mounting, the ALD2332PAL provides dual-channel comparison in an 8-PDIP package with active product status. Input offset voltage matches the original specification (2mV @ 5V). Operating temperature range is limited to 0°C ~ 70°C, requiring thermal assessment for extended-range applications.

Not Recommended: MAX998ESA+T

The MAX998ESA+T contains only one comparator element and is unsuitable for applications requiring dual-channel functionality.

Not Recommended: TLV3702CDGK and TLV3702CDGKR

Both variants are listed as obsolete and should not be selected for new designs despite meeting electrical requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX976ESA+T be used as a direct replacement for MAX976ESA-T?

A: Yes. The MAX976ESA+T is parametrically identical to the MAX976ESA-T with matching electrical specifications, package type, and compliance certifications. The only difference is product status: MAX976ESA+T is active while MAX976ESA-T is obsolete.

Q: What are the key differences between the MAX976ESA-T and TLV3502AIDCNT?

A: Both are dual-channel comparators with push-pull, rail-to-rail outputs and support the 2.7V ~ 5.5V supply range. Key differences: TLV3502AIDCNT has higher input offset voltage (6.5mV vs. 2mV), lower quiescent current (5mA vs. 650µA), faster propagation delay (10ns vs. 28ns), and extended operating temperature (-40°C ~ 125°C vs. -40°C ~ 85°C). Package differs: SOT-23-8 vs. 8-SOIC, requiring PCB redesign.

Q: Is the ALD2332ASAL suitable for the MAX976ESA-T application?

A: The ALD2332ASAL meets the dual-channel, push-pull output requirements and operates within the 2.7V ~ 5.5V range. However, it specifies a narrower operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C) and lower input bias current (20pA vs. 0.075µA). Verify thermal and bias current requirements before selection.

Q: Can I use a single-element comparator like MAX998ESA+T instead of the dual-channel MAX976ESA-T?

A: No. The MAX998ESA+T contains only one comparator element. Applications requiring dual-channel functionality must use parts with two elements, such as MAX976ESA+T, TLV3502 series, or ALD2332 variants.

Q: What is the difference between TLV3502AID and TLV3502AIDCNT?

A: Both are dual-channel comparators with identical electrical specifications. The primary difference is packaging: TLV3502AID is supplied in tube packaging, while TLV3502AIDCNT is supplied in cut tape with Digi-Reel. Electrical performance and compliance are identical.

Q: Is TLV3502AQDCNRQ1 suitable for automotive applications?

A: Yes. The TLV3502AQDCNRQ1 carries AEC-Q100 automotive qualification and is graded for automotive use. It meets the same electrical specifications as other TLV3502 variants while providing automotive-grade reliability assurance.

Q: Can I substitute an 8-VSSOP package part for the 8-SOIC MAX976ESA-T?

A: Package substitution requires PCB redesign. Parts like TLV3702CDGK and TLV3702CDGKR use 8-VSSOP packaging, which has different pin spacing and footprint than 8-SOIC. Electrical compatibility exists, but physical board layout changes are mandatory.

Q: Why are TLV3702CDGK and TLV3702CDGKR listed as obsolete?

A: Both parts are marked with obsolete product status. While they meet electrical requirements, they should not be selected for new designs due to potential supply discontinuation and lack of long-term availability assurance.

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