TLV3492AIDR Equivalent & Substitute Parts

Part Overview

The TLV3492AIDR is a dual-channel general-purpose comparator manufactured by Texas Instruments, featuring CMOS push-pull rail-to-rail output architecture. This device operates across a wide supply voltage range of 1.8V to 5.5V and is designed for precision signal comparison applications requiring low power consumption and fast response times. The part is currently in active production status with 2610 units in stock inventory. Substitute parts are identified when equivalent electrical performance, package compatibility, and operational characteristics align with the original specification, enabling design flexibility and supply chain optimization.

Key Parameters

Parameter	Value	Specification
Manufacturer Part Number	TLV3492AIDR	Texas Instruments
Number of Elements	2	Dual Comparator
Output Type	CMOS, Push-Pull, Rail-to-Rail	Full-swing output capability
Voltage Supply Range	1.8V ~ 5.5V	Single or dual supply
Input Offset Voltage (Max)	15mV @ 5.5V	DC accuracy specification
Input Bias Current (Max)	10pA @ 5.5V	High impedance input
Quiescent Current (Max)	1.2µA	Low power operation
CMRR / PSRR (Typ)	74dB CMRR, 69.12dB PSRR	Noise rejection
Propagation Delay (Max)	14.6µs	Response time
Operating Temperature	-40°C ~ 125°C	Industrial grade
Package	8-SOIC (0.154", 3.90mm Width)	Surface mount
RoHS Status	ROHS3 Compliant	Environmental compliance
MSL Rating	2 (1 Year)	Moisture sensitivity

Substitute Part Grouping Explanation

Substitute parts for the TLV3492AIDR are classified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Number of comparator elements (2 channels required)
Output type (CMOS, Push-Pull, Rail-to-Rail capability)
Supply voltage range compatibility (minimum 1.8V ~ 5.5V overlap)
Input offset voltage performance (≤15mV specification)
Quiescent current (≤1.2µA preferred for low-power applications)
Operating temperature range (-40°C minimum for industrial applications)
Package form factor (8-pin surface mount variants)

Parametric Equivalent Category: TLV3491AIDR qualifies as a parametric equivalent despite having a single comparator element, as it maintains identical electrical specifications and package footprint, suitable for applications requiring only one channel.

Manufacturer Recommended Alternatives: LTC6702 series (CDC, HTS8, ITS8 variants), MAX9017AEKA/V+T, MAX9077ESA+, and MAX976 series (ESA+T, EUA+T variants) provide functional substitution with trade-offs in specific parameters such as propagation delay, hysteresis characteristics, and operating temperature ranges.

Parameter Comparison

Parameter	TLV3492AIDR	TLV3491AIDR	LTC6702CDC#TRMPBF	LTC6702HTS8#TRPBF	LTC6702ITS8#TRMPBF	MAX9017AEKA/V+T	MAX9077ESA+	MAX976ESA+T	MAX976EUA+T
Number of Elements	2	1	2	2	2	2	2	2	2
Output Type	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	CMOS, Push-Pull, Rail-to-Rail, TTL	CMOS, Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail
Supply Voltage Range	1.8V ~ 5.5V	1.8V ~ 5.5V	1.7V ~ 5.5V	1.7V ~ 5.5V	1.7V ~ 5.5V	1.8V ~ 5.5V	2.1V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Input Offset Voltage (Max)	15mV @ 5.5V	15mV @ 5.5V	4.6mV @ 3V	4.6mV @ 3V	4.6mV @ 3V	5mV @ 5V	1mV @ 5V	2mV @ 5V	2mV @ 5V
Input Bias Current (Max)	10pA @ 5.5V	10pA @ 5.5V	—	—	—	0.001µA @ 5V	0.005µA @ 5V	0.075µA @ 5.5V	0.075µA @ 5.5V
Quiescent Current (Max)	1.2µA	1.2µA	32µA	32µA	32µA	2.8µA	6.6µA	650µA	650µA
CMRR / PSRR (Typ)	74dB CMRR, 69.12dB PSRR	74dB CMRR, 69.12dB PSRR	70dB CMRR, 65dB PSRR	70dB CMRR, 65dB PSRR	70dB CMRR, 65dB PSRR	80dB PSRR	82dB CMRR, 77dB PSRR	95dB CMRR, 100dB PSRR	95dB CMRR, 100dB PSRR
Propagation Delay (Max)	14.6µs	14.6µs	450ns	450ns	450ns	28µs	580ns	28ns	28ns
Hysteresis	—	—	7.2mV	8.2mV	5mV	4mV	—	4mV	5mV
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC	8-SOIC	8-DFN (2x2)	SOT-23-8	SOT-23-8	SOT-23-8	8-SOIC	8-SOIC	8-TSSOP / 8-MSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (8-SOIC Package): TLV3491AIDR and MAX9077ESA+ maintain identical 8-SOIC footprints and pinouts. TLV3491AIDR is suitable for single-channel applications with identical electrical performance. MAX9077ESA+ offers superior input offset voltage (1mV vs. 15mV) and CMRR/PSRR performance but requires minimum 2.1V supply voltage.

Package-Variant Substitutes (Functional Equivalence): LTC6702 series devices (CDC, HTS8, ITS8 variants) provide dual-comparator functionality with faster propagation delay (450ns vs. 14.6µs) but require PCB layout modifications due to different package footprints (8-DFN or SOT-23-8). LTC6702CDC#TRMPBF operates only to 70°C, limiting industrial temperature range applications. LTC6702HTS8#TRPBF and LTC6702ITS8#TRMPBF extend to -40°C minimum with full industrial temperature coverage.

High-Performance Alternatives: MAX976ESA+T and MAX976EUA+T deliver exceptional propagation delay (28ns vs. 14.6µs) and superior CMRR/PSRR (95dB/100dB) but consume significantly higher quiescent current (650µA vs. 1.2µA) and require minimum 2.7V supply. These are suitable for high-speed precision applications where power consumption is not critical.

Automotive-Grade Option: MAX9017AEKA/V+T includes AEC-Q100 automotive qualification with integrated voltage reference, suitable for automotive comparator applications requiring external reference elimination.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 export classification. MSL ratings vary; LTC6702 and MAX series devices feature MSL-1 (unlimited shelf life) versus TLV3492AIDR MSL-2 (1-year limit), providing superior moisture tolerance for extended storage.

Frequently Asked Questions (FAQ)

Q: Can TLV3491AIDR replace TLV3492AIDR in all applications? A: TLV3491AIDR is electrically equivalent but contains only one comparator element versus two in the TLV3492AIDR. It is suitable only for single-channel applications. Dual-channel designs require either two TLV3491AIDR devices or retention of the TLV3492AIDR.

Q: What are the key differences between LTC6702 package variants? A: LTC6702CDC#TRMPBF uses 8-DFN (2x2) package with 0°C to 70°C operating range. LTC6702HTS8#TRPBF and LTC6702ITS8#TRMPBF use SOT-23-8 packages with extended temperature ranges (-40°C to 125°C and -40°C to 85°C respectively). Package selection depends on PCB space constraints and thermal requirements.

Q: Why does MAX976 series show higher quiescent current? A: MAX976ESA+T and MAX976EUA+T are optimized for high-speed applications (28ns propagation delay) rather than low-power operation. The 650µA quiescent current reflects this performance trade-off. These devices are appropriate for precision timing-critical circuits where power consumption is secondary.

Q: Are all substitute parts pin-compatible with TLV3492AIDR? A: No. TLV3491AIDR and MAX9077ESA+ maintain 8-SOIC pin compatibility. LTC6702 variants (8-DFN, SOT-23-8) and MAX976EUA+T (8-TSSOP/8-MSOP) require different PCB footprints and cannot be used as direct drop-in replacements without layout redesign.

Q: Which substitute offers the best input offset voltage performance? A: MAX9077ESA+ provides the lowest input offset voltage at 1mV @ 5V, followed by MAX976 series at 2mV @ 5V. LTC6702 variants offer 4.6mV @ 3V. The original TLV3492AIDR specifies 15mV @ 5.5V, making these alternatives suitable for precision applications requiring tighter DC accuracy.

Q: What is the significance of MSL rating differences? A: TLV3492AIDR carries MSL-2 (1-year shelf life limit), while substitute parts feature MSL-1 (unlimited shelf life). MSL-1 devices tolerate longer storage periods and higher humidity exposure without moisture-induced failures, reducing inventory management constraints.

Q: Can MAX9017AEKA/V+T be used in non-automotive applications? A: Yes. MAX9017AEKA/V+T is AEC-Q100 qualified but functions in standard industrial and commercial applications. Its integrated voltage reference and automotive-grade reliability make it suitable for any application requiring these features, though it may represent cost premium over non-automotive alternatives.

Q: What supply voltage range is common across all substitutes? A: The overlapping supply range across all listed substitutes is 1.8V to 5.5V, matching the original TLV3492AIDR specification. However, MAX976 series requires minimum 2.7V, and MAX9077ESA+ requires minimum 2.1V, limiting their use in ultra-low-voltage applications below these thresholds.

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