TLV7021DPWR Equivalent & Substitute Parts

Part Overview

The TLV7021DPWR is an active, single-element open-drain comparator manufactured by Texas Instruments in a 5-XFDFN surface mount package. This device operates across a 1.6V to 5.5V supply range and is designed for low-power signal comparison applications. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this comparator category.

Substiute Parts

TLV7021DPWR

Texas InstrumentsIn Stock: 41161TLV7021DPWR Datasheet

Current PartRFQ

BU7250G-TR

Rohm SemiconductorIn Stock: 3495BU7250G-TR Datasheet

MFR RecommendedRFQ

MAX40008ANT+

Analog Devices Inc./Maxim IntegratedIn Stock: 1038MAX40008ANT+ Datasheet

MFR RecommendedRFQ

TS7221BILT

STMicroelectronicsIn Stock: 596140TS7221BILT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLV7021DPWR are qualified based on the following criteria:

Electrical Compatibility Requirements:

• Open-drain output configuration
• Supply voltage range overlap with 1.6V ~ 5.5V specification
• Input offset voltage within acceptable tolerance for comparison applications
• Quiescent current performance suitable for low-power operation
• Propagation delay characteristics compatible with signal timing requirements

Mechanical Compatibility Requirements:

• Surface mount packaging
• Pin count and functional equivalence (single-element comparator)
• MSL rating of 1 or equivalent moisture sensitivity

Compliance Requirements:

• ROHS3 compliance
• Active product status
• Operating temperature range supporting -40°C ~ 125°C or subset thereof

The three substitute parts identified meet these criteria with variations in package form factor, supply voltage range, and specific performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

BU7250G-TR (Rohm Semiconductor): This substitute operates within 1.8V ~ 5.5V, meeting the upper supply range of the TLV7021DPWR. Input offset voltage of 11mV is within acceptable tolerance for general comparison applications. The 5-SSOP package provides equivalent pin functionality with different form factor. Operating temperature range extends to 85°C, which is a subset of the original specification. ROHS3 compliance and MSL-1 rating are maintained. This part is suitable for applications where the 1.6V lower supply limit is not required.

MAX40008ANT+ (Analog Devices Inc./Maxim Integrated): This substitute operates within 1.7V ~ 5.5V, covering most of the TLV7021DPWR supply range. Input offset voltage of 5mV is superior to the original specification. The 6-WLP package represents a different form factor with smaller footprint. Operating temperature range extends to 125°C, matching the original specification. ROHS3 compliance and MSL-1 rating are maintained. This part is suitable for applications requiring lower input offset voltage and compact packaging, with the trade-off of 1.7V minimum supply versus 1.6V.

TS7221BILT (STMicroelectronics): This substitute operates within 2.7V ~ 10V, which does not cover the lower 1.6V supply limit of the TLV7021DPWR. Input offset voltage of 15mV is higher than the original specification. The SOT-23-5 package provides equivalent pin functionality with different form factor. Operating temperature range extends to 85°C, which is a subset of the original specification. ROHS3 compliance and MSL-1 rating are maintained. This part is suitable for applications operating at 2.7V or higher supply voltages where higher input offset voltage is acceptable.

Frequently Asked Questions (FAQ)

Q: Can BU7250G-TR replace TLV7021DPWR in all applications?

A: BU7250G-TR is suitable for applications where the minimum supply voltage requirement is 1.8V or higher. If your circuit requires operation at 1.6V, this substitute is not appropriate. All other electrical parameters are compatible.

Q: What is the primary difference between the MAX40008ANT+ and TLV7021DPWR?

A: The MAX40008ANT+ features a 6-WLP package instead of 5-XFDFN, resulting in a smaller footprint. It also provides superior input offset voltage performance (5mV versus 8mV). The minimum supply voltage is 1.7V instead of 1.6V. Both maintain the same maximum operating temperature of 125°C.

Q: Is TS7221BILT compatible with low-voltage applications?

A: TS7221BILT has a minimum supply voltage of 2.7V, making it unsuitable for applications requiring 1.6V operation. It is compatible with higher-voltage systems and offers extended supply range up to 10V.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All three substitute parts—BU7250G-TR, MAX40008ANT+, and TS7221BILT—are ROHS3 compliant with MSL-1 moisture sensitivity rating, matching the original TLV7021DPWR specification.

Q: How do package differences affect PCB layout?

A: TLV7021DPWR uses 5-XFDFN (0.80x0.80mm). BU7250G-TR uses 5-SSOP, MAX40008ANT+ uses 6-WLP (1.08x0.73mm), and TS7221BILT uses SOT-23-5. Each package has different footprint dimensions and pin spacing. PCB layout must be redesigned accordingly for each substitute.

Q: Which substitute has the fastest propagation delay?

A: TLV7021DPWR specifies 350ns maximum propagation delay. BU7250G-TR specifies 750ns typical, and MAX40008ANT+ specifies 850ns typical. TS7221BILT does not specify propagation delay. For timing-critical applications, TLV7021DPWR provides the fastest response.