TLV2354MFKB Equivalent & Substitute Parts

Part Overview

The TLV2354MFKB is a LinCMOS™ quad differential comparator manufactured by Texas Instruments, designed for low-voltage applications requiring rail-to-rail operation. This device integrates four independent differential comparators with open-drain outputs in a 20-LCCC surface mount package. The product is currently in Last Time Buy status, making identification of suitable substitute components essential for ongoing design support and procurement planning.

Substiute Parts

TLV2354MFKB

Texas InstrumentsIn Stock: 1202TLV2354MFKB Datasheet

Current PartRFQ

TLV2354IDR

Texas InstrumentsIn Stock: 4369TLV2354IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV2354MFKB is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Quad differential comparator configuration (4 independent elements)
• Supply voltage range: 2V ~ 8V minimum overlap
• Input offset voltage: 5mV @ 5V maximum
• Input bias current: 5pA maximum
• Output current capability: 20mA minimum
• Open-drain output topology
• Operating temperature range compatibility

Mechanical Compatibility Criteria:

• Surface mount package format
• Pin count and functional pinout equivalence
• Physical dimensions suitable for PCB integration

The TLV2354IDR qualifies as a manufacturer-recommended substitute based on identical electrical specifications across all critical parameters, despite differences in package format (14-SOIC vs. 20-CLCC) and operating temperature range (-40°C ~ 85°C vs. -55°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

TLV2354IDR Selection Criteria:

The TLV2354IDR is the manufacturer-recommended substitute for the TLV2354MFKB and maintains active product status with full ROHS3 compliance. This part is suitable for applications where:

• Operating temperature requirements fall within -40°C ~ 85°C
• PCB layout can accommodate 14-SOIC package format (0.154" width, 3.90mm)
• Quiescent current specification of 800µA (vs. 600µA) is acceptable
• Electrical performance requirements match the specified parameters

Limitations and Considerations:

The TLV2354IDR does not extend the lower operating temperature limit of the TLV2354MFKB (-55°C). Applications requiring operation below -40°C must retain the original TLV2354MFKB or identify alternative comparators with extended temperature specifications. Package format differences require PCB redesign for mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TLV2354IDR directly replace the TLV2354MFKB without circuit modifications?

A: Electrical substitution is valid for applications within the -40°C ~ 85°C operating range. However, package format differs (14-SOIC vs. 20-CLCC), requiring PCB layout modifications. Functional pinout equivalence must be verified against specific application schematics.

Q: What is the significance of the different operating temperature ranges?

A: The TLV2354MFKB supports -55°C ~ 125°C, while the TLV2354IDR supports -40°C ~ 85°C. Applications requiring operation below -40°C or above 85°C cannot use the TLV2354IDR as a substitute. Temperature range selection depends on end-use environment specifications.

Q: How do the quiescent current differences affect system design?

A: The TLV2354IDR draws 800µA maximum quiescent current compared to 600µA for the TLV2354MFKB. This 200µA difference is relevant for battery-powered or low-power applications. Power budget calculations must account for this increased consumption.

Q: Are both parts RoHS compliant?

A: Yes, both the TLV2354MFKB and TLV2354IDR are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for commercial applications.

Q: Why is the TLV2354MFKB in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing this product line. The TLV2354IDR, with active product status, represents the recommended migration path for new designs and ongoing procurement.