ADM1024ARU Equivalent & Substitute Parts

Part Overview

The ADM1024ARU is a specialized interface IC manufactured by onsemi, designed for PC and PDA applications. This 24-TSSOP surface mount component operates across a 2.8V to 5.5V supply voltage range and provides serial interface functionality. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

ADM1024ARU

onsemiIn Stock: 2561ADM1024ARU Datasheet

Current PartRFQ

LM87CIMT/NOPB

Texas InstrumentsIn Stock: 1788LM87CIMT/NOPB Datasheet

SimilarRFQ

LM87CIMTX/NOPB

Texas InstrumentsIn Stock: 15399LM87CIMTX/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADM1024ARU are identified based on the following critical parameters:

• Package Compatibility: 24-TSSOP form factor with identical 0.173" width and 4.40mm dimensions
• Mounting Type: Surface mount technology
• Supply Voltage Range: Overlap within 2.8V to 5.5V specification
• Interface Protocol: Serial communication capability (I2C/SMBUS)
• Pin Count: 24-pin configuration

The LM87CIMT/NOPB and LM87CIMTX/NOPB from Texas Instruments meet these substitution criteria. Both parts utilize the same 24-TSSOP package, support 2.8V to 3.8V supply operation (within the lower range of the ADM1024ARU), and provide 2-Wire Serial/I2C/SMBUS interface functionality suitable for hardware monitoring applications in PC and PDA systems.

Parameter Comparison

Engineering Selection Recommendations

LM87CIMTX/NOPB is the preferred substitute for new designs and ongoing production. This part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain stability. It provides ROHS3 compliance, addressing modern regulatory requirements that the obsolete ADM1024ARU does not meet. The Tape & Reel packaging format supports high-volume manufacturing operations.

LM87CIMT/NOPB serves as an alternative substitute where Tube packaging is acceptable. Although classified as obsolete, this variant shares identical electrical specifications and package geometry with the LM87CIMTX/NOPB. Both LM87 variants provide equivalent functionality within the overlapping supply voltage range and maintain the required 24-TSSOP package footprint.

For legacy system maintenance where the ADM1024ARU must remain in service, either LM87 variant provides functional equivalence. The supply voltage range of 2.8V to 3.8V for the LM87 series is compatible with systems operating within this window, though systems requiring the full 5.5V upper limit of the ADM1024ARU require voltage regulation or alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can LM87CIMT/NOPB and LM87CIMTX/NOPB be used interchangeably?

A: Yes. Both parts share identical electrical specifications, pin configurations, and 24-TSSOP package dimensions. The primary difference is packaging format: LM87CIMT/NOPB uses Tube packaging, while LM87CIMTX/NOPB uses Tape & Reel format. Selection depends on manufacturing process requirements and volume considerations.

Q: What is the impact of the reduced supply voltage range (2.8V ~ 3.8V) in the LM87 series compared to the ADM1024ARU (2.8V ~ 5.5V)?

A: The LM87 series operates within a narrower voltage window. Systems designed for the full 5.5V upper limit of the ADM1024ARU require voltage regulation or alternative components. Systems operating within the 2.8V to 3.8V range experience no functional impact.

Q: Are there pin-to-pin compatibility concerns between ADM1024ARU and LM87 variants?

A: Both the ADM1024ARU and LM87 series use the 24-TSSOP package with identical pin counts and spacing. Pin-level functional compatibility depends on application-specific circuit design and should be verified against respective datasheets for signal assignments.

Q: Why is LM87CIMTX/NOPB recommended over LM87CIMT/NOPB for new designs?

A: LM87CIMTX/NOPB maintains active product status with Texas Instruments, ensuring continued availability and support. LM87CIMT/NOPB is classified as obsolete, presenting potential long-term supply constraints. Both parts are functionally equivalent; the recommendation prioritizes supply chain reliability.

Q: Does the ROHS3 compliance of the LM87 series affect electrical performance?

A: ROHS3 compliance reflects manufacturing process standards and material composition, not electrical performance. The LM87 series maintains equivalent functional characteristics to the ADM1024ARU within the specified operating parameters.