LTC4307IMS8 Equivalent & Substitute Parts

Part Overview

The LTC4307IMS8 is an I2C bus accelerator and buffer interface component manufactured by Analog Devices Inc. This 2-channel buffer accelerator operates at a maximum data rate of 400kHz and is designed for I2C hotswap applications. The device is housed in an 8-MSOP surface mount package and operates across a supply voltage range of 2.3V to 5.5V with a maximum supply current of 8mA. The LTC4307IMS8 maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for functionally compatible alternatives from different manufacturers that meet the same electrical and mechanical requirements.

Substiute Parts

LTC4307IMS8

Analog Devices Inc.In Stock: 5800LTC4307IMS8 Datasheet

Current PartRFQ

LTC4307IMS8#PBF

Analog Devices Inc.In Stock: 1272LTC4307IMS8#PBF Datasheet

DirectRFQ

LTC4307IMS8-1#PBF

Analog Devices Inc.In Stock: 4719LTC4307IMS8-1#PBF Datasheet

Parametric EquivalentRFQ

ISL33001IUZ

Renesas Electronics CorporationIn Stock: 1412ISL33001IUZ Datasheet

DirectRFQ

ISL33002IUZ

Renesas Electronics CorporationIn Stock: 1551ISL33002IUZ Datasheet

DirectRFQ

ISL33003IUZ

Renesas Electronics CorporationIn Stock: 6709ISL33003IUZ Datasheet

DirectRFQ

ISL33003IUZ-T

Renesas Electronics CorporationIn Stock: 3392ISL33003IUZ-T Datasheet

DirectRFQ

ISL33001IRT2Z

Renesas Electronics CorporationIn Stock: 9012ISL33001IRT2Z Datasheet

SimilarRFQ

ISL33001IRTZ

Renesas Electronics CorporationIn Stock: 9088ISL33001IRTZ Datasheet

SimilarRFQ

ISL33002IRT2Z

Renesas Electronics CorporationIn Stock: 820ISL33002IRT2Z Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTC4307IMS8 is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

• Type: Buffer, Accelerator
• Application: I2C - Hotswap
• Number of Channels: 2
• Input/Output Configuration: 2-Wire Bus
• Voltage Supply Range: 2.3V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Capacitance - Input: 10 pF
• RoHS Status: ROHS3 Compliant

Grouping Logic:

Group 1 - Direct Equivalents (Identical Package: 8-MSOP): Parts that maintain the exact same 8-MSOP package format with all electrical parameters matching or exceeding the main part specifications. These include LTC4307IMS8#PBF (Tube packaging variant) and LTC4307IMS8-1#PBF (parametric equivalent with Tube packaging).

Group 2 - Functional Equivalents (8-MSOP Package): Renesas Electronics Corporation ISL series parts (ISL33001IUZ, ISL33002IUZ, ISL33003IUZ, ISL33003IUZ-T) that maintain the 8-MSOP package footprint and meet all core electrical and mechanical requirements. These parts differ in supply current specifications but remain within acceptable operating parameters for I2C hotswap applications.

Group 3 - Package Variants (8-TDFN Alternative): Renesas Electronics Corporation ISL series parts in 8-TDFN (3x3) package format (ISL33001IRT2Z, ISL33001IRTZ, ISL33002IRT2Z) that provide functional equivalence with alternative surface mount packaging. These parts have different moisture sensitivity levels (MSL 3 vs. MSL 1) due to package construction differences.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Footprint and Specifications):

The LTC4307IMS8#PBF and LTC4307IMS8-1#PBF are direct substitutes from Analog Devices Inc. Both maintain identical electrical specifications, the same 8-MSOP package footprint, and equivalent compliance certifications (ROHS3, MSL 1). Selection between these variants depends on packaging format requirements: standard tube packaging versus alternative tube variants. Both are Active status products suitable for immediate substitution.

For Functional Equivalence with 8-MSOP Package:

The Renesas Electronics ISL33001IUZ, ISL33002IUZ, ISL33003IUZ, and ISL33003IUZ-T parts provide functional equivalence within the same 8-MSOP package envelope. All maintain the required 2.3V to 5.5V supply voltage range, -40°C to 85°C operating temperature, 2-channel configuration, and ROHS3 compliance. These parts feature reduced supply current specifications (3mA to 4mA versus 8mA), which represents an advantage in power-constrained applications. All are Active status products. The ISL33003IUZ-T variant offers Tape & Reel packaging for high-volume manufacturing processes, while ISL33003IUZ, ISL33001IUZ, and ISL33002IUZ are supplied in Tube packaging.

For Alternative Package Format (8-TDFN):

The Renesas Electronics ISL33001IRT2Z, ISL33001IRTZ, and ISL33002IRT2Z parts provide functional equivalence in an 8-TDFN (3x3) surface mount package. These alternatives are suitable when board layout constraints or manufacturing processes require a smaller footprint package. All maintain the required voltage supply range, operating temperature, and ROHS3 compliance. The moisture sensitivity level differs (MSL 3 versus MSL 1 for the main part), which affects storage and handling requirements. All are Active status products.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original LTC4307IMS8. All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can I substitute an ISL33003IUZ for the LTC4307IMS8 in my I2C hotswap application?

A: Yes. The ISL33003IUZ maintains the same 2-channel buffer accelerator functionality, 8-MSOP package footprint, 2.3V to 5.5V supply voltage range, -40°C to 85°C operating temperature, and ROHS3 compliance. The primary difference is reduced supply current (4mA versus 8mA), which is advantageous for power efficiency. Both are Active status products suitable for direct substitution.

Q: What is the difference between ISL33003IUZ and ISL33003IUZ-T?

A: Both parts are electrically identical Renesas Electronics ISL33003 buffer accelerators in the 8-MSOP package. The difference is packaging format: ISL33003IUZ is supplied in Tube packaging, while ISL33003IUZ-T is supplied in Tape & Reel (TR) format. Selection depends on manufacturing process requirements. Tape & Reel format is typically used for automated high-volume assembly operations.

Q: Can I use an ISL33001IRT2Z instead of the LTC4307IMS8?

A: The ISL33001IRT2Z provides functional equivalence for I2C hotswap applications with 2-channel buffer acceleration, 2.3V to 5.5V supply voltage, and -40°C to 85°C operating temperature. However, the package format differs: ISL33001IRT2Z uses 8-TDFN (3x3) instead of 8-MSOP. This requires PCB layout modification and different land pattern design. Additionally, the moisture sensitivity level is MSL 3 (168 Hours) versus MSL 1 (Unlimited), affecting storage and handling procedures. Use this substitute only when board layout constraints require the smaller TDFN package.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original LTC4307IMS8 across all applicable markets and applications.

Q: What is the significance of the supply current difference between LTC4307IMS8 (8mA) and ISL33002IUZ (3mA)?

A: The ISL33002IUZ operates at lower maximum supply current (3mA) compared to the LTC4307IMS8 (8mA). This represents improved power efficiency and reduced thermal dissipation. Both parts meet the same I2C hotswap application requirements. The lower current specification of the ISL33002IUZ is advantageous in battery-powered or power-constrained systems.

Q: Why do the ISL33001IRT2Z and ISL33001IRTZ have different moisture sensitivity levels than the main part?

A: The ISL33001IRT2Z and ISL33001IRTZ use 8-TDFN (3x3) package construction, which results in MSL 3 (168 Hours) moisture sensitivity versus MSL 1 (Unlimited) for the 8-MSOP packaged parts. This affects storage conditions and bake-out requirements before soldering. TDFN packages require more stringent moisture control during storage and handling compared to MSOP packages.

Q: Can I mix different substitute parts in the same design?

A: All listed substitute parts maintain compatible electrical specifications for I2C hotswap applications. However, mixing different package formats (8-MSOP versus 8-TDFN) within the same PCB design requires separate land pattern designs and layout considerations. Mixing different manufacturers (Analog Devices versus Renesas) is acceptable from an electrical standpoint, provided all parts meet the specified voltage, current, temperature, and functional requirements.

Q: What inventory considerations should I account for when selecting a substitute?

A: Inventory availability varies across substitute parts. The LTC4307IMS8 has 5,780 pieces in stock, while alternatives range from 800 to 8,989 pieces. ISL33003IUZ-T offers the highest availability at 3,358 pieces in Tape & Reel format, suitable for high-volume production. ISL33002IRT2Z has the lowest availability at 800 pieces. Consider lead time and volume requirements when selecting between available alternatives.