ISO7041DBQR SPI Digital Isolator Equivalent & Substitute Parts

Part Overview

The ISO7041DBQR is an active SPI digital isolator manufactured by Texas Instruments, designed to provide galvanic isolation in serial peripheral interface applications. This device delivers 3000Vrms isolation voltage with 4-channel configuration, supporting data rates up to 2Mbps and common mode transient immunity of 50kV/µs. The component is housed in a 16-SSOP surface mount package and operates across the industrial temperature range of -55°C to 125°C. As an active product with ROHS3 compliance and REACH unaffected status, the ISO7041DBQR remains in full production. Substitute parts are identified when inventory constraints, lead time requirements, or supply chain considerations necessitate alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

ISO7041DBQR

Texas InstrumentsIn Stock: 3462ISO7041DBQR Datasheet

Current PartRFQ

ISO7041FDBQR

Texas InstrumentsIn Stock: 267990ISO7041FDBQR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISO7041DBQR are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

Electrical Specifications:

• Isolation voltage: 3000Vrms
• Number of channels: 4
• Channel configuration: 3 inputs on Side 1, 1 input on Side 2
• Channel type: Unidirectional
• Data rate: 2Mbps
• Common mode transient immunity: 50kV/µs minimum
• Propagation delay: 165ns maximum (both tpLH and tpHL)
• Pulse width distortion: 10ns maximum
• Supply voltage ranges: 1.71V ~ 1.89V and 2.25V ~ 5.5V
• Operating temperature range: -55°C to 125°C

Mechanical Specifications:

• Package type: 16-SSOP (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Supplier device package: 16-SSOP

Compliance & Status:

• Manufacturer: Texas Instruments
• Technology: Capacitive Coupling
• Type: SPI
• Product status: Active
• RoHS status: ROHS3 Compliant
• REACH status: REACH Unaffected

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The ISO7041FDBQR is a direct parametric equivalent to the ISO7041DBQR. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. Selection between these parts is based on availability and supply chain considerations rather than functional differences.

Both parts maintain active product status with Texas Instruments, ensuring continued manufacturing support and documentation availability. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for industrial and commercial applications.

The ISO7041FDBQR offers significantly higher inventory availability (267,902 pieces) compared to the ISO7041DBQR (3,400 pieces), making it the preferred choice for applications where lead time and supply continuity are critical factors. The identical parametric specifications ensure drop-in compatibility in all circuit applications designed for the ISO7041DBQR.

Frequently Asked Questions (FAQ)

Q: Can the ISO7041FDBQR be used as a direct replacement for the ISO7041DBQR?

A: Yes. The ISO7041FDBQR is a parametric equivalent with identical electrical specifications, isolation voltage, channel configuration, data rate, timing characteristics, supply voltage ranges, operating temperature range, and package type. No circuit modifications are required.

Q: Are there any differences in the isolation performance between these parts?

A: No. Both parts deliver 3000Vrms isolation voltage with 50kV/µs common mode transient immunity. Propagation delay, pulse width distortion, and rise/fall time specifications are identical.

Q: Do both parts use the same package and mounting type?

A: Yes. Both the ISO7041DBQR and ISO7041FDBQR are housed in 16-SSOP (0.154", 3.90mm Width) surface mount packages. PCB layout and assembly processes remain unchanged.

Q: Are the supply voltage requirements the same?

A: Yes. Both parts operate with dual supply voltage ranges: 1.71V ~ 1.89V and 2.25V ~ 5.5V. Power supply design and decoupling requirements are identical.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 125°C, covering industrial temperature specifications.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the ISO7041DBQR and ISO7041FDBQR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these components?

A: Both parts have MSL 2 rating with a 1-year floor life, requiring standard moisture control during storage and handling.

Q: Is the SPI data rate identical between both parts?

A: Yes. Both parts support 2Mbps data rate with identical timing characteristics for SPI communication.