ISO7761FDBQR Equivalent & Substitute Parts

Part Overview

The ISO7761FDBQR is a General Purpose Digital Isolator manufactured by Texas Instruments, part of the ISO776x series. This device provides 3000Vrms isolation across 6 channels with 100Mbps data rate capability and 85kV/µs common mode transient immunity. The component is designed for applications requiring galvanic isolation in industrial, automotive, and communication systems. As an active product with ROHS3 compliance and established supply availability, equivalent parts are identified to support procurement flexibility and design continuity.

Substiute Parts

ISO7761FDBQR

Texas InstrumentsIn Stock: 3246ISO7761FDBQR Datasheet

Current PartRFQ

ISO7761DBQR

Texas InstrumentsIn Stock: 1574ISO7761DBQR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISO7761FDBQR is determined by strict equivalence across the following critical parameters:

• Number of Channels: 6
• Voltage - Isolation: 3000Vrms
• Data Rate: 100Mbps
• Common Mode Transient Immunity: 85kV/µs
• Package / Case: 16-SSOP (0.154", 3.90mm Width)
• Voltage - Supply Range: 2.25V ~ 5.5V
• Operating Temperature Range: -55°C ~ 125°C
• Technology: Capacitive Coupling
• Mounting Type: Surface Mount

The ISO7761DBQR meets all substitution criteria as a parametric equivalent within the ISO776x series. Both parts share identical electrical specifications, isolation ratings, channel configuration, and physical packaging requirements. The distinction between these parts is limited to packaging format (Cut Tape vs. alternative reel configuration), which does not affect functional or electrical compatibility in circuit design.

Parameter Comparison

Engineering Selection Recommendations

Both the ISO7761FDBQR and ISO7761DBQR are active products with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. Selection between these parts should be based on procurement requirements and packaging format availability rather than electrical or functional differences.

The ISO7761FDBQR is available in Cut Tape (CT) & Digi-Reel® packaging with 3142 units in stock. The ISO7761DBQR is available in the same packaging format with 1500 units in stock. Both parts maintain identical electrical performance, isolation characteristics, and thermal operating ranges, ensuring direct substitution capability in circuit applications without design modification.

Frequently Asked Questions (FAQ)

Q: Can ISO7761DBQR replace ISO7761FDBQR in existing designs?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, isolation ratings, channel configuration, propagation delay, and package dimensions. Direct substitution is supported without circuit redesign.

Q: Are there differences in isolation voltage or data rate between these parts?

A: No. Both parts provide 3000Vrms isolation and 100Mbps data rate with 85kV/µs common mode transient immunity. All critical electrical parameters are identical.

Q: What is the difference between ISO7761FDBQR and ISO7761DBQR?

A: The parts differ only in packaging format designation within the Cut Tape & Digi-Reel® product line. Electrical performance, pin configuration, and physical package dimensions are identical.

Q: Are both parts suitable for -55°C to 125°C operating temperature applications?

A: Yes. Both ISO7761FDBQR and ISO7761DBQR support the full -55°C to 125°C operating temperature range.

Q: Do both parts meet RoHS and REACH compliance requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for industrial and commercial applications.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical 16-SSOP surface mount packaging with 0.154" width and 3.90mm dimensions, supporting direct PCB layout compatibility.