ISO7761DBQR Equivalent & Substitute Parts

Part Overview

The ISO7761DBQR is a general purpose digital isolator manufactured by Texas Instruments, designed for applications requiring galvanic isolation with high common mode transient immunity. This capacitive coupling technology isolator operates at 3000Vrms isolation voltage and supports 6 channels with a maximum data rate of 100Mbps. The device is housed in a 16-SSOP surface mount package and is currently in active production status. Substitute parts are identified when equivalent electrical and mechanical specifications are required for design flexibility, inventory management, or supply chain optimization.

Substiute Parts

ISO7761DBQR

Texas InstrumentsIn Stock: 1574ISO7761DBQR Datasheet

Current PartRFQ

ISO7761FDBQR

Texas InstrumentsIn Stock: 3246ISO7761FDBQR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISO7761DBQR is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part ISO7761FDBQR maintains identical specifications in the following key areas:

• Number of channels: 6 channels with 5/1 input configuration
• Isolation voltage: 3000Vrms
• Common mode transient immunity: 85kV/µs minimum
• Data rate: 100Mbps
• Propagation delay: 16ns maximum for both rising and falling edges
• Pulse width distortion: 4.9ns maximum
• Supply voltage range: 2.25V to 5.5V
• Operating temperature range: -55°C to 125°C
• Package: 16-SSOP surface mount with identical physical dimensions
• Technology: Capacitive coupling
• Compliance: ROHS3 compliant, REACH unaffected

Both parts belong to the ISO776x series and share identical functional and mechanical characteristics, enabling direct substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the ISO7761DBQR and ISO7761FDBQR are active production devices from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain considerations rather than functional differences. Both devices meet ROHS3 compliance requirements and REACH regulations, making them suitable for applications with environmental and regulatory compliance mandates. The 16-SSOP package format ensures compatibility with standard surface mount assembly processes. Moisture sensitivity level 2 with a one-year shelf life requires standard handling and storage protocols consistent with industry practices for this classification.

Frequently Asked Questions (FAQ)

Q: Can ISO7761FDBQR be used as a direct replacement for ISO7761DBQR?

A: Yes. Both parts are parametrically equivalent across all electrical and mechanical specifications, including isolation voltage, channel configuration, data rate, timing characteristics, supply voltage range, operating temperature, and package format. Direct substitution is supported without circuit modification.

Q: Are there differences in the 16-SSOP package between these parts?

A: No. Both parts use identical 16-SSOP surface mount packages with 0.154" width and 3.90mm dimensions. PCB footprints and assembly processes are interchangeable.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ISO7761DBQR and ISO7761FDBQR are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements.

Q: What is the significance of the different part number suffixes?

A: The suffix variation (DBQR versus FDBQR) reflects different manufacturing or packaging designations within Texas Instruments' product line. All specified electrical and mechanical parameters remain identical.

Q: Are there any temperature or supply voltage limitations that differ between these parts?

A: No. Both parts operate across the identical temperature range of -55°C to 125°C and support the same supply voltage range of 2.25V to 5.5V.

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

A: Both parts are classified as MSL 2 with a one-year shelf life. Standard moisture control measures during storage and handling are required.