ISO7721DWVR Equivalent & Substitute Parts

Part Overview

The ISO7721DWVR is a general purpose digital isolator manufactured by Texas Instruments, featuring 5000Vrms isolation voltage and 2-channel unidirectional configuration. This component is designed for applications requiring galvanic isolation with high common mode transient immunity and fast data transmission at 100Mbps. The part maintains Active product status and is ROHS3 compliant, making it suitable for modern industrial and consumer applications. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, design flexibility, or supply chain considerations.

Substiute Parts

ISO7721DWVR

Texas InstrumentsIn Stock: 3223ISO7721DWVR Datasheet

Current PartRFQ

ISO7721FDWVR

Texas InstrumentsIn Stock: 8451ISO7721FDWVR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISO7721DWVR is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating of 5000Vrms
• 2-channel unidirectional configuration
• 100Mbps data rate capability
• Common mode transient immunity of 85kV/µs minimum
• Propagation delay specifications of 16ns maximum for both tpLH and tpHL
• Supply voltage range of 2.25V to 5.5V
• Operating temperature range of -55°C to 125°C
• 8-SOIC surface mount package with identical physical dimensions
• Capacitive coupling technology
• Active product status
• ROHS3 compliance

The ISO7721FDWVR meets all specified electrical and mechanical parameters, qualifying it as a parametric equivalent for direct substitution in applications utilizing the ISO7721DWVR.

Parameter Comparison

Engineering Selection Recommendations

Both the ISO7721DWVR and ISO7721FDWVR are Active products manufactured by Texas Instruments with identical electrical and mechanical specifications. Both components maintain ROHS3 compliance and equivalent moisture sensitivity ratings. Selection between these parts may be based on inventory availability, packaging format (Cut Tape vs. Digi-Reel), or supply chain logistics, as no technical differentiation exists between the two part numbers. The ISO7721FDWVR currently maintains higher inventory levels at 8400 pieces compared to 3180 pieces for the ISO7721DWVR.

Frequently Asked Questions (FAQ)

Q: Can ISO7721FDWVR be used as a direct replacement for ISO7721DWVR?

A: Yes. The ISO7721FDWVR is a parametric equivalent with identical electrical specifications, isolation voltage, channel configuration, data rate, timing characteristics, supply voltage range, operating temperature range, and package dimensions. Direct substitution is supported without circuit modification.

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

A: No. Both parts provide 5000Vrms isolation voltage and 85kV/µs common mode transient immunity. Propagation delay, pulse width distortion, and rise/fall time specifications are identical.

Q: What is the difference between the part numbers ISO7721DWVR and ISO7721FDWVR?

A: The part numbers differ in their suffix designation, which typically indicates packaging or manufacturing date code variations. All electrical and mechanical parameters remain equivalent.

Q: Are both parts suitable for the same PCB layout and thermal requirements?

A: Yes. Both components use the 8-SOIC surface mount package with identical physical dimensions (0.295" × 7.50mm width), requiring no PCB layout modifications. Thermal characteristics and mounting considerations are equivalent.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ISO7721DWVR and ISO7721FDWVR are ROHS3 compliant with identical moisture sensitivity levels (MSL 2, 1 Year) and REACH unaffected status.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection may be based on current inventory availability or preferred packaging format. Both maintain Active product status with equivalent long-term support from Texas Instruments.