ISO7820FDWR Digital Isolator - Equivalent & Substitute Parts

Part Overview

The ISO7820FDWR is a general purpose digital isolator manufactured by Texas Instruments, featuring 5700Vrms isolation voltage and 2-channel unidirectional isolation capability. This active product operates at 100Mbps data rate with 100kV/µs common mode transient immunity in a 16-SOIC surface mount package. The part is ROHS3 compliant and maintains MSL 2 moisture sensitivity rating.

Substitute parts are identified when design requirements allow reduction in channel count or when inventory constraints necessitate alternative sourcing while maintaining critical electrical and mechanical compatibility.

Substiute Parts

ISO7820FDWR

Texas InstrumentsIn Stock: 3239ISO7820FDWR Datasheet

Current PartRFQ

ISO7810DWR

Texas InstrumentsIn Stock: 1498ISO7810DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ISO7810DWR qualifies as a parametric equivalent based on the following substitution criteria:

Matching Parameters (Substitution Basis):

• Isolation voltage: 5700Vrms (identical)
• Common mode transient immunity: 100kV/µs (identical)
• Data rate: 100Mbps (identical)
• Supply voltage range: 2.25V ~ 5.5V (identical)
• Operating temperature range: -55°C ~ 125°C (identical)
• Package / Case: 16-SOIC (0.295", 7.50mm Width) (identical)
• Mounting type: Surface Mount (identical)
• Technology: Capacitive Coupling (identical)
• Propagation delay: 16ns max (identical)
• Pulse width distortion: 4.6ns max (identical)
• Rise / Fall time: 2.4ns typical (identical)
• RoHS Status: ROHS3 Compliant (identical)
• MSL Rating: 2 (1 Year) (identical)

Differing Parameter (Design Consideration):

• Number of channels: ISO7820FDWR provides 2 channels; ISO7810DWR provides 1 channel

Substitution is valid only when application requirements permit single-channel isolation instead of dual-channel isolation.

Parameter Comparison

Engineering Selection Recommendations

Both ISO7820FDWR and ISO7810DWR maintain active product status with identical ROHS3 compliance and REACH unaffected certifications, ensuring regulatory alignment for current and future applications.

Selection between these parts depends solely on channel count requirements. The ISO7820FDWR is specified for applications requiring dual-channel isolation. The ISO7810DWR is suitable only when single-channel isolation satisfies the design specification. Both parts share identical electrical performance characteristics, supply voltage compatibility, temperature operating range, and package footprint, enabling direct PCB layout compatibility when channel count reduction is acceptable.

Frequently Asked Questions (FAQ)

Q: Can ISO7810DWR replace ISO7820FDWR in all applications?

A: No. ISO7810DWR provides 1 isolation channel while ISO7820FDWR provides 2 channels. Substitution is valid only when the application requires single-channel isolation. If the design requires dual-channel isolation, ISO7810DWR is not suitable.

Q: Are the electrical performance specifications identical between these parts?

A: Yes. Both parts share identical isolation voltage (5700Vrms), common mode transient immunity (100kV/µs), data rate (100Mbps), propagation delay (16ns max), pulse width distortion (4.6ns max), supply voltage range (2.25V ~ 5.5V), and operating temperature range (-55°C ~ 125°C).

Q: Is the package footprint identical?

A: Yes. Both parts use 16-SOIC (0.295", 7.50mm Width) surface mount packaging, enabling identical PCB layout and assembly compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ISO7820FDWR and ISO7810DWR are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification with identical HTSUS coding (8542.39.0001).

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

A: Both parts carry MSL 2 (1 Year) moisture sensitivity rating, requiring identical handling and storage protocols.

Q: Are both parts currently in active production?

A: Yes. Both ISO7820FDWR and ISO7810DWR maintain active product status from Texas Instruments.