ISO7820FDWW Equivalent & Substitute Parts

Part Overview

The ISO7820FDWW is a General Purpose Digital Isolator manufactured by Texas Instruments, featuring 5700Vrms isolation voltage and 2 channels with unidirectional input configuration. This device utilizes capacitive coupling technology and operates across a supply voltage range of 2.25V to 5.5V with an operating temperature range of -55°C to 125°C. The part is Active in product status and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility while maintaining circuit performance specifications.

Substiute Parts

ISO7820FDWW

Texas InstrumentsIn Stock: 718ISO7820FDWW Datasheet

Current PartRFQ

ISO7810DWW

Texas InstrumentsIn Stock: 1028ISO7810DWW Datasheet

Parametric EquivalentRFQ

ISO7820DWW

Texas InstrumentsIn Stock: 806ISO7820DWW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISO7820FDWW are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Voltage - Isolation: 5700Vrms
• Common Mode Transient Immunity (Min): 100kV/µs
• Data Rate: 100Mbps
• Propagation Delay tpLH / tpHL (Max): 16ns / 16ns
• Voltage - Supply: 2.25V ~ 5.5V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 16-SOIC (0.551", 14.00mm Width)
• Technology: Capacitive Coupling
• Product Status: Active

Secondary Consideration:

• Number of Channels: The ISO7820FDWW features 2 channels. The ISO7810DWW provides 1 channel and is listed as a parametric equivalent where channel count reduction is acceptable for the application.

All substitute parts maintain identical electrical performance specifications, compliance certifications (ROHS3, REACH Unaffected), and moisture sensitivity levels (MSL 3, 168 Hours).

Parameter Comparison

Engineering Selection Recommendations

ISO7820DWW: This part is a direct functional equivalent to the ISO7820FDWW. Both devices share identical channel configuration (2 channels), electrical specifications, and package form factor. Selection between these parts is determined by inventory availability and supplier lead time, as all performance parameters and compliance certifications are equivalent.

ISO7810DWW: This part provides a single-channel alternative to the ISO7820FDWW. All electrical performance parameters, isolation voltage, data rate, propagation delay, and supply voltage specifications remain identical. This substitute is applicable only when circuit design requires a single isolated channel, reducing the number of channels from 2 to 1. All parts maintain Active product status and identical compliance certifications (ROHS3, REACH Unaffected, MSL 3).

Frequently Asked Questions (FAQ)

Q: Can ISO7820DWW be used as a direct replacement for ISO7820FDWW?

A: Yes. Both parts are 2-channel General Purpose Digital Isolators with identical electrical specifications, isolation voltage (5700Vrms), data rate (100Mbps), propagation delay (16ns), supply voltage range (2.25V ~ 5.5V), operating temperature range (-55°C ~ 125°C), and 16-SOIC package configuration. All compliance certifications and performance parameters are equivalent.

Q: When is ISO7810DWW suitable as a substitute?

A: ISO7810DWW is suitable when the application requires only a single isolated channel instead of two channels. All other electrical specifications—isolation voltage, CMTI, data rate, propagation delay, supply voltage, operating temperature, and package—remain identical to the ISO7820FDWW. Circuit design must accommodate the reduced channel count.

Q: Are all three parts pin-compatible?

A: ISO7820FDWW and ISO7820DWW share identical 16-SOIC package dimensions and pin configuration. ISO7810DWW uses the same 16-SOIC package but with a different pin assignment due to single-channel configuration. PCB layout and schematic modifications are required when substituting with ISO7810DWW.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. ISO7820FDWW, ISO7820DWW, and ISO7810DWW are all ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 3, 168 Hours). All parts are Active in product status.

Q: What is the primary difference between these parts?

A: The primary difference is channel count. ISO7820FDWW and ISO7820DWW provide 2 isolated channels, while ISO7810DWW provides 1 isolated channel. All other specifications—isolation performance, data rate, timing characteristics, and environmental ratings—are identical across all three parts.