ISO7840DWWR Equivalent & Substitute Parts

Part Overview

The ISO7840DWWR is a General Purpose Digital Isolator manufactured by Texas Instruments, featuring 5700Vrms isolation voltage and 4 channels with 100Mbps data rate capability. This device utilizes capacitive coupling technology and is rated for operating temperatures from -55°C to 125°C. The part is currently in Active product status with ROHS3 compliance and is available in 16-SOIC surface mount packaging. Alternative models are identified to address specific application requirements such as channel count variations or packaging format preferences while maintaining core electrical and mechanical compatibility.

Substiute Parts

ISO7840DWWR

Texas InstrumentsIn Stock: 2993ISO7840DWWR Datasheet

Current PartRFQ

ISO7830DWWR

Texas InstrumentsIn Stock: 3990ISO7830DWWR Datasheet

Parametric EquivalentRFQ

ISO7840FDWWR

Texas InstrumentsIn Stock: 60259ISO7840FDWWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISO7840DWWR are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Manufacturer: Texas Instruments
• Technology: Capacitive Coupling
• Type: General Purpose Digital Isolator
• Voltage - Isolation: 5700Vrms
• Common Mode Transient Immunity: 100kV/µs
• Data Rate: 100Mbps
• Package / Case: 16-SOIC (0.551", 14.00mm Width)
• Voltage - Supply: 2.25V ~ 5.5V
• Operating Temperature: -55°C ~ 125°C
• RoHS Status: ROHS3 Compliant
• Mounting Type: Surface Mount

Identified Substitutes:

The ISO7830DWWR is a parametric equivalent with identical electrical specifications except for channel count (3 channels versus 4 channels). This part maintains all isolation, timing, and supply voltage parameters while differing only in the number of isolated channels.

The ISO7840FDWWR is a direct parametric equivalent with identical channel count (4 channels) and all electrical specifications. The primary distinction is packaging format: Cut Tape (CT) & Digi-Reel® versus alternative tape and reel configurations.

Parameter Comparison

Engineering Selection Recommendations

ISO7840DWWR (Primary Part): Select this part for applications requiring 4-channel digital isolation with 5700Vrms isolation voltage. Active product status ensures ongoing manufacturer support and availability. ROHS3 compliance and MSL 2 rating support standard manufacturing and storage conditions.

ISO7840FDWWR (Direct Equivalent): This part is electrically and functionally identical to the ISO7840DWWR with matching 4-channel configuration and all electrical parameters. Selection between these two parts depends on packaging format requirements and supply chain availability. Both maintain Active product status and identical compliance certifications.

ISO7830DWWR (Channel-Reduced Alternative): This part is suitable only for applications requiring 3-channel isolation instead of 4 channels. All other electrical specifications, isolation voltage, data rate, timing parameters, and compliance certifications remain identical to the main part. This option is appropriate only when circuit design accommodates the reduced channel count.

Frequently Asked Questions (FAQ)

Q: Can ISO7830DWWR replace ISO7840DWWR in all applications?

A: No. The ISO7830DWWR provides 3 isolated channels while the ISO7840DWWR provides 4 channels. Substitution is only valid for applications that require 3 or fewer isolated channels. Circuit redesign may be necessary if the original design utilizes all 4 channels.

Q: What is the difference between ISO7840DWWR and ISO7840FDWWR?

A: Both parts are electrically identical with 4 channels, 5700Vrms isolation, 100Mbps data rate, and identical timing specifications. The primary difference is packaging format: ISO7840DWWR uses Cut Tape (CT) & Digi-Reel® while ISO7840FDWWR uses Tape & Reel (TR). Selection depends on manufacturing equipment compatibility and supply requirements.

Q: Are all three parts pin-compatible?

A: ISO7840DWWR and ISO7840FDWWR are pin-compatible as both feature 4 channels in 16-SOIC packaging. ISO7830DWWR has 3 channels and uses the same 16-SOIC package but with different pin assignments for the reduced channel count. PCB layout verification is required before substitution.

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

A: Yes. All three parts are ROHS3 compliant, carry MSL 2 (1 Year) moisture sensitivity rating, and maintain Active product status from Texas Instruments. REACH and ECCN classifications are identical across all parts.

Q: What are the key electrical parameters that remain constant across all substitutes?

A: Isolation voltage (5700Vrms), common mode transient immunity (100kV/µs), data rate (100Mbps), propagation delay (16ns max for both tpLH and tpHL), supply voltage range (2.25V ~ 5.5V), and operating temperature range (-55°C ~ 125°C) are identical across all parts.