ISO7320CD Digital Isolator - Equivalent & Substitute Parts

Part Overview

The ISO7320CD is a general purpose digital isolator manufactured by Texas Instruments, designed for applications requiring galvanic isolation up to 3000Vrms with 2-channel unidirectional signal transmission. This Active product utilizes capacitive coupling technology to achieve 25Mbps data rates with 25kV/µs common mode transient immunity in an 8-SOIC surface mount package. Substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across the product line.

Substiute Parts

ISO7320CD

Texas InstrumentsIn Stock: 2562ISO7320CD Datasheet

Current PartRFQ

ISO7320FCD

Texas InstrumentsIn Stock: 2365ISO7320FCD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISO7320CD is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating: 3000Vrms
• Channel configuration: 2 channels, unidirectional
• Data rate: 25Mbps
• Common mode transient immunity: 25kV/µs minimum
• Supply voltage range: 3V ~ 5.5V
• Package type: 8-SOIC (0.154", 3.90mm Width)
• Technology platform: Capacitive coupling
• Operating temperature range: -40°C ~ 125°C

The ISO7320FCD meets all these criteria and is classified as a parametric equivalent. Both parts share identical base product number ISO7320 and maintain full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both ISO7320CD and ISO7320FCD are Active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. Selection between these parts may be based on inventory availability, lead time, or procurement preferences, as electrical performance and mechanical compatibility are identical. The ISO7320CD currently maintains 2460 units in stock, while ISO7320FCD has 2294 units available.

Frequently Asked Questions (FAQ)

Q: Can ISO7320FCD be used as a direct replacement for ISO7320CD?

A: Yes. Both parts are parametric equivalents with identical isolation voltage, channel configuration, data rate, timing specifications, supply voltage range, operating temperature, and 8-SOIC package dimensions. No circuit modifications are required.

Q: Are there any differences in RoHS or regulatory compliance between these parts?

A: No. Both ISO7320CD and ISO7320FCD carry ROHS3 compliance and REACH unaffected status, meeting the same regulatory requirements.

Q: What determines if a part can substitute for the ISO7320CD?

A: Substitution requires matching isolation voltage (3000Vrms), channel count (2), data rate (25Mbps), common mode transient immunity (25kV/µs), supply voltage range (3V ~ 5.5V), operating temperature (-40°C ~ 125°C), and package type (8-SOIC 0.154" width). All timing parameters must also align.

Q: Are there any package or pinout differences?

A: No. Both parts use the identical 8-SOIC (0.154", 3.90mm Width) package with the same pinout and mechanical footprint.

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

A: Both ISO7320CD and ISO7320FCD carry MSL 2 (1 Year) rating, indicating standard moisture handling requirements for surface mount components.