ISO722MDRG4 Equivalent & Substitute Parts

Part Overview

The ISO722MDRG4 is a general purpose digital isolator manufactured by Texas Instruments, featuring 2500Vrms isolation voltage, single channel unidirectional operation, and 150Mbps data rate in an 8-SOIC package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility within system designs. Substitute parts are selected based on matching or exceeding critical electrical parameters including isolation voltage, data rate, common mode transient immunity, and package form factor.

Substiute Parts

ISO722MDRG4

Texas InstrumentsIn Stock: 698ISO722MDRG4 Datasheet

Current PartRFQ

ISO722MDR

Texas InstrumentsIn Stock: 2883ISO722MDR Datasheet

MFR RecommendedRFQ

ISO721MDR

Texas InstrumentsIn Stock: 5500ISO721MDR Datasheet

Parametric EquivalentRFQ

SI8610BB-B-IS

Skyworks Solutions Inc.In Stock: 15412SI8610BB-B-IS Datasheet

MFR RecommendedRFQ

SI8710CD-B-ISR

Skyworks Solutions Inc.In Stock: 8568SI8710CD-B-ISR Datasheet

MFR RecommendedRFQ

SI8715BC-A-IS

Skyworks Solutions Inc.In Stock: 5337SI8715BC-A-IS Datasheet

MFR RecommendedRFQ

SI8717BC-A-IS

Skyworks Solutions Inc.In Stock: 901SI8717BC-A-IS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISO722MDRG4 are classified into two categories based on substitution criteria:

Category 1: Direct Manufacturer Equivalents (Texas Instruments)

• ISO722MDR and ISO721MDR maintain identical isolation voltage (2500Vrms), channel configuration, and 8-SOIC package form factor
• These parts differ only in packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Discontinued)
• Electrical performance parameters remain equivalent across all three variants

Category 2: Cross-Manufacturer Substitutes (Skyworks Solutions Inc.)

• SI8610BB-B-IS, SI8715BC-A-IS, and SI8717BC-A-IS provide functional substitution with modified electrical characteristics
• SI8710CD-B-ISR operates at higher isolation voltage (5000Vrms) with reduced data rate (1Mbps) and different package (6-SOIC)
• Substitution validity depends on application tolerance for parameter variations in isolation voltage, data rate, propagation delay, and common mode transient immunity

Key Parameters Determining Substitution:

• Isolation voltage rating (minimum 2500Vrms required)
• Data rate capability (minimum 150Mbps for direct equivalence)
• Package compatibility (8-SOIC preferred; 6-SOIC acceptable with PCB redesign)
• Common mode transient immunity (25kV/µs minimum)
• Supply voltage range (3V ~ 5.5V compatibility)
• Operating temperature range (-40°C ~ 125°C)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ISO722MDR ISO722MDR is the manufacturer-recommended direct equivalent, maintaining all electrical specifications of the ISO722MDRG4 while offering active product status and higher inventory availability (2838 pcs). This part is suitable for direct substitution without circuit modification. Packaging format differs (Tape & Reel vs. Digi-Reel), but electrical performance is identical.

Secondary Recommendation: ISO721MDR ISO721MDR provides parametric equivalence with identical electrical characteristics and active product status. Higher inventory (5400 pcs) supports supply chain continuity. Packaging format (Cut Tape & Digi-Reel) differs from the original part. This option is suitable when ISO722MDR availability is constrained.

Cross-Manufacturer Option: SI8610BB-B-IS SI8610BB-B-IS (Skyworks Solutions) maintains 2500Vrms isolation voltage and 150Mbps data rate with improved propagation delay (13ns vs. 16ns) and higher common mode transient immunity (35kV/µs vs. 25kV/µs). Supply voltage range extends to 2.5V minimum. Moisture sensitivity level increases to 2A (4 Weeks), requiring controlled storage conditions. Package form factor remains 8-SOIC. This option is suitable for applications requiring enhanced transient immunity.

Limited Substitution: SI8715BC-A-IS and SI8717BC-A-IS These parts reduce isolation voltage to 3750Vrms and data rate to 15Mbps, suitable only for applications with reduced bandwidth requirements and higher isolation margin tolerance. Package remains 8-SOIC. Moisture sensitivity increases to 3 (168 Hours).

Not Recommended: SI8710CD-B-ISR This part operates at 5000Vrms isolation with 1Mbps data rate and 6-SOIC package, requiring significant circuit redesign. Substitution is valid only for low-speed applications with higher isolation requirements.

Frequently Asked Questions (FAQ)

Q: Can ISO722MDR directly replace ISO722MDRG4 without circuit modification? A: Yes. ISO722MDR is the manufacturer-recommended equivalent with identical electrical specifications. Only packaging format differs (Tape & Reel vs. Digi-Reel), which does not affect circuit performance.

Q: What is the difference between ISO722MDR and ISO721MDR? A: Both parts maintain identical electrical specifications (2500Vrms isolation, 150Mbps data rate, 16ns propagation delay). The primary difference is packaging format and inventory availability. ISO721MDR uses Cut Tape & Digi-Reel packaging and has higher stock (5400 pcs vs. 2838 pcs).

Q: Can SI8610BB-B-IS replace ISO722MDRG4? A: SI8610BB-B-IS is a functional substitute maintaining 2500Vrms isolation and 150Mbps data rate. It offers improved propagation delay (13ns vs. 16ns) and higher common mode transient immunity (35kV/µs vs. 25kV/µs). However, moisture sensitivity increases to 2A (4 Weeks), requiring controlled storage. Package remains 8-SOIC, allowing direct PCB substitution.

Q: Why is SI8710CD-B-ISR listed as a substitute if it has different specifications? A: SI8710CD-B-ISR is included as a cross-manufacturer option for applications where higher isolation voltage (5000Vrms) is beneficial and reduced data rate (1Mbps) is acceptable. This part requires PCB redesign due to 6-SOIC package form factor.

Q: What does Moisture Sensitivity Level (MSL) mean for component selection? A: MSL indicates maximum storage time at specified humidity before component degradation. ISO722MDRG4 has MSL 1 (Unlimited), while Skyworks substitutes have MSL 2A or 3, requiring controlled storage conditions and shorter shelf life management.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental certification of ISO722MDRG4.

Q: Can I use SI8715BC-A-IS or SI8717BC-A-IS as direct replacements? A: These parts are functional substitutes only for applications tolerating reduced data rate (15Mbps vs. 150Mbps) and lower isolation voltage (3750Vrms vs. 2500Vrms). They are not suitable for high-speed applications requiring 150Mbps operation.

Q: What is the primary advantage of SI8610BB-B-IS over ISO722MDR? A: SI8610BB-B-IS offers faster propagation delay (13ns vs. 16ns) and higher common mode transient immunity (35kV/µs vs. 25kV/µs), beneficial for applications with stringent timing requirements or high-speed switching environments. However, it requires controlled moisture storage.