ISO7742FDW Digital Isolator - Equivalent & Substitute Parts

Part Overview

The ISO7742FDW is a general purpose digital isolator manufactured by Texas Instruments, designed for galvanic isolation applications requiring 5000Vrms isolation voltage. This active product utilizes capacitive coupling technology to provide 4-channel unidirectional isolation with 100Mbps data rate capability. The device is housed in a 16-SOIC surface mount package and operates across the industrial temperature range of -55°C to 125°C. Substitute parts are identified when electrical performance parameters, isolation specifications, and physical packaging remain identical across different packaging configurations or inventory sources.

Substiute Parts

ISO7742FDW

Texas InstrumentsIn Stock: 7245ISO7742FDW Datasheet

Current PartRFQ

ISO7742DW

Texas InstrumentsIn Stock: 58643ISO7742DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between ISO7742FDW and ISO7742DW is based on identical electrical and mechanical specifications. Both parts share the same base product number (ISO7742), isolation voltage (5000Vrms), channel configuration (4 channels, 2/2 input distribution), data rate (100Mbps), timing characteristics, supply voltage range, operating temperature range, and physical package dimensions (16-SOIC, 0.295" × 7.50mm). The primary distinction between these parts is packaging configuration: ISO7742FDW is supplied in standard packaging, while ISO7742DW is supplied in tube packaging. Both maintain identical RoHS3 compliance, MSL rating, and product status (Active). Substitution is valid when packaging format does not impose constraints on assembly or storage requirements.

Parameter Comparison

Engineering Selection Recommendations

Both ISO7742FDW and ISO7742DW are active products from Texas Instruments with identical electrical specifications and ROHS3 compliance certification. Selection between these parts should be based on packaging requirements and inventory availability. ISO7742DW offers higher inventory availability (58,570 pcs) compared to ISO7742FDW (7,230 pcs), making it suitable for high-volume production runs where tube packaging is acceptable. ISO7742FDW may be preferred when standard packaging format aligns with existing assembly line specifications. Both parts maintain equivalent MSL ratings and are suitable for industrial temperature range applications. Compliance certifications (ROHS3, REACH Unaffected, EAR99) are identical across both variants.

Frequently Asked Questions (FAQ)

Q: Are ISO7742FDW and ISO7742DW electrically identical? A: Yes. Both parts share identical electrical specifications including 5000Vrms isolation voltage, 4-channel configuration, 100Mbps data rate, 85kV/µs CMTI, and all timing parameters. Substitution is valid from an electrical performance standpoint.

Q: What is the difference between ISO7742FDW and ISO7742DW? A: The primary difference is packaging format. ISO7742FDW uses standard packaging while ISO7742DW is supplied in tube packaging. All electrical and mechanical specifications remain identical.

Q: Can ISO7742DW replace ISO7742FDW in production? A: Yes, provided that tube packaging is compatible with your assembly process and storage requirements. The 16-SOIC package dimensions are identical, and all electrical parameters match.

Q: Are there any compliance differences between these parts? A: No. Both parts maintain identical RoHS3 compliance, MSL rating (2, 1 Year), REACH status (Unaffected), and ECCN classification (EAR99).

Q: Which part should I select for new designs? A: Selection should be based on packaging preference and inventory availability. Both parts are active products with equivalent technical specifications and compliance certifications.

Q: Is the 16-SOIC package footprint identical for both parts? A: Yes. Both ISO7742FDW and ISO7742DW use the same 16-SOIC (0.295", 7.50mm Width) package with identical PCB footprint and mounting requirements.