HCPL-0721#060 Equivalent & Substitute Parts

Part Overview

The HCPL-0721#060 is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications. This component features 3750Vrms isolation voltage, 25MBd data rate, and push-pull totem pole output configuration in an 8-SO Tall package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain electrical and mechanical compatibility.

Substiute Parts

HCPL-0721#060

Broadcom LimitedIn Stock: 994HCPL-0721#060 Datasheet

Current PartRFQ

HCPL-0721-060E

Broadcom LimitedIn Stock: 1986HCPL-0721-060E Datasheet

DirectRFQ

FOD0710

Fairchild SemiconductorIn Stock: 19137FOD0710 Datasheet

MFR RecommendedRFQ

FOD0710R2

onsemiIn Stock: 3727FOD0710R2 Datasheet

MFR RecommendedRFQ

FOD0720

Fairchild SemiconductorIn Stock: 5469FOD0720 Datasheet

MFR RecommendedRFQ

FOD0720R2

Fairchild SemiconductorIn Stock: 3747FOD0720R2 Datasheet

MFR RecommendedRFQ

FOD0721

onsemiIn Stock: 1997FOD0721 Datasheet

MFR RecommendedRFQ

FOD0721R2

onsemiIn Stock: 3926FOD0721R2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Isolation Voltage: Must equal 3750Vrms
• Output Configuration: Must be Push-Pull, Totem Pole
• Package Type: Must be 8-SOIC (0.154", 3.90mm Width)
• Supply Voltage Range: Must be 4.5V ~ 5.5V
• Number of Channels: Must be 1
• Current Output per Channel: Must be 10 mA
• Propagation Delay: Must not exceed 40ns for both tpLH and tpHL

Substitute parts are grouped into two categories:

Category 1 - Direct Broadcom Equivalent: HCPL-0721-060E maintains identical electrical specifications and differs only in packaging format (Tube vs. bulk) and product status (Active vs. Discontinued).

Category 2 - Cross-Manufacturer Equivalents: FOD0710, FOD0710R2, FOD0720, FOD0720R2, FOD0721, and FOD0721R2 meet all critical electrical parameters. These parts exhibit higher Common Mode Transient Immunity (20kV/µs vs. 10kV/µs) and faster rise/fall times, which represent performance enhancements rather than deviations. Operating temperature range extends to 100°C for FOD series parts.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: HCPL-0721-060E is the direct equivalent from Broadcom Limited. This part maintains identical electrical specifications and mechanical compatibility while offering active product status and ROHS3 compliance. Selection of this part eliminates any cross-manufacturer qualification requirements.

Secondary Recommendations: FOD0720, FOD0720R2, FOD0721, and FOD0721R2 are functionally equivalent alternatives. These parts meet all critical electrical parameters and offer enhanced performance characteristics (20kV/µs CMTI, faster rise/fall times, extended operating temperature to 100°C). FOD0721 and FOD0721R2 from onsemi provide ROHS3 compliance. Packaging options include Tube (FOD0721) and Tape & Reel (FOD0721R2, FOD0720R2).

Alternative for Lower Data Rate Applications: FOD0710 and FOD0710R2 operate at 12.5Mbps, half the data rate of the original part. These are suitable only for applications where 12.5Mbps bandwidth is sufficient.

Frequently Asked Questions (FAQ)

Q: Can FOD0710 replace HCPL-0721#060 in all applications?

A: FOD0710 meets the critical electrical parameters (isolation voltage, output type, package, supply voltage, channel count, output current, propagation delay) but operates at 12.5Mbps versus the original 25MBd specification. Substitution is valid only if the application does not require 25MBd data rate performance.

Q: What is the difference between FOD0721 and FOD0721R2?

A: Both parts are electrically identical. FOD0721 is supplied in Tube packaging, while FOD0721R2 is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and volume handling.

Q: Are all substitute parts pin-compatible with HCPL-0721#060?

A: All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package. Pin compatibility is confirmed by identical package dimensions and surface mount mounting type. PCB layout and footprint remain unchanged.

Q: Why do FOD series parts show 20kV/µs CMTI instead of 10kV/µs?

A: The FOD series exhibits higher Common Mode Transient Immunity (20kV/µs) compared to the original specification (10kV/µs). This represents enhanced performance and does not prevent substitution. Applications designed for 10kV/µs CMTI operate within the FOD series capability margin.

Q: Is HCPL-0721-060E the same as HCPL-0721#060?

A: HCPL-0721-060E is the active production equivalent of HCPL-0721#060. Electrical specifications are identical. The primary difference is product status (Active vs. Discontinued) and packaging format (Tube vs. bulk). HCPL-0721-060E is the recommended direct replacement.

Q: Do all substitute parts meet RoHS requirements?

A: HCPL-0721-060E, FOD0710R2, FOD0721, and FOD0721R2 are ROHS3 compliant. FOD0710, FOD0720, and FOD0720R2 do not specify RoHS status in the provided data. Compliance verification with the manufacturer is required for these parts if RoHS certification is mandatory.