HCPL-7720-520 Equivalent & Substitute Parts

Part Overview

The HCPL-7720-520 is a logic output optoisolator featuring 5000Vrms isolation with push-pull, totem pole output configuration. This single-channel device operates at 25MBd data rate with 10kV/µs common mode transient immunity, designed for high-speed digital isolation applications in industrial and automotive environments. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

HCPL-7720-520

Broadcom LimitedIn Stock: 1131HCPL-7720-520 Datasheet

Current PartRFQ

HCPL-7720-520E

Broadcom LimitedIn Stock: 5827HCPL-7720-520E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HCPL-7720-520 is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating: 5000Vrms
• Channel configuration: Single channel with logic input
• Output topology: Push-pull, totem pole
• Data rate capability: 25MBd minimum
• Common mode transient immunity: 10kV/µs minimum
• Output current per channel: 10 mA minimum
• Propagation delay: 40ns maximum (both tpLH and tpHL)
• Supply voltage range: 4.5V to 5.5V
• Package type: 8-SMD, Gull Wing
• Operating temperature range: -40°C to 85°C

The HCPL-7720-520E meets all specified electrical and mechanical parameters, differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The HCPL-7720-520E is the direct functional equivalent of the HCPL-7720-520. Both parts share identical electrical specifications and mechanical packaging. Selection between these parts is determined by:

Product Status: The HCPL-7720-520 is discontinued at DiGi Electronics. The HCPL-7720-520E maintains active product status with confirmed inventory availability (5800 pcs), ensuring long-term supply chain continuity.

Regulatory Compliance: The HCPL-7720-520E achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. For applications subject to RoHS directives or customer compliance requirements, the HCPL-7720-520E is the appropriate selection.

Packaging Considerations: The HCPL-7720-520E is supplied in Tape & Reel format, standard for automated assembly operations. The original part packaging format differs only in presentation; electrical and mechanical performance remain identical.

Frequently Asked Questions (FAQ)

Q: Can the HCPL-7720-520E be used as a direct replacement for the HCPL-7720-520 in existing designs?

A: Yes. The HCPL-7720-520E is electrically and mechanically identical to the HCPL-7720-520. All electrical parameters, including isolation voltage, data rate, propagation delay, and output current, are equivalent. The 8-SMD Gull Wing package is identical, permitting direct PCB substitution without design modification.

Q: What is the difference between the HCPL-7720-520 and HCPL-7720-520E?

A: The parts differ in product status, packaging format, and RoHS compliance. The HCPL-7720-520E is actively manufactured and supplied in Tape & Reel format with ROHS3 compliance. The HCPL-7720-520 is discontinued and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Why is the HCPL-7720-520 discontinued?

A: The HCPL-7720-520 has been discontinued at DiGi Electronics. The HCPL-7720-520E serves as the active production equivalent and is recommended for all new designs and procurement.

Q: Are there any compatibility concerns when switching from HCPL-7720-520 to HCPL-7720-520E?

A: No compatibility concerns exist. Both parts conform to identical electrical specifications, operating ranges, and package dimensions. Substitution requires no circuit modifications or design changes.

Q: What is the significance of ROHS3 compliance on the HCPL-7720-520E?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. This is relevant for applications subject to EU regulations or customer compliance mandates. The original HCPL-7720-520 does not meet this requirement.