HCPL-260L-320 Optoisolator Equivalent & Substitute Parts

Part Overview

The HCPL-260L-320 is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed isolation applications requiring 5000Vrms isolation voltage and 10kV/µs common mode transient immunity. This component features open collector output with Schottky clamping, 15MBd data rate capability, and operates across dual supply voltage ranges (2.7V–3.6V and 4.5V–5.5V). The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

HCPL-260L-320

Broadcom LimitedIn Stock: 883HCPL-260L-320 Datasheet

Current PartRFQ

HCPL-260L-320E

Broadcom LimitedIn Stock: 959HCPL-260L-320E Datasheet

DirectRFQ

FOD260LS

onsemiIn Stock: 1375FOD260LS Datasheet

MFR RecommendedRFQ

FOD260LSD

onsemiIn Stock: 1463FOD260LSD Datasheet

MFR RecommendedRFQ

HCPL2601SD

onsemiIn Stock: 23190HCPL2601SD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-260L-320 is determined by the following critical parameters:

• Isolation Voltage: Minimum 5000Vrms required
• Output Configuration: Open collector with Schottky clamping
• Number of Channels: Single channel (1)
• Input Type: DC input
• Output Current: 50 mA per channel
• Package Type: 8-SMD, Gull Wing form factor
• Operating Temperature Range: -40°C to 85°C minimum

Substitute parts are grouped into two categories:

Direct Equivalents (Identical Specifications): Parts maintaining all critical electrical parameters and package specifications as the HCPL-260L-320.

Functional Alternatives (Relaxed Parameters): Parts with reduced isolation voltage (2500Vrms) or lower common mode transient immunity that may be suitable for applications with less stringent isolation requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: HCPL-260L-320E

The HCPL-260L-320E is the direct equivalent of the HCPL-260L-320, manufactured by Broadcom Limited with identical electrical specifications and package configuration. This part maintains all critical parameters including 5000Vrms isolation voltage, 10kV/µs common mode transient immunity, 15MBd data rate, and dual supply voltage ranges. The HCPL-260L-320E is currently active in production and ROHS3 compliant, making it the preferred replacement for discontinued HCPL-260L-320 units.

Secondary Recommendations: FOD260LS and FOD260LSD

The FOD260LS (Tube packaging) and FOD260LSD (Tape & Reel packaging) are onsemi-manufactured alternatives that maintain 5000Vrms isolation voltage and open collector Schottky-clamped output configuration. These parts exceed the common mode transient immunity specification at 25kV/µs compared to the original 10kV/µs requirement. Data rate is specified at 10Mbps versus the original 15MBd, and propagation delay tpLH is 90ns versus 75ns. Both parts are ROHS3 compliant and currently in active production. Supply voltage range is 3V–5.5V, which is compatible with the 4.5V–5.5V portion of the original specification but does not support the 2.7V–3.6V range.

Tertiary Option: HCPL2601SD

The HCPL2601SD is an onsemi-manufactured part with reduced isolation voltage (2500Vrms) and lower common mode transient immunity (5kV/µs). This part is suitable only for applications where the full 5000Vrms isolation is not required. The part is currently obsolete and should be considered only when 2500Vrms isolation is acceptable and supply voltage is limited to 4.5V–5.5V.

Frequently Asked Questions (FAQ)

Q: Can HCPL-260L-320E be used as a direct replacement for HCPL-260L-320?

A: Yes. The HCPL-260L-320E maintains identical electrical specifications and package configuration. The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 compliant versus non-compliant). No circuit modifications are required.

Q: What are the key differences between FOD260LS/FOD260LSD and the original HCPL-260L-320?

A: The FOD260 variants maintain 5000Vrms isolation and open collector Schottky-clamped output but differ in three parameters: common mode transient immunity is higher (25kV/µs versus 10kV/µs), data rate is lower (10Mbps versus 15MBd), and propagation delay tpLH is longer (90ns versus 75ns). Supply voltage range is 3V–5.5V, which does not include the 2.7V–3.6V range of the original part.

Q: Is HCPL2601SD a suitable substitute?

A: HCPL2601SD is suitable only for applications where 2500Vrms isolation voltage is acceptable. This part has lower common mode transient immunity (5kV/µs) and is currently obsolete. Use only if isolation voltage requirements are reduced and supply voltage is 4.5V–5.5V.

Q: What packaging options are available for substitute parts?

A: HCPL-260L-320E is available in Tube packaging. FOD260LS is available in Tube packaging, and FOD260LSD is available in Tape & Reel (TR) packaging. All maintain the 8-SMD, Gull Wing form factor compatible with the original part.

Q: Are all substitute parts RoHS compliant?

A: HCPL-260L-320E, FOD260LS, FOD260LSD, and HCPL2601SD are all ROHS3 compliant. The original HCPL-260L-320 is RoHS non-compliant.

Q: Which substitute part has the best availability?

A: FOD260LSD has the highest inventory (1413 Pcs), followed by FOD260LS (1290 Pcs) and HCPL-260L-320E (874 Pcs). HCPL2601SD has the largest inventory (23095 Pcs) but is obsolete.