HCPL-261A-560E Equivalent & Substitute Parts

Part Overview

The HCPL-261A-560E is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications. This device provides 3750Vrms isolation with open collector, Schottky clamped output configuration, operating at 10MBd data rate with 1kV/µs common mode transient immunity. The part is currently active in production with 1130 units in stock. Substitute parts are necessary when application requirements demand higher isolation voltage, improved common mode transient immunity, different output configurations, or when the primary part becomes unavailable.

Substiute Parts

HCPL-261A-560E

Broadcom LimitedIn Stock: 1202HCPL-261A-560E Datasheet

Current PartRFQ

ACPL-C61L-560E

Broadcom LimitedIn Stock: 4925ACPL-C61L-560E Datasheet

MFR RecommendedRFQ

ACPL-W61L-560E

Broadcom LimitedIn Stock: 19194ACPL-W61L-560E Datasheet

MFR RecommendedRFQ

HCPL2601SD

onsemiIn Stock: 23190HCPL2601SD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-261A-560E is determined by the following critical parameters:

Primary Substitution Criteria:

• Number of channels: Must be 1 channel
• Input type: Must be DC
• Data rate: Must support 10MBd or higher
• Mounting type: Must be surface mount
• RoHS compliance: Must maintain ROHS3 compliance
• Regulatory status: Must maintain REACH Unaffected and EAR99 classification

Secondary Compatibility Factors:

• Isolation voltage: Substitute must meet or exceed 3750Vrms
• Common mode transient immunity: Substitute must meet or exceed 1kV/µs
• Output type: May differ (open collector, tri-state, or push-pull acceptable)
• Supply voltage range: Substitute must accommodate 4.5V ~ 5.5V operation
• Operating temperature: Substitute must support -40°C minimum and 85°C maximum

The three qualified substitutes represent different output configurations while maintaining core isolation and data rate specifications.

Parameter Comparison

Engineering Selection Recommendations

ACPL-C61L-560E (Broadcom Limited) This substitute provides 5000Vrms isolation with 20kV/µs common mode transient immunity, exceeding the primary part specifications. The tri-state output configuration offers different circuit integration possibilities. Operating temperature extends to 105°C. Supply voltage range expands to 2.7V minimum. Propagation delay improves to 90ns. Product status is active with 4854 units in stock. Package format changes to 8-SOIC, requiring PCB layout modification. All regulatory certifications maintained.

ACPL-W61L-560E (Broadcom Limited) This substitute delivers 5000Vrms isolation with 20kV/µs common mode transient immunity. Push-pull output configuration provides active high and low drive capability. Operating temperature extends to 105°C. Supply voltage range expands to 2.7V minimum. Propagation delay improves to 80ns. Product status is active with 19100 units in stock. Package format changes to 6-SOIC, requiring PCB layout modification. All regulatory certifications maintained.

HCPL2601SD (onsemi) This substitute maintains open collector output configuration matching the primary part. Isolation voltage is 2500Vrms, below the primary specification. Common mode transient immunity is 5kV/µs, exceeding primary specification. Output current matches at 50 mA. Package format matches 8-SMD, Gull Wing, enabling direct PCB substitution. Product status is obsolete. All regulatory certifications maintained. Propagation delay improves to 75ns.

Frequently Asked Questions (FAQ)

Q: Can ACPL-C61L-560E replace HCPL-261A-560E in all applications? A: ACPL-C61L-560E meets or exceeds all electrical specifications of HCPL-261A-560E. However, the output type differs (tri-state versus open collector, Schottky clamped), and the package format changes from 8-DIP Gull Wing to 8-SOIC. Circuit design modifications are required to accommodate the different output configuration and PCB layout changes.

Q: Why does HCPL2601SD have lower isolation voltage than the primary part? A: HCPL2601SD provides 2500Vrms isolation, which is below the 3750Vrms specification of HCPL-261A-560E. This part is qualified as a substitute only for applications where 2500Vrms isolation is sufficient. The part is currently obsolete.

Q: What are the package differences between these substitutes? A: HCPL-261A-560E uses 8-DIP Gull Wing package. ACPL-C61L-560E uses 8-SOIC (0.154", 3.90mm Width). ACPL-W61L-560E uses 6-SOIC (0.180", 4.58mm Width). HCPL2601SD uses 8-SMD, Gull Wing. Package changes require PCB redesign except for HCPL2601SD, which maintains the same package footprint.

Q: Are all substitutes RoHS compliant? A: Yes. HCPL-261A-560E, ACPL-C61L-560E, ACPL-W61L-560E, and HCPL2601SD are all ROHS3 compliant. All maintain REACH Unaffected status and EAR99 export classification.

Q: What is the difference between open collector and tri-state output? A: Open collector output (HCPL-261A-560E and HCPL2601SD) can only pull the output low or leave it floating, requiring an external pull-up resistor. Tri-state output (ACPL-C61L-560E) can actively drive high, drive low, or enter high-impedance state, providing more flexible circuit integration.

Q: What is the difference between tri-state and push-pull output? A: Tri-state output (ACPL-C61L-560E) can drive high, drive low, or enter high-impedance state. Push-pull output (ACPL-W61L-560E) actively drives both high and low states without a high-impedance option, providing stronger output drive capability.

Q: Can ACPL-W61L-560E operate at 4.5V supply voltage? A: Yes. ACPL-W61L-560E supply voltage range is 2.7V ~ 5.5V, which includes the 4.5V ~ 5.5V range of the primary part. The substitute is compatible with the same supply voltage specifications.

Q: Why does HCPL2601SD show as obsolete? A: HCPL2601SD is listed with obsolete product status. While 23095 units are currently in stock, this part is no longer in active production. Use of this substitute should be limited to applications where long-term availability is not critical.

Q: What is common mode transient immunity (CMTI)? A: CMTI is the maximum rate of change of voltage between isolated sides that the optoisolator can tolerate without causing false output transitions. Higher CMTI values indicate better noise immunity in high-speed switching environments. ACPL-C61L-560E and ACPL-W61L-560E provide 20kV/µs, significantly exceeding the primary part's 1kV/µs specification.