HCPL-261N-360E Equivalent & Substitute Parts

Part Overview

The HCPL-261N-360E is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications. This 3.75kV isolation device features open collector output with Schottky clamping, operating at 10MBd data rate with 1kV/µs common mode transient immunity. The part is currently active in production and widely stocked (729 pcs available). Substitute parts are necessary when output topology requirements differ, isolation voltage specifications change, or when alternative manufacturers' components are preferred for supply chain optimization or cost considerations.

Substiute Parts

HCPL-261N-360E

Broadcom LimitedIn Stock: 835HCPL-261N-360E Datasheet

Current PartRFQ

ACPL-C61L-060E

Broadcom LimitedIn Stock: 3119ACPL-C61L-060E Datasheet

MFR RecommendedRFQ

ACPL-W61L-060E

Broadcom LimitedIn Stock: 3571ACPL-W61L-060E Datasheet

MFR RecommendedRFQ

HCPL2601SD

onsemiIn Stock: 23190HCPL2601SD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HCPL-261N-360E is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Single channel configuration (1 input, 0 side 2 inputs)
• 10MBd data rate capability
• DC input type
• Surface mount technology
• ROHS3 compliance
• Active or equivalent product status

Variable Parameters Allowing Substitution:

• Isolation voltage (3750Vrms minimum acceptable, higher values permitted)
• Output topology (open collector, tri-state, or push-pull configurations acceptable)
• Common mode transient immunity (1kV/µs minimum acceptable, higher values permitted)
• Output current capability (50mA minimum acceptable, higher values permitted)
• Supply voltage range (4.5V-5.5V baseline, wider ranges acceptable)
• Operating temperature range (-40°C to 85°C baseline, extended ranges acceptable)
• Package form factor (8-SMD gull wing baseline, alternative SMD packages acceptable)

The three substitute parts listed represent different output topology options while maintaining core isolation and data rate specifications.

Parameter Comparison

Engineering Selection Recommendations

ACPL-C61L-060E (Tri-State Output): This Broadcom substitute provides higher isolation voltage (5000Vrms vs 3750Vrms) and superior common mode transient immunity (20kV/µs vs 1kV/µs). The tri-state output topology enables multi-master bus applications. Trade-off: reduced output current (10mA vs 50mA) and different package footprint (8-SOIC vs 8-SMD gull wing). Active product status with extended operating temperature range (-40°C to 105°C). Suitable for applications requiring higher isolation margins and bus-compatible output stages.

ACPL-W61L-060E (Push-Pull Output): This Broadcom substitute offers the highest isolation voltage (5000Vrms) and common mode transient immunity (20kV/µs) among all options. Push-pull totem pole output provides active high and low drive capability. Trade-off: reduced output current (10mA vs 50mA), smallest package footprint (6-SOIC vs 8-SMD gull wing), and reduced pin count. Active product status with extended operating temperature range. Suitable for applications requiring symmetric rise/fall times and active output drive.

HCPL2601SD (Open Collector, onsemi): This onsemi substitute maintains identical output topology (open collector) and output current capability (50mA) as the main part. Lower isolation voltage (2500Vrms vs 3750Vrms) and reduced common mode transient immunity (5kV/µs vs 1kV/µs). Identical package footprint (8-SMD gull wing) and supply voltage range. Obsolete product status. Suitable only for legacy designs or when isolation voltage reduction is acceptable and supply chain availability is critical.

Compliance Basis: All substitute parts maintain ROHS3 compliance and EAR99 export classification. Selection should prioritize active product status (ACPL-C61L-060E and ACPL-W61L-060E) over obsolete alternatives (HCPL2601SD) for new designs.

Frequently Asked Questions (FAQ)

Q: Can ACPL-C61L-060E replace HCPL-261N-360E in existing designs? A: Electrical substitution is possible if the circuit tolerates tri-state output topology and 10mA output current. PCB layout modification is required due to different package footprint (8-SOIC vs 8-SMD gull wing). Functional verification is necessary to confirm tri-state behavior compatibility with pull-up resistor networks.

Q: What is the key difference between ACPL-C61L-060E and ACPL-W61L-060E? A: Output topology differs: ACPL-C61L-060E provides tri-state (high-impedance off-state), while ACPL-W61L-060E provides push-pull totem pole (active high and low drive). ACPL-W61L-060E uses 6-pin package versus 8-pin for ACPL-C61L-060E. Both provide identical isolation voltage and common mode transient immunity.

Q: Why is HCPL2601SD listed as obsolete? A: HCPL2601SD is marked obsolete by onsemi. While functionally similar in output topology and current capability, lower isolation voltage (2500Vrms) and reduced common mode transient immunity (5kV/µs) make it unsuitable for new designs. Use only for legacy system maintenance when supply of active alternatives is unavailable.

Q: Can I use a substitute with lower isolation voltage? A: HCPL2601SD provides 2500Vrms isolation versus 3750Vrms for the main part. Substitution is only acceptable if circuit design margins permit reduced isolation voltage. System-level isolation requirements must be re-evaluated.

Q: What package considerations apply to substitution? A: HCPL-261N-360E and HCPL2601SD use identical 8-SMD gull wing packages. ACPL-C61L-060E uses 8-SOIC (0.154" width), and ACPL-W61L-060E uses 6-SOIC (0.180" width). PCB footprint redesign is required for Broadcom ACPL substitutes. Pin assignment verification is mandatory before layout modification.

Q: Are all substitutes suitable for -40°C to 85°C operating range? A: ACPL-C61L-060E and ACPL-W61L-060E support extended range (-40°C to 105°C), exceeding the main part specification. HCPL2601SD matches the -40°C to 85°C range. All substitutes are acceptable for the specified temperature range.