HCPL-7611-000E Equivalent & Substitute Parts

Part Overview

The HCPL-7611-000E is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications. This 3.75kV isolation rated device features open collector output with Schottky clamping, supporting 10MBd data rates and 10kV/µs common mode transient immunity in an 8-DIP through-hole package. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-7611-000E
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Common Mode Transient Immunity (Min)	10kV/µs
Input Type	DC
Output Type	Open Collector, Schottky Clamped
Current - Output / Channel	50 mA
Data Rate	10MBd
Propagation Delay tpLH / tpHL (Max)	75ns / 75ns
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-7611-000E is determined by the following critical parameters:

Isolation Voltage: Minimum 3750Vrms required
Common Mode Transient Immunity: Minimum 10kV/µs required
Output Configuration: Open Collector output topology
Data Rate: 10MBd or higher
Package: 8-DIP through-hole form factor
Supply Voltage: 4.5V ~ 5.5V compatibility
Operating Temperature Range: -40°C ~ 85°C

The HCPL-2601-000E (Broadcom) qualifies as a direct substitute, maintaining identical isolation voltage, CMTI rating, and all electrical specifications while offering active product status. The onsemi HCPL2601 and HCPL2611 variants present reduced isolation voltage (2500Vrms) and lower CMTI (5kV/µs for HCPL2601), making them unsuitable for applications requiring the full 3750Vrms isolation specification of the original part.

Parameter Comparison

Parameter	HCPL-7611-000E	HCPL-2601-000E	HCPL2601 (onsemi)	HCPL2611 (onsemi)
Manufacturer	Broadcom Limited	Broadcom Limited	onsemi	onsemi
Number of Channels	1	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	2500Vrms	2500Vrms
Common Mode Transient Immunity (Min)	10kV/µs	10kV/µs	5kV/µs	10kV/µs
Input Type	DC	DC	DC	DC
Output Type	Open Collector, Schottky Clamped	Open Collector, Schottky Clamped	Open Collector	Open Collector
Current - Output / Channel	50 mA	50 mA	50 mA	50 mA
Data Rate	10MBd	10MBd	10Mbps	10Mbps
Propagation Delay tpLH / tpHL (Max)	75ns / 75ns	100ns / 100ns	75ns / 75ns	75ns / 75ns
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Obsolete	Obsolete
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The HCPL-2601-000E from Broadcom Limited is the qualified substitute for the HCPL-7611-000E. Both devices maintain identical isolation voltage (3750Vrms) and common mode transient immunity (10kV/µs), ensuring functional equivalence in high-voltage isolation applications. The HCPL-2601-000E carries active product status and ROHS3 compliance, providing supply chain continuity and regulatory alignment for new designs and legacy system support.

The onsemi HCPL2601 and HCPL2611 variants are not suitable substitutes due to reduced isolation voltage specification (2500Vrms versus 3750Vrms required). While the HCPL2611 matches the 10kV/µs CMTI requirement, the lower isolation rating disqualifies it from applications demanding the full 3750Vrms isolation specification of the original HCPL-7611-000E.

Frequently Asked Questions (FAQ)

Q: Can the onsemi HCPL2601 replace the HCPL-7611-000E?

A: No. The onsemi HCPL2601 provides only 2500Vrms isolation voltage compared to the 3750Vrms specification of the HCPL-7611-000E. Additionally, its common mode transient immunity is rated at 5kV/µs, below the 10kV/µs requirement. Use only in applications with reduced isolation voltage requirements.

Q: What is the primary difference between HCPL-2601-000E and HCPL2611?

A: The HCPL-2601-000E (Broadcom) maintains 3750Vrms isolation voltage with 10kV/µs CMTI, matching the original HCPL-7611-000E specification. The HCPL2611 (onsemi) provides only 2500Vrms isolation voltage, making it unsuitable for equivalent replacement despite matching CMTI performance.

Q: Are all substitute parts available in 8-DIP packaging?

A: Yes. All listed substitute parts are supplied in 8-DIP (0.300", 7.62mm) through-hole packages, ensuring direct mechanical compatibility with existing PCB layouts.

Q: Does the HCPL-2601-000E have better propagation delay than the original?

A: The HCPL-2601-000E specifies maximum propagation delay of 100ns compared to 75ns for the HCPL-7611-000E. This 25ns difference is within typical system timing margins for 10MBd optoisolator applications but should be verified against specific circuit timing requirements.

Q: What compliance certifications apply to the recommended substitute?

A: The HCPL-2601-000E is ROHS3 compliant and carries REACH Unaffected status, meeting current regulatory requirements for electronic component procurement and environmental compliance.

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