HCPL-7611-300E Equivalent & Substitute Parts

Part Overview

The HCPL-7611-300E is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications requiring 3750Vrms isolation voltage. This component features open collector output with Schottky clamping, 10MBd data rate capability, and 10kV/µs common mode transient immunity in an 8-DIP gull wing surface mount package.

The HCPL-7611-300E is classified as obsolete. Equivalent substitute parts are available from active product lines that maintain the same electrical and mechanical specifications, enabling direct replacement in existing designs without circuit modification.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Open Collector, Schottky Clamped
Data Rate	10MBd
Common Mode Transient Immunity (Min)	10kV/µs
Output Current per Channel	50 mA
Supply Voltage	4.5V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C
Package Type	8-SMD, Gull Wing
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-7611-300E is determined by the following critical parameters:

Isolation voltage rating of 3750Vrms or higher
Single channel configuration
Open collector output topology with Schottky clamping
Data rate capability of 10MBd or greater
Common mode transient immunity of 10kV/µs or higher
Output current rating of 50 mA per channel minimum
Supply voltage compatibility with 4.5V ~ 5.5V range
Operating temperature range encompassing -40°C ~ 85°C
8-pin surface mount package in gull wing configuration

The substitute parts listed below meet these criteria and are qualified for direct replacement.

Parameter Comparison

Parameter	HCPL-7611-300E	HCPL-2601-300E	HCPL2601SD
Manufacturer	Broadcom Limited	Broadcom Limited	onsemi
Product Status	Obsolete	Active	Obsolete
Isolation Voltage	3750Vrms	3750Vrms	2500Vrms
Number of Channels	1	1	1
Output Type	Open Collector, Schottky Clamped	Open Collector, Schottky Clamped	Open Collector
Data Rate	10MBd	10MBd	10Mbps
Common Mode Transient Immunity (Min)	10kV/µs	10kV/µs	5kV/µs
Output Current per Channel	50 mA	50 mA	50 mA
Propagation Delay tpLH / tpHL (Max)	75ns / 75ns	100ns / 100ns	75ns / 75ns
Supply Voltage	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

HCPL-2601-300E is the primary substitute for the obsolete HCPL-7611-300E. Both parts are manufactured by Broadcom Limited and maintain identical isolation voltage (3750Vrms), channel configuration, output topology, data rate, and common mode transient immunity specifications. The HCPL-2601-300E carries active product status and ROHS3 compliance, making it the preferred choice for new designs and production continuity. Propagation delay specifications differ slightly (100ns maximum versus 75ns maximum), which may require timing verification in delay-sensitive applications.

HCPL2601SD, manufactured by onsemi, provides an alternative substitute with equivalent channel count, output current rating, and package configuration. However, this part operates at reduced isolation voltage (2500Vrms versus 3750Vrms) and lower common mode transient immunity (5kV/µs versus 10kV/µs). HCPL2601SD is classified as obsolete. Selection of this part is appropriate only when application requirements do not demand the full 3750Vrms isolation or 10kV/µs CMTI specifications of the original design.

Frequently Asked Questions (FAQ)

Q: Can HCPL-2601-300E be used as a direct replacement for HCPL-7611-300E?

A: Yes. Both parts share identical isolation voltage (3750Vrms), single-channel configuration, open collector Schottky-clamped output, 10MBd data rate, 10kV/µs common mode transient immunity, 50 mA output current, and 8-SMD gull wing package specifications. The HCPL-2601-300E is the manufacturer-recommended substitute and carries active product status.

Q: What is the difference in propagation delay between HCPL-7611-300E and HCPL-2601-300E?

A: The HCPL-7611-300E specifies maximum propagation delay of 75ns for both rising and falling edges. The HCPL-2601-300E specifies 100ns maximum for both edges. Applications with strict timing requirements should verify that the 25ns additional delay does not impact system performance.

Q: Is HCPL2601SD a suitable replacement?

A: HCPL2601SD is suitable only if your application does not require the full 3750Vrms isolation voltage or 10kV/µs common mode transient immunity. This part operates at 2500Vrms isolation and 5kV/µs CMTI. If your design depends on these higher specifications, HCPL-2601-300E is the correct choice.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 8-pin SMD gull wing package configuration with identical pinout, enabling direct PCB replacement without layout modification.

Q: What compliance certifications apply to these substitutes?

A: HCPL-2601-300E and HCPL2601SD both carry ROHS3 compliance and REACH unaffected status. Both parts have moisture sensitivity level 1 (unlimited), indicating no special storage or handling requirements.

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