HCPL2611S Equivalent & Substitute Parts

Part Overview

The HCPL2611S is a logic output optoisolator manufactured by onsemi, featuring 2500Vrms isolation voltage, open collector output, and 10Mbps data rate in an 8-SMD package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across -40°C to 85°C and complies with ROHS3 standards.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL2611S
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	2500Vrms
Common Mode Transient Immunity (Min)	10kV/µs
Output Type	Open Collector
Current - Output / Channel	50 mA
Data Rate	10Mbps
Propagation Delay tpLH / tpHL (Max)	75ns / 75ns
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-SMD, Gull Wing
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the HCPL2611S is determined by the following critical parameters:

Isolation Voltage: Minimum 2500Vrms (higher values acceptable)
Output Type: Open Collector configuration required
Data Rate: Minimum 10Mbps
Common Mode Transient Immunity: Minimum 10kV/µs
Current Output: 50 mA per channel
Package: 8-SMD, Gull Wing form factor
Supply Voltage: 4.5V ~ 5.5V compatibility
Propagation Delay: Maximum 75ns for both tpLH and tpHL

Substitute parts are grouped into two categories:

Category 1 - Direct Manufacturer Upgrade (onsemi): HCPL2611SM offers enhanced specifications with 5000Vrms isolation and active product status while maintaining all core electrical parameters.

Category 2 - Cross-Manufacturer Alternatives: Parts from Isocom Components and Broadcom Limited meet the minimum electrical requirements with variations in isolation voltage, CMTI, and data rate specifications.

Parameter Comparison

Parameter	HCPL2611S	HCPL2611SM	6N137SMT&R	HCPL-260L-500E	HCPL-260L-520E	HCPL-260L-560E
Manufacturer	onsemi	onsemi	Isocom Components 2004 LTD	Broadcom Limited	Broadcom Limited	Broadcom Limited
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - Isolation	2500Vrms	5000Vrms	5000Vrms	3750Vrms	5000Vrms	3750Vrms
Common Mode Transient Immunity (Min)	10kV/µs	10kV/µs	5kV/µs	10kV/µs	10kV/µs	10kV/µs
Output Type	Open Collector	Open Collector	Open Collector	Open Collector, Schottky Clamped	Open Collector, Schottky Clamped	Open Collector, Schottky Clamped
Current - Output / Channel	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA
Data Rate	10Mbps	10Mbps	10Mbps	15MBd	15MBd	15MBd
Propagation Delay tpLH / tpHL (Max)	75ns / 75ns	75ns / 75ns	75ns / 75ns	75ns / 75ns	75ns / 75ns	75ns / 75ns
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	7V	2.7V ~ 3.6V, 4.5V ~ 5.5V	2.7V ~ 3.6V, 4.5V ~ 5.5V	2.7V ~ 3.6V, 4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 100°C	-55°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

HCPL2611SM is the primary substitute for HCPL2611S. Both parts are manufactured by onsemi, share the same base product number (HCPL2611), and maintain identical electrical performance specifications. HCPL2611SM is active in production status and offers enhanced isolation voltage (5000Vrms versus 2500Vrms), extended operating temperature range (-40°C to 100°C), and improved rise/fall time characteristics. This part is ROHS3 compliant and suitable for direct replacement in new designs.

6N137SMT&R from Isocom Components meets core substitution criteria with 5000Vrms isolation, 10Mbps data rate, and 50mA output current. However, this part operates at 7V supply voltage and features reduced CMTI (5kV/µs versus 10kV/µs). Selection requires verification of supply voltage compatibility in the target application.

HCPL-260L series (HCPL-260L-500E, HCPL-260L-520E, HCPL-260L-560E) from Broadcom Limited provides enhanced data rate (15MBd) and dual supply voltage support (2.7V ~ 3.6V and 4.5V ~ 5.5V). These parts feature Schottky clamped open collector outputs and maintain 10kV/µs CMTI. Isolation voltage varies between 3750Vrms and 5000Vrms depending on part number. All are active products with ROHS3 compliance.

Selection between 3750Vrms and 5000Vrms variants depends on application isolation requirements. Parts with 5000Vrms isolation (HCPL-260L-520E) provide maximum margin above the original 2500Vrms specification.

Frequently Asked Questions (FAQ)

Q: Can HCPL2611SM directly replace HCPL2611S without circuit modifications?

A: Yes. HCPL2611SM maintains identical electrical specifications for voltage supply (4.5V ~ 5.5V), output current (50mA), data rate (10Mbps), propagation delay (75ns max), and package form factor (8-SMD, Gull Wing). The higher isolation voltage (5000Vrms) and extended temperature range are backward compatible enhancements.

Q: What is the key difference between HCPL2611S and HCPL-260L series substitutes?

A: HCPL-260L parts offer higher data rate (15MBd versus 10Mbps) and dual supply voltage support. The primary trade-off is lower isolation voltage in some variants (3750Vrms) compared to HCPL2611S (2500Vrms). HCPL-260L-520E provides 5000Vrms isolation with enhanced performance.

Q: Is 6N137SMT&R suitable for 4.5V ~ 5.5V supply applications?

A: No. 6N137SMT&R operates at 7V supply voltage. This part requires circuit redesign to accommodate the higher supply voltage and is not recommended for direct substitution in 4.5V ~ 5.5V systems.

Q: Do all substitute parts maintain the same package footprint?

A: Yes. All listed substitutes use 8-SMD, Gull Wing packaging, ensuring PCB layout compatibility with HCPL2611S.

Q: Which substitute offers the best isolation voltage margin?

A: HCPL2611SM and HCPL-260L-520E both provide 5000Vrms isolation, doubling the original 2500Vrms specification. Both are active products with full ROHS3 compliance.

Q: Are there temperature range considerations for substitute selection?

A: HCPL2611SM extends the upper operating limit to 100°C (versus 85°C for HCPL2611S). 6N137SMT&R supports -55°C to 85°C. HCPL-260L series maintains -40°C to 85°C. Selection depends on application thermal requirements.

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