PS9114-A Optoisolator: Equivalent & Substitute Parts

Part Overview

The PS9114-A is a Logic Output Optoisolator manufactured by CEL, featuring 2500Vrms isolation voltage with open collector output, single channel configuration, and 10Mbps data rate. This component operates in the NEPOC series and is currently classified as obsolete product status. Due to obsolescence, identifying equivalent substitute parts with comparable electrical and mechanical specifications becomes essential for system redesign, legacy system maintenance, and supply chain continuity.

Substiute Parts

PS9114-A

CELIn Stock: 1000PS9114-A Datasheet

Current PartRFQ

HCPL-M611

Broadcom LimitedIn Stock: 2459HCPL-M611 Datasheet

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HCPL-M611-560E

Broadcom LimitedIn Stock: 4062HCPL-M611-560E Datasheet

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VO0611T

Vishay Semiconductor Opto DivisionIn Stock: 31508VO0611T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility is determined by the following critical parameters:

Core Electrical Compatibility Parameters:

• Single channel configuration (1 channel required)
• DC input type
• Open collector or open drain output topology
• 10Mbps data rate minimum
• 4.5V ~ 5.5V supply voltage range
• Propagation delay not exceeding specified maximums
• Operating temperature range coverage

Mechanical Compatibility Parameters:

• Surface mount technology
• 5-lead to 8-lead SOIC package variants acceptable

Isolation Voltage Consideration: The PS9114-A specifies 2500Vrms isolation. Substitute parts with higher isolation ratings (3750Vrms, 4000Vrms) maintain backward compatibility and provide enhanced isolation margin for designs that do not require the exact minimum isolation specification.

Parameter Comparison

Engineering Selection Recommendations

HCPL-M611 and HCPL-M611-560E (Broadcom Limited): Both HCPL-M611 variants maintain identical package dimensions (6-SOIC, 5 Leads) to the PS9114-A, enabling direct footprint compatibility. Electrical specifications exceed the PS9114-A minimum requirements across isolation voltage (3750Vrms vs 2500Vrms), output current capacity (50 mA vs 25 mA), and CMTI rating (10kV/µs). Propagation delays match the original specification exactly at 75ns maximum. The HCPL-M611-560E variant is ROHS3 compliant, whereas the base HCPL-M611 is RoHS non-compliant. Both remain REACH unaffected.

VO0611T (Vishay Semiconductor Opto Division): The VO0611T provides the highest isolation voltage (4000Vrms) and superior CMTI performance (15kV/µs). The package form factor differs at 8-SOIC versus the original 5-lead configuration, necessitating PCB layout modifications. Propagation delays extend to 100ns maximum, representing a 33% increase over the PS9114-A specification. Operating temperature range extends to 100°C. RoHS3 compliance and REACH unaffected status apply.

Product Status Consideration: HCPL-M611, HCPL-M611-560E, and VO0611T maintain active product status with production availability. Selection between HCPL-M611-560E and base HCPL-M611 depends on regulatory compliance requirements, with ROHS3 compliance applicable to HCPL-M611-560E.

Frequently Asked Questions (FAQ)

Q: Can HCPL-M611 variants replace PS9114-A in existing designs without circuit modification? A: HCPL-M611 and HCPL-M611-560E share identical package dimensions and pinout compatibility with PS9114-A. Circuit modifications are not required. However, output current capacity increases from 25 mA to 50 mA, and Schottky clamping is added to the output stage. Designs should verify compatibility with higher current drive capability.

Q: What are the key differences between HCPL-M611 and HCPL-M611-560E? A: Both parts are electrically and functionally identical. The primary distinction is RoHS compliance status: HCPL-M611-560E meets ROHS3 compliance requirements, while the base HCPL-M611 is RoHS non-compliant. Both remain REACH unaffected.

Q: Is VO0611T a direct replacement for PS9114-A? A: VO0611T offers superior isolation voltage and CMTI rating but requires PCB redesign due to different package form factor (8-SOIC vs 5-lead SOIC). Propagation delay specifications are also less stringent (100ns vs 75ns). Electrical functionality remains compatible with 10MBd data rate and 4.5V ~ 5.5V supply operation. Substitution is technically feasible for applications not constrained by existing PCB layouts or strict timing requirements.

Q: Does higher isolation voltage in substitute parts affect circuit design? A: Higher isolation ratings (3750Vrms and 4000Vrms in substitutes vs 2500Vrms in PS9114-A) provide enhanced isolation margin and do not negatively impact circuit function. Designs specified for 2500Vrms minimum isolation operate with improved performance characteristics in higher-rated replacements.

Q: What supply voltage range applies to all substitute parts? A: All substitute parts, including PS9114-A, operate within the identical supply voltage range of 4.5V ~ 5.5V. No supply regulation modifications are required for substitution.