74OL6000 Equivalent & Substitute Parts

Part Overview

The 74OL6000 is a Logic Output Optoisolator manufactured by onsemi, featuring 5.3kV isolation voltage, push-pull totem pole output configuration, and 15MBd data rate capability. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The 74OL6000 operates within the 0°C to 70°C temperature range and is packaged in a 6-DIP through-hole format.

Substiute Parts

74OL6000

onsemiIn Stock: 229674OL6000 Datasheet

Current PartRFQ

HCPL-2200

Broadcom LimitedIn Stock: 1380HCPL-2200 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74OL6000 requires evaluation based on the following critical parameters:

• Isolation Voltage: The 74OL6000 provides 5300Vrms isolation. Substitute parts must maintain isolation voltage at or above this specification to preserve system safety margins.
• Output Configuration: The push-pull totem pole output is a functional requirement. Substitute parts with different output types (tri-state, open-collector) may require circuit redesign.
• Data Rate: The 15MBd capability defines maximum signal frequency. Substitutes with lower data rates may limit system performance.
• Common Mode Transient Immunity (CMTI): The 5kV/µs specification is critical for noise immunity in high-speed switching environments.
• Output Current: The 40 mA per channel output current capability must be matched or exceeded.
• Supply Voltage Range: The 4.5V to 5.5V supply range is standard for logic-level optoisolators.
• Package Compatibility: The 6-DIP through-hole package defines PCB layout constraints.

The HCPL-2200 is identified as a substitute part but exhibits significant parameter deviations that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The HCPL-2200 is an active product from Broadcom Limited, providing supply chain continuity for the obsolete 74OL6000. However, direct substitution requires careful evaluation of application-specific requirements due to significant parameter differences.

Isolation Voltage Consideration: The HCPL-2200 provides 3750Vrms isolation compared to the 74OL6000's 5300Vrms. Applications requiring the full 5300Vrms isolation margin cannot use the HCPL-2200 without circuit redesign or additional isolation measures.

Output Configuration Difference: The 74OL6000 features push-pull totem pole output, while the HCPL-2200 uses tri-state output. Tri-state output enables multi-driver bus configurations but requires pull-up resistors and different circuit topology. Existing designs using push-pull output require verification of tri-state compatibility.

Data Rate and Timing: The HCPL-2200 operates at 2.5MBd maximum data rate versus the 74OL6000's 15MBd capability. Propagation delay increases from 100ns to 300ns. Applications operating above 2.5MBd cannot use the HCPL-2200.

Output Current: The HCPL-2200 provides 25 mA output current per channel, compared to the 74OL6000's 40 mA. Load impedance and fanout requirements must be verified to ensure adequate drive capability.

Common Mode Transient Immunity: The HCPL-2200 CMTI specification of 1kV/µs is significantly lower than the 74OL6000's 5kV/µs. Applications with high-speed switching or noisy environments may experience reduced noise immunity.

Product Status: The HCPL-2200 is actively manufactured and supported, providing long-term availability compared to the obsolete 74OL6000 status.

Frequently Asked Questions (FAQ)

Q: Can the HCPL-2200 directly replace the 74OL6000 in existing designs?

A: Direct pin-for-pin replacement is not possible due to package differences (6-DIP versus 8-DIP) and functional parameter variations. Circuit redesign is required to accommodate tri-state output configuration, lower isolation voltage, reduced data rate, and lower output current specifications.

Q: What are the primary limitations of using HCPL-2200 as a substitute?

A: The HCPL-2200 has lower isolation voltage (3750Vrms vs. 5300Vrms), reduced data rate (2.5MBd vs. 15MBd), lower output current (25 mA vs. 40 mA), reduced CMTI (1kV/µs vs. 5kV/µs), and different output type (tri-state vs. push-pull). These differences may not be acceptable for all applications.

Q: Are there package compatibility considerations?

A: The 74OL6000 uses 6-DIP packaging while the HCPL-2200 uses 8-DIP packaging. Both maintain the same 0.300" (7.62mm) pitch, but the additional pins require PCB layout modifications and socket redesign.

Q: What applications are suitable for HCPL-2200 substitution?

A: The HCPL-2200 is suitable for applications where data rates do not exceed 2.5MBd, isolation voltage requirements are 3750Vrms or lower, output current requirements are 25 mA or less, and tri-state output configuration is compatible with system design. The wider operating temperature range (-40°C to 85°C) and extended supply voltage range (4.5V to 20V) may provide advantages in certain environments.

Q: How does the tri-state output affect circuit design?

A: Tri-state output requires pull-up resistors to establish logic high levels and enables multiple drivers on a single bus. Push-pull output actively drives both high and low levels without external pull-up resistors. Circuit topology must be modified to accommodate tri-state operation.

Q: What is the impact of lower Common Mode Transient Immunity?

A: Lower CMTI (1kV/µs vs. 5kV/µs) reduces the component's ability to reject high-speed common-mode voltage changes. Applications with fast switching transients or high-noise environments may experience increased susceptibility to false triggering or signal corruption.