EL5455ISZ Equivalent & Substitute Parts

Part Overview

The EL5455ISZ is a voltage feedback operational amplifier manufactured by Renesas Electronics Corporation, configured as a 4-circuit integrated circuit in a 14-SOIC surface mount package. This device is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and production continuity. The EL5455ISZ operates across a supply voltage range of 5V to 12V and delivers a slew rate of 180V/µs with a gain bandwidth product of 165 MHz, making it suitable for general-purpose amplification applications requiring moderate bandwidth performance.

Substiute Parts

EL5455ISZ

Renesas Electronics CorporationIn Stock: 1023EL5455ISZ Datasheet

Current PartRFQ

LT1254CS#PBF

Analog Devices Inc.In Stock: 1613LT1254CS#PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EL5455ISZ is determined by compatibility across the following critical parameters:

Package and Mounting Compatibility: Both the main part and substitute must utilize the 14-SOIC surface mount package to ensure direct board-level compatibility without layout modifications.

Circuit Count: The substitute must provide 4 independent amplifier circuits to maintain functional equivalence in multi-channel applications.

Bandwidth Performance: The -3dB bandwidth specification of 270 MHz establishes the minimum frequency response requirement for signal processing applications.

Supply Voltage Range: The substitute must operate within or encompass the 5V to 12V supply voltage range of the original device.

Output Current Capability: The substitute must deliver sufficient output current per channel to support the intended load impedance.

Compliance and Certification: Both devices must maintain ROHS3 compliance and REACH unaffected status for regulatory adherence.

The LT1254CS#PBF from Analog Devices Inc. qualifies as a substitute based on these parameters, despite employing current feedback topology rather than voltage feedback architecture. This functional difference does not preclude substitution when circuit design accommodates the alternative feedback topology.

Parameter Comparison

Engineering Selection Recommendations

The LT1254CS#PBF is an active product from Analog Devices Inc., providing long-term availability and supply chain stability compared to the obsolete EL5455ISZ. Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component procurement.

The LT1254CS#PBF demonstrates superior slew rate performance at 250V/µs relative to the EL5455ISZ at 180V/µs, enabling faster signal transitions in time-critical applications. The substitute device supports an expanded supply voltage range of 4V to 28V in single-supply configuration, providing greater design flexibility for multi-voltage system architectures.

The EL5455ISZ delivers higher output current per channel at 105 mA compared to the LT1254CS#PBF at 55 mA. Applications requiring maximum output current capability must evaluate load impedance specifications against the reduced output current of the substitute.

The LT1254CS#PBF exhibits superior moisture handling characteristics with MSL rating of 1 (Unlimited) versus the EL5455ISZ MSL rating of 3 (168 Hours), reducing moisture-related reliability concerns in high-humidity storage and manufacturing environments.

The fundamental architectural difference between voltage feedback (EL5455ISZ) and current feedback (LT1254CS#PBF) topologies requires circuit design evaluation. Current feedback amplifiers exhibit different frequency response characteristics and impedance relationships compared to voltage feedback designs. Circuit compensation networks and feedback resistor values may require adjustment to achieve equivalent performance.

Frequently Asked Questions (FAQ)

Q: Can the LT1254CS#PBF be used as a direct pin-for-pin replacement for the EL5455ISZ?

A: Both devices utilize the 14-SOIC package with identical physical dimensions (0.154", 3.90mm width), enabling direct board-level substitution without layout modifications. However, the architectural difference between voltage feedback and current feedback topologies may require circuit design modifications to achieve equivalent performance characteristics.

Q: What are the key performance differences between these devices?

A: The LT1254CS#PBF provides higher slew rate (250V/µs versus 180V/µs) and expanded supply voltage range (4V to 28V single-supply versus 5V to 12V). The EL5455ISZ delivers higher output current per channel (105 mA versus 55 mA). Both devices maintain identical -3dB bandwidth of 270 MHz and 4-circuit configuration.

Q: Are there supply voltage compatibility concerns?

A: The EL5455ISZ operates within 5V to 12V supply range. The LT1254CS#PBF supports 4V to 28V single-supply operation, encompassing the original device range. Applications operating at the lower boundary (5V) are compatible with both devices. Applications requiring operation below 5V are limited to the LT1254CS#PBF.

Q: How does the feedback topology difference affect circuit design?

A: Voltage feedback amplifiers (EL5455ISZ) and current feedback amplifiers (LT1254CS#PBF) exhibit different frequency response and impedance characteristics. Current feedback designs typically require transimpedance feedback networks rather than resistive feedback. Circuit compensation and stability analysis must be performed for the specific application topology.

Q: What is the significance of the MSL rating difference?

A: The EL5455ISZ carries MSL rating of 3 (168 Hours), requiring controlled moisture exposure during storage and manufacturing. The LT1254CS#PBF carries MSL rating of 1 (Unlimited), eliminating moisture sensitivity constraints. This difference impacts component handling procedures and storage requirements.

Q: Are both devices compliant with current regulatory standards?

A: Both the EL5455ISZ and LT1254CS#PBF maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements for electronic component procurement in regulated markets.

Q: What is the availability status of each device?

A: The EL5455ISZ is classified as obsolete with 998 pieces in current inventory. The LT1254CS#PBF is an active product with 1527 pieces in current inventory, providing long-term supply chain availability and production continuity.