X4323S8I-2.7 Equivalent & Substitute Parts

Part Overview

The X4323S8I-2.7 is a supervisor integrated circuit manufactured by Renesas Electronics Corporation, designed for power management applications. This device functions as a simple reset/power-on reset controller with open drain or open collector output, monitoring a single voltage channel at a 2.62V threshold. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

X4323S8I-2.7

Renesas Electronics CorporationIn Stock: 1191X4323S8I-2.7 Datasheet

Current PartRFQ

X5043S8IZ-2.7

Renesas Electronics CorporationIn Stock: 1980X5043S8IZ-2.7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the X4323S8I-2.7 is determined by strict equivalence across the following critical parameters:

• Voltage Monitoring Channels: 1 channel (single voltage supervision)
• Voltage Threshold: 2.62V (exact match required)
• Output Configuration: Open Drain or Open Collector
• Reset Logic: Active Low
• Reset Timeout: 100ms Minimum
• Package Type: 8-SOIC form factor
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount

The X5043S8IZ-2.7 meets all these electrical and mechanical parameters, establishing it as a parametric equivalent. Differences in product status and compliance certifications do not affect functional interchangeability in applications where the original part specifications are required.

Parameter Comparison

Engineering Selection Recommendations

The X5043S8IZ-2.7 is the parametric equivalent for the obsolete X4323S8I-2.7. Both parts share identical electrical specifications and package form factors, ensuring direct functional replacement in existing circuit designs.

The X5043S8IZ-2.7 carries a "Not For New Designs" status and achieves ROHS3 compliance, whereas the original X4323S8I-2.7 is classified as obsolete and RoHS non-compliant. For applications requiring RoHS compliance or long-term component availability, the X5043S8IZ-2.7 provides superior compliance posture while maintaining full electrical and mechanical compatibility.

Both parts maintain identical REACH and ECCN classifications, with unlimited moisture sensitivity tolerance (MSL 1). Selection between these parts should be based on compliance requirements and component availability rather than functional performance.

Frequently Asked Questions (FAQ)

Q: Can the X5043S8IZ-2.7 directly replace the X4323S8I-2.7 in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters: single-channel voltage supervision at 2.62V threshold, active-low reset output, 100ms minimum reset timeout, and identical 8-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between the two part numbers?

A: The X4323S8I-2.7 and X5043S8IZ-2.7 differ in product lifecycle status and compliance certification. The X4323S8I-2.7 is obsolete and RoHS non-compliant, while the X5043S8IZ-2.7 is designated "Not For New Designs" and achieves ROHS3 compliance. Functionally, they are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pin configurations. PCB layouts and component footprints require no modification.

Q: Which part should be selected for new applications?

A: Selection depends on compliance requirements. The X5043S8IZ-2.7 offers ROHS3 compliance and better long-term availability. However, both parts are classified as not recommended for new designs, indicating that alternative supervisor ICs from current product lines may be more appropriate for new development.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the -40°C ~ 85°C (TA) temperature range with identical electrical performance across this range.