Renesas Electronics 726ATLF Voltage Controlled Crystal Oscillator (VCXO) - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 726ATLF is a Voltage Controlled Crystal Oscillator (VCXO) integrated circuit in SOT-23-6 surface mount packaging, designed for clock and timing applications requiring crystal-based frequency control. This component operates at a maximum frequency of 36MHz with a supply voltage range of 3.15V to 3.45V and is rated for industrial temperature ranges from 0°C to 70°C.

The 726ATLF has reached obsolete product status. Identifying functionally equivalent substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this oscillator.

Substiute Parts

726ATLF

Renesas Electronics CorporationIn Stock: 1125726ATLF Datasheet

Current PartRFQ

PL500-37TC-R

Microchip TechnologyIn Stock: 928PL500-37TC-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 726ATLF requires evaluation of the following critical parameters that determine functional compatibility:

Package Compatibility: The substitute component must use SOT-23-6 surface mount packaging to ensure mechanical fit and PCB layout compatibility without redesign.

Oscillator Type: The substitute must be a Voltage Controlled Crystal Oscillator (VCXO) with crystal input to maintain the frequency control mechanism and application requirements.

Output Configuration: The substitute must provide CMOS-level output signals compatible with the receiving circuitry.

Supply Voltage Range: The substitute supply voltage range must encompass or be compatible with the 3.15V to 3.45V requirement of the original design.

Operating Temperature Range: The substitute must support the 0°C to 70°C operating temperature specification.

Frequency Capability: The substitute maximum frequency must meet or exceed the 36MHz requirement.

The Microchip Technology PL500-37TC-R meets these substitution criteria while offering extended frequency capability and broader supply voltage tolerance.

Parameter Comparison

Engineering Selection Recommendations

The Microchip Technology PL500-37TC-R is qualified as a direct substitute for the obsolete Renesas Electronics 726ATLF based on the following engineering criteria:

Functional Equivalence: Both components are single-circuit Voltage Controlled Crystal Oscillators with identical input and output signal types, package form factor, and operating temperature specifications.

Supply Voltage Compatibility: The PL500-37TC-R supply voltage range of 2.25V to 3.63V encompasses the original 3.15V to 3.45V specification, ensuring operation within the design's power distribution parameters.

Frequency Capability: The PL500-37TC-R maximum frequency of 130MHz exceeds the 36MHz requirement, providing operational margin and future design flexibility.

Product Status: The PL500-37TC-R maintains active product status with Microchip Technology, ensuring long-term availability, supply chain stability, and continued manufacturer support.

Compliance and Certifications: Both components share identical ECCN (EAR99), HTSUS (8542.39.0001), and Moisture Sensitivity Level (MSL 1) classifications. The PL500-37TC-R carries RoHS3 compliance and REACH unaffected status, meeting modern regulatory requirements.

Packaging: Both components use SOT-23-6 surface mount packaging, eliminating the need for PCB layout modifications or assembly process changes.

Frequently Asked Questions (FAQ)

Q: Can the PL500-37TC-R be used as a direct replacement without PCB modifications?

A: Yes. Both the 726ATLF and PL500-37TC-R use identical SOT-23-6 surface mount packaging with the same pinout configuration and electrical interface requirements. No PCB layout changes are necessary.

Q: What is the significance of the PL500-37TC-R's higher maximum frequency (130MHz vs. 36MHz)?

A: The higher frequency capability of the PL500-37TC-R provides operational margin above the 36MHz requirement. This does not affect compatibility; the component will function correctly at the lower frequency specified in the original design.

Q: Are there any supply voltage considerations when substituting these components?

A: The PL500-37TC-R supply voltage range (2.25V to 3.63V) is broader than the 726ATLF range (3.15V to 3.45V). The substitute will operate correctly within the original design's 3.15V to 3.45V supply specification. Ensure the design's power supply remains within this range.

Q: What is the difference between CMOS and TTL output types listed for the PL500-37TC-R?

A: The PL500-37TC-R supports both CMOS and TTL output configurations. The 726ATLF specifies CMOS output. The substitute component's CMOS output mode is compatible with the original design requirements.

Q: Does the PL500-37TC-R meet the same regulatory and compliance standards?

A: Both components share identical ECCN and HTSUS classifications. The PL500-37TC-R additionally carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements while maintaining compatibility with the original design specifications.

Q: Why is the 726ATLF listed as obsolete?

A: Obsolete status indicates that Renesas Electronics has discontinued manufacturing and support for this component. The PL500-37TC-R, with active product status, ensures continued availability and manufacturer support for new production and maintenance applications.