SY89311UMI-TR Equivalent & Substitute Parts

Part Overview

The SY89311UMI-TR is a Clock Fanout Buffer (Distribution) IC manufactured by Microchip Technology, designed for 1:2 clock distribution applications up to 3 GHz. This component supports both ECL and PECL input/output standards with a supply voltage range of 2.375V to 5.5V and operates across the industrial temperature range of -40°C to 85°C. The part is housed in an 8-VFDFN Exposed Pad package (8-MLF®, 2x2mm).

The SY89311UMI-TR is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives for ongoing system designs and maintenance applications. Substitute parts must maintain functional equivalence in clock distribution performance, electrical interface compatibility, and physical form factor.

Substiute Parts

SY89311UMI-TR

Microchip TechnologyIn Stock: 935SY89311UMI-TR Datasheet

Current PartRFQ

SY89311UMG-TR

Microchip TechnologyIn Stock: 1778SY89311UMG-TR Datasheet

Parametric EquivalentRFQ

MC100LVEL11MNR4G

onsemiIn Stock: 1986MC100LVEL11MNR4G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SY89311UMI-TR are identified based on strict parametric equivalence in the following critical areas:

Functional Parameters:

• 1:2 clock distribution ratio
• Differential input and output capability
• ECL and PECL signal standard support
• Maximum frequency operation
• Supply voltage compatibility
• Operating temperature range alignment

Physical Parameters:

• Surface mount technology
• 8-pin package form factor
• 2x2mm footprint compatibility

Packaging Consideration:

• The SY89311UMI-TR is supplied in Tape & Reel (TR) format
• Substitute SY89311UMG-TR is supplied in Cut Tape (CT) & Digi-Reel® format
• Both packaging formats are compatible for component procurement and assembly

The MC100LVEL11MNR4G from onsemi operates at a reduced maximum frequency (1 GHz versus 3 GHz) and has a narrower supply voltage range (3V ~ 3.8V versus 2.375V ~ 5.5V), making it a functional substitute only for applications not requiring the full 3 GHz performance specification.

Parameter Comparison

Engineering Selection Recommendations

SY89311UMG-TR (Parametric Equivalent): This part is the direct parametric equivalent to the SY89311UMI-TR, maintaining identical electrical specifications including 3 GHz maximum frequency and 2.375V to 5.5V supply voltage range. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Discontinued). The SY89311UMG-TR carries ROHS3 compliance, providing improved environmental and regulatory alignment compared to the original part. This is the preferred substitute for applications requiring full 3 GHz performance capability.

MC100LVEL11MNR4G (Functional Substitute): This onsemi part provides functional clock distribution capability with the same 1:2 ratio and differential ECL/PECL support. However, it operates at a maximum frequency of 1 GHz and requires a narrower supply voltage range (3V ~ 3.8V). This part is suitable only for applications where the clock frequency does not exceed 1 GHz and where the supply voltage can be constrained to the 3V to 3.8V window. The MC100LVEL11MNR4G carries ROHS3 compliance and is currently in active production status.

Frequently Asked Questions (FAQ)

Q: Can the SY89311UMG-TR be used as a direct replacement for the SY89311UMI-TR?

A: Yes. The SY89311UMG-TR is a parametric equivalent with identical electrical performance (3 GHz maximum frequency, 2.375V ~ 5.5V supply voltage, 1:2 distribution ratio, ECL/PECL support). The only differences are packaging format and product status. Both parts use the same 8-MLF® (2x2mm) footprint and are pin-compatible.

Q: What are the limitations of the MC100LVEL11MNR4G as a substitute?

A: The MC100LVEL11MNR4G operates at a maximum frequency of 1 GHz, compared to 3 GHz for the SY89311UMI-TR. Additionally, its supply voltage range is restricted to 3V ~ 3.8V, whereas the original part accepts 2.375V ~ 5.5V. Use this part only in applications where clock frequency does not exceed 1 GHz and where the power supply can be maintained within the narrower voltage window.

Q: Are there package compatibility concerns between these substitutes?

A: The SY89311UMI-TR and SY89311UMG-TR both use the 8-MLF® (2x2mm) package and are footprint-compatible. The MC100LVEL11MNR4G uses an 8-DFN (2x2mm) package, which has the same footprint dimensions but may have minor pinout or thermal pad differences. Verify pinout compatibility with the specific application schematic before substitution.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Both are surface mount packaging formats suitable for automated assembly. Tape & Reel (TR) is supplied on continuous carrier tape in reel format. Cut Tape (CT) & Digi-Reel® is supplied in shorter tape segments on a reel. Both formats are compatible with standard pick-and-place assembly equipment. The choice depends on production volume and inventory management requirements.

Q: Does the RoHS compliance difference affect substitution decisions?

A: The SY89311UMI-TR is RoHS non-compliant, while both SY89311UMG-TR and MC100LVEL11MNR4G are ROHS3 compliant. For new designs or applications subject to RoHS regulations, the compliant substitutes are required. For legacy systems or applications without RoHS requirements, the original part may remain acceptable if available inventory exists.

Q: Are all three parts suitable for the -40°C to 85°C operating temperature range?

A: Yes. All three parts are specified for -40°C to 85°C operation, ensuring thermal compatibility across the industrial temperature range.