SY10E111LEJZ Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The SY10E111LEJZ is a Clock Fanout Buffer (Distribution) IC manufactured by Microchip Technology, featuring a 1:9 input-to-output ratio with differential PECL signaling. This device is classified as Obsolete, making substitute parts necessary for new designs and ongoing production requirements. The 28-LCC (J-Lead) package and PECL signal compatibility define the primary substitution criteria for this clock distribution application.

Substiute Parts

SY10E111LEJZ

Microchip TechnologyIn Stock: 1224SY10E111LEJZ Datasheet

Current PartRFQ

CDC111FN

Texas InstrumentsIn Stock: 2225CDC111FN Datasheet

MFR RecommendedRFQ

MC100E111FNG

onsemiIn Stock: 36191MC100E111FNG Datasheet

MFR RecommendedRFQ

MC100E111FNR2G

onsemiIn Stock: 2383MC100E111FNR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SY10E111LEJZ are selected based on the following critical parameters that must align for functional compatibility:

Core Substitution Criteria:

• Fanout Buffer (Distribution) type with 1:9 input-to-output ratio
• Differential input and output configuration
• 28-LCC (J-Lead) package form factor
• PECL or LVPECL signal compatibility
• Surface mount technology
• ROHS3 compliance

The three qualified substitute parts meet these criteria with variations in frequency capability, supply voltage range, and operating temperature specifications. These variations determine suitability for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

CDC111FN (Texas Instruments) is the only substitute with Active product status, providing long-term availability and manufacturing support. This part operates at 500 MHz maximum frequency with a narrower supply voltage range (3V ~ 3.6V) and reduced operating temperature range (0°C ~ 70°C) compared to the original. The LVPECL signal compatibility maintains differential signaling integrity. MSL rating of 1 provides superior moisture protection for storage and handling.

MC100E111FNG and MC100E111FNR2G (onsemi) are both Obsolete products from the same 100E series as the original part. Both support 800 MHz maximum frequency with extended operating temperature range (-40°C ~ 85°C) and broader supply voltage range (4.2V ~ 5.7V). These parts accept ECL and PECL inputs and outputs, providing broader signal compatibility. MSL rating of 3 requires stricter moisture control during storage.

Selection between these substitutes depends on application frequency requirements, supply voltage constraints, and temperature operating range specifications. The CDC111FN is preferred for new designs requiring long-term component availability. The onsemi parts are suitable for applications requiring higher frequency operation or extended temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can CDC111FN replace SY10E111LEJZ in all applications?

A: CDC111FN maintains the 1:9 fanout ratio, differential PECL/LVPECL signaling, and 28-LCC package compatibility. However, verify that your application operates within CDC111FN's supply voltage range (3V ~ 3.6V) and temperature range (0°C ~ 70°C). The original part supports 3V ~ 5.5V and 0°C ~ 85°C.

Q: What is the difference between PECL and LVPECL signaling?

A: Both are differential signaling standards. LVPECL (Low Voltage PECL) operates at lower voltage levels than standard PECL. CDC111FN uses LVPECL, while the original and onsemi substitutes support PECL. Verify signal compatibility with your system design.

Q: Are the onsemi parts (MC100E111FNG and MC100E111FNR2G) interchangeable?

A: Both onsemi parts share identical electrical specifications, including 800 MHz maximum frequency, 4.2V ~ 5.7V supply voltage, and -40°C ~ 85°C operating temperature. The primary difference is packaging designation. Both are Obsolete products.

Q: Does the 28-LCC package dimension variation affect PCB layout?

A: The supplier device packages are 28-PLCC (11.48x11.48 mm) for the original and (11.51x11.51 mm) for substitutes. This 0.03 mm variation is negligible for standard PCB design and does not require layout modifications.

Q: What does MSL rating mean for component storage?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be stored in standard conditions before requiring baking. CDC111FN (MSL 1) has unlimited storage. MC100E111FNG and MC100E111FNR2G (MSL 3) require baking if stored beyond 168 hours in standard humidity.