CDCVF111FNG4 Equivalent & Substitute Parts

Part Overview

The CDCVF111FNG4 is a Clock Fanout Buffer (Distribution) IC manufactured by Texas Instruments, designed for 1:9 clock distribution at frequencies up to 650 MHz. This device features LVPECL differential input and output, operates across a 3V to 3.6V supply range, and is housed in a 28-LCC (J-Lead) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

CDCVF111FNG4

Texas InstrumentsIn Stock: 899CDCVF111FNG4 Datasheet

Current PartRFQ

CDCVF111FN

Texas InstrumentsIn Stock: 1475CDCVF111FN Datasheet

MFR RecommendedRFQ

MC100LVE111FNG

onsemiIn Stock: 1353MC100LVE111FNG Datasheet

MFR RecommendedRFQ

MC100LVE111FNR2G

onsemiIn Stock: 2124MC100LVE111FNR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDCVF111FNG4 is determined by the following critical parameters:

• Package / Case: Must be 28-LCC (J-Lead) with identical physical dimensions (11.51x11.51 mm)
• Ratio - Input:Output: Must maintain 1:9 distribution
• Differential Input/Output: Must support differential signaling on both input and output
• Operating Temperature Range: Must cover -40°C to 85°C minimum
• Supply Voltage Compatibility: Must operate within or encompass the 3V to 3.6V range
• Signal Compatibility: Input and output signal types must be compatible with LVPECL or ECL/PECL standards

The CDCVF111FN (Texas Instruments) is a direct substitute with identical electrical specifications and active product status. The MC100LVE111FNG and MC100LVE111FNR2G (onsemi) are functionally compatible alternatives with enhanced frequency capability (1.5 GHz) and broader supply voltage range (3V to 3.8V), though both are obsolete products.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CDCVF111FN

The CDCVF111FN is the preferred substitute for CDCVF111FNG4 replacement. Both parts are manufactured by Texas Instruments with identical electrical specifications, package dimensions, and operating parameters. The CDCVF111FN maintains active product status, ensuring long-term availability and supply chain stability. Both parts carry ROHS3 compliance and MSL-1 rating, indicating superior moisture handling characteristics. The only difference is packaging format (Tube vs. standard packaging), which does not affect electrical performance or board-level compatibility.

Secondary Alternatives: MC100LVE111FNG and MC100LVE111FNR2G

The onsemi MC100LVE111FNG and MC100LVE111FNR2G are functionally compatible alternatives that offer enhanced frequency capability (1.5 GHz vs. 650 MHz) and extended supply voltage range (3V to 3.8V). These parts maintain identical 1:9 distribution ratio, package form factor, and operating temperature range. However, both are classified as obsolete products. The MC100LVE111FNG is supplied in Tube packaging, while MC100LVE111FNR2G is supplied in Tape & Reel format. Both carry MSL-3 rating, requiring stricter moisture control during storage and handling compared to the MSL-1 rated Texas Instruments alternatives.

Selection between these alternatives should prioritize CDCVF111FN for new designs and ongoing production due to active status and superior moisture sensitivity rating. The onsemi alternatives are suitable only where existing inventory exists or where the enhanced 1.5 GHz capability provides system-level advantages that justify the obsolete product status and increased moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can CDCVF111FN directly replace CDCVF111FNG4 without circuit modifications?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, package dimensions (28-LCC, 11.51x11.51 mm), pin configurations, and operating parameters. No circuit modifications are required for direct substitution.

Q: What is the difference between CDCVF111FNG4 and CDCVF111FN?

A: The primary difference is packaging format. CDCVF111FNG4 uses standard packaging while CDCVF111FN is supplied in Tube format. Electrical specifications and performance are identical. Both maintain ROHS3 compliance and MSL-1 moisture sensitivity rating.

Q: Are the onsemi MC100LVE111 parts suitable replacements?

A: The MC100LVE111FNG and MC100LVE111FNR2G are functionally compatible alternatives with identical 1:9 distribution ratio and package form factor. However, both are obsolete products. They offer higher frequency capability (1.5 GHz) and extended supply voltage range (3V to 3.8V), but require stricter moisture handling (MSL-3 vs. MSL-1). Use only if existing inventory is available or if the enhanced frequency capability is required.

Q: What does MSL-1 vs. MSL-3 mean for component handling?

A: MSL (Moisture Sensitivity Level) indicates moisture absorption and reflow requirements. MSL-1 (Unlimited) allows indefinite shelf life without moisture control. MSL-3 (168 Hours) requires components to be used within 168 hours of package opening or requires baking to remove absorbed moisture before reflow. Texas Instruments parts (MSL-1) offer superior handling flexibility compared to onsemi alternatives (MSL-3).

Q: Can I use MC100LVE111FNR2G in Tape & Reel format instead of MC100LVE111FNG in Tube format?

A: Yes. Both parts are electrically identical. The difference is packaging format only. MC100LVE111FNR2G in Tape & Reel is suitable for automated assembly processes, while MC100LVE111FNG in Tube format is suitable for manual or lower-volume assembly. Select based on assembly process requirements, not electrical performance.

Q: Why is CDCVF111FN recommended over the onsemi alternatives despite higher frequency capability?

A: CDCVF111FN is recommended because it maintains active product status, ensuring long-term availability and supply chain continuity. It also carries MSL-1 rating, eliminating moisture handling complexity. The onsemi alternatives are obsolete, creating future supply risk. The 650 MHz frequency of CDCVF111FN is sufficient for the original CDCVF111FNG4 application. Use onsemi parts only if the enhanced 1.5 GHz capability provides specific system-level advantages that justify obsolete product status.