MPC9449AE Equivalent & Substitute Parts

Part Overview

The MPC9449AE is a Clock Fanout Buffer (Distribution), Divider, Multiplexer IC manufactured by Renesas Electronics Corporation. This device features a 3:15 input-to-output ratio with a maximum frequency of 200 MHz and operates across a supply voltage range of 2.375V to 3.465V. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

MPC9449AE

Renesas Electronics CorporationIn Stock: 3218MPC9449AE Datasheet

Current PartRFQ

87949AYILF

Renesas Electronics CorporationIn Stock: 109887949AYILF Datasheet

MFR RecommendedRFQ

8T49N285A-999NLGI

Renesas Electronics CorporationIn Stock: 12518T49N285A-999NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPC9449AE is determined by the following critical parameters:

• Input-to-output ratio (3:15)
• Maximum operating frequency (200 MHz minimum capability)
• Input signal types (LVCMOS, LVPECL compatibility)
• Output signal type (LVCMOS)
• Supply voltage range (2.375V ~ 3.465V)
• Package form factor (52-LQFP)
• Operating temperature range (-40°C ~ 85°C)

The identified substitute parts maintain compatibility across these core electrical and mechanical specifications, enabling direct functional replacement in clock distribution and timing applications.

Parameter Comparison

Engineering Selection Recommendations

87949AYILF: This substitute maintains the identical 3:15 input-to-output ratio and 52-LQFP package form factor. However, the maximum frequency specification of 160 MHz falls below the MPC9449AE's 200 MHz capability. The supply voltage range (3V ~ 3.6V) is narrower than the original part. This part is also classified as obsolete. Selection of this substitute is appropriate only when application frequency requirements do not exceed 160 MHz and supply voltage remains within the 3V ~ 3.6V window.

8T49N285A-999NLGI: This substitute is currently in active product status, providing long-term availability and supply chain stability. The device supports the full supply voltage range of the original part (2.375V ~ 3.465V) and offers significantly higher maximum frequency capability (1 GHz). However, the input-to-output ratio differs at 3:8 versus the original 3:15 specification. The package form factor changes from 52-LQFP to 56-VFQFN Exposed Pad, requiring PCB layout modifications. This part includes PLL with bypass functionality and supports differential output (LVPECL, LVDS), providing enhanced flexibility for advanced timing applications. RoHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the 87949AYILF directly replace the MPC9449AE in all applications?

A: The 87949AYILF maintains the same input-to-output ratio (3:15) and package (52-LQFP), enabling direct PCB replacement. However, the maximum frequency specification of 160 MHz is lower than the MPC9449AE's 200 MHz rating. Substitution is valid only when application frequency requirements do not exceed 160 MHz. Additionally, the supply voltage range is narrower (3V ~ 3.6V versus 2.375V ~ 3.465V).

Q: What are the key differences between the 8T49N285A-999NLGI and the MPC9449AE?

A: The 8T49N285A-999NLGI offers active product status, higher frequency capability (1 GHz), and full supply voltage compatibility (2.375V ~ 3.465V). The input-to-output ratio differs (3:8 versus 3:15), and the package changes from 52-LQFP to 56-VFQFN Exposed Pad. This substitute is suitable for applications requiring higher frequency operation and long-term supply availability, provided the different output channel count and package form factor are accommodated in the design.

Q: Why is package form factor important when selecting a substitute?

A: Package form factor determines PCB footprint, signal integrity characteristics, and thermal performance. The MPC9449AE uses 52-LQFP, while the 8T49N285A-999NLGI uses 56-VFQFN Exposed Pad. Changing packages requires PCB redesign, including trace routing, via placement, and thermal management modifications. The 87949AYILF maintains the 52-LQFP package, allowing direct PCB substitution without layout changes.

Q: What does the input-to-output ratio mean for substitution?

A: The input-to-output ratio specifies the number of output clock signals generated from the input clock signal(s). The MPC9449AE provides 15 output channels from 3 inputs (3:15 ratio). The 87949AYILF maintains this ratio, while the 8T49N285A-999NLGI provides 8 outputs from 3 inputs (3:8 ratio). Applications requiring all 15 output channels must use parts with matching or higher output channel counts.

Q: Are there supply chain or availability considerations for these substitutes?

A: Both the MPC9449AE and 87949AYILF are classified as obsolete products. The 8T49N285A-999NLGI maintains active product status, ensuring ongoing manufacturing and supply availability. For new designs or long-term production requirements, the 8T49N285A-999NLGI is the preferred choice from a supply chain perspective.

Q: How do moisture sensitivity levels affect handling and storage?

A: The MPC9449AE has MSL 2 (1 Year), while both substitute parts have MSL 3 (168 Hours). Lower MSL ratings allow longer shelf life before moisture absorption becomes critical. MSL 3 components require more stringent moisture control during storage and handling, with a maximum floor life of 168 hours after bag opening before reflow soldering must occur.