Equivalent & Substitute Parts for 840004BGILF

Part Overview

The 840004BGILF is a Frequency Synthesizer IC manufactured by Renesas Electronics Corporation, designed for clock and timing applications. This device operates at a maximum frequency of 159.375MHz and is housed in a 20-TSSOP package. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing system support and new design implementations. The FemtoClock® series architecture provides PLL functionality with bypass capability, supporting LVCMOS, LVTTL, and crystal inputs with LVCMOS and LVTTL outputs.

Substiute Parts

840004BGILF

Renesas Electronics CorporationIn Stock: 772840004BGILF Datasheet

Current PartRFQ

8T49N241-998NLGI

Renesas Electronics CorporationIn Stock: 35878T49N241-998NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 840004BGILF is determined by the following critical parameters:

• Supply voltage compatibility: 2.375V ~ 3.465V
• Operating temperature range: -40°C ~ 85°C
• PLL with bypass functionality
• Input signal compatibility: LVCMOS, LVTTL, or Crystal
• Output signal compatibility: LVCMOS or LVTTL
• Single circuit configuration
• Surface mount technology

The substitute part 8T49N241-998NLGI meets these core electrical and functional requirements while offering enhanced capabilities. This part maintains voltage and temperature specifications, preserves PLL with bypass architecture, and supports the required input/output signal types. The substitute operates at a higher maximum frequency (1GHz) and provides expanded input/output options, making it suitable for applications requiring the 840004BGILF functionality.

Parameter Comparison

Engineering Selection Recommendations

The 8T49N241-998NLGI is the manufacturer-recommended substitute for the obsolete 840004BGILF. Both devices are manufactured by Renesas Electronics Corporation and maintain identical supply voltage and operating temperature specifications. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The 8T49N241-998NLGI operates within the same electrical parameters as the 840004BGILF and provides backward compatibility for core functionality. The substitute features ROHS3 compliance, supporting modern environmental and regulatory requirements. The higher maximum frequency capability (1GHz versus 159.375MHz) and expanded input/output signal options provide design flexibility for current and future applications.

Package differences exist between the two parts: the 840004BGILF uses a 20-TSSOP package while the 8T49N241-998NLGI uses a 40-VFQFN package. PCB layout modifications are required for physical integration of the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the 8T49N241-998NLGI directly replace the 840004BGILF without design changes?

A: Electrical compatibility is maintained across supply voltage, operating temperature, and core PLL functionality. However, the package change from 20-TSSOP to 40-VFQFN requires PCB layout redesign. Pin-to-pin compatibility must be verified against specific application requirements and signal routing.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), maximum frequency capability (159.375MHz versus 1GHz), package type (20-TSSOP versus 40-VFQFN), and expanded input/output signal options in the substitute. Both maintain identical supply voltage and temperature ranges.

Q: Is the 8T49N241-998NLGI suitable for applications originally designed for the 840004BGILF?

A: Yes, provided that the application requirements do not exceed the electrical specifications of the 840004BGILF. The substitute's higher frequency capability and expanded signal options do not create incompatibility with lower-frequency applications. PCB layout modifications are necessary due to package differences.

Q: What is the moisture sensitivity level difference between these parts?

A: The 840004BGILF has MSL 1 (Unlimited), while the 8T49N241-998NLGI has MSL 3 (168 Hours). This affects handling and storage requirements. The substitute requires more stringent moisture control during storage and assembly processes.

Q: Are both parts REACH compliant?

A: Yes, both the 840004BGILF and 8T49N241-998NLGI are REACH Unaffected. The substitute additionally meets ROHS3 compliance standards, supporting current environmental regulations.