FIN24ACGFX Equivalent & Substitute Parts

Part Overview

The FIN24ACGFX is a 520Mbps Serializer/Deserializer interface IC manufactured by onsemi, housed in a 42-USS-BGA (4.6x4.5) package. This component features 22/1 input and 1/22 output configuration with LVCMOS signal levels, operating across a 1.65V to 3.6V supply range. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Key Parameters

Parameter	FIN24ACGFX
Manufacturer	onsemi
Function	Serializer/Deserializer
Data Rate	520Mbps
Input Type	LVCMOS
Output Type	LVCMOS
Number of Inputs	22/1
Number of Outputs	1/22
Voltage Supply	1.65V ~ 3.6V
Operating Temperature	-30°C ~ 70°C
Package Type	42-VFBGA
Product Status	Obsolete
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the FIN24ACGFX is determined by the following critical parameters:

Function: Serializer/Deserializer capability
Data Rate: Minimum 520Mbps operational speed
Input/Output Configuration: Support for multi-channel serialization and deserialization
Signal Levels: LVCMOS input compatibility
Supply Voltage: Overlap within the 1.65V to 3.6V range
Operating Temperature Range: Coverage of the -30°C to 70°C specification
Package Compatibility: Physical and electrical compatibility with system integration requirements

The DS90C241IVS/NOPB qualifies as a substitute based on its serializer/deserializer functionality, superior data rate capability (840Mbps), compatible LVCMOS input interface, and overlapping supply voltage range (3V to 3.6V). While package form factor differs (48-TQFP versus 42-VFBGA), the electrical parameters support functional equivalence in applications where physical constraints permit package substitution.

Parameter Comparison

Parameter	FIN24ACGFX	DS90C241IVS/NOPB
Manufacturer	onsemi	Texas Instruments
Function	Serializer/Deserializer	Serializer
Data Rate	520Mbps	840Mbps
Input Type	LVCMOS	LVCMOS
Output Type	LVCMOS	FPD-Link, LVDS
Number of Inputs	22/1	24
Number of Outputs	1/22	1
Voltage Supply Range	1.65V ~ 3.6V	3V ~ 3.6V
Operating Temperature	-30°C ~ 70°C	-40°C ~ 105°C
Package Type	42-VFBGA	48-TQFP
Product Status	Obsolete	Active
Moisture Sensitivity Level	MSL 1	MSL 3
Qualification	-	AEC-Q100

Engineering Selection Recommendations

The DS90C241IVS/NOPB presents a viable substitute for the obsolete FIN24ACGFX based on active product status and established supply chain availability. The substitute offers enhanced data rate performance (840Mbps versus 520Mbps) and extended operating temperature range (-40°C to 105°C versus -30°C to 70°C), providing design margin for demanding applications.

Key considerations for selection:

Supply Voltage Compatibility: The DS90C241IVS/NOPB operates within 3V to 3.6V, which overlaps the FIN24ACGFX range but does not extend to the lower 1.65V specification. Designs requiring sub-3V operation require alternative evaluation.
Package Transition: Migration from 42-VFBGA to 48-TQFP requires PCB layout redesign and mechanical accommodation verification.
Output Interface: The substitute provides FPD-Link and LVDS output options in addition to LVCMOS, enabling flexible system integration.
Automotive Qualification: AEC-Q100 certification of the DS90C241IVS/NOPB supports automotive and high-reliability applications.
Moisture Sensitivity: MSL 3 rating requires controlled storage and handling procedures compared to the MSL 1 rating of the original part.

Frequently Asked Questions (FAQ)

Q: Can the DS90C241IVS/NOPB directly replace the FIN24ACGFX without design modifications?

A: Electrical substitution is feasible within the overlapping supply voltage range (3V to 3.6V). However, package form factor differences (48-TQFP versus 42-VFBGA) necessitate PCB layout redesign. Pin-to-pin functional mapping must be verified against specific application requirements.

Q: What is the impact of the lower supply voltage limit on the DS90C241IVS/NOPB?

A: The DS90C241IVS/NOPB minimum supply voltage is 3V, whereas the FIN24ACGFX operates from 1.65V. Applications requiring operation below 3V cannot use this substitute without additional voltage regulation or alternative component selection.

Q: How does the higher data rate of the DS90C241IVS/NOPB affect system compatibility?

A: The 840Mbps capability of the DS90C241IVS/NOPB exceeds the 520Mbps specification of the FIN24ACGFX, providing backward compatibility for existing data rate requirements. System timing and signal integrity analysis should confirm adequate performance margins.

Q: What are the implications of MSL 3 versus MSL 1 moisture sensitivity?

A: MSL 3 classification limits shelf life to 168 hours after moisture exposure, compared to unlimited storage for MSL 1 parts. Procurement and inventory management procedures must incorporate controlled humidity storage and reduced lead times to prevent moisture absorption.

Q: Does the AEC-Q100 qualification of the DS90C241IVS/NOPB provide additional assurance?

A: AEC-Q100 certification indicates compliance with automotive reliability and qualification standards, including temperature cycling, thermal shock, and electrostatic discharge testing. This qualification supports applications in automotive and mission-critical environments.

Q: Are there functional differences between serializer-only and serializer/deserializer configurations?

A: The DS90C241IVS/NOPB functions as a serializer (24 inputs to 1 output), whereas the FIN24ACGFX provides bidirectional serializer/deserializer capability (22/1 inputs and 1/22 outputs). Applications requiring deserialization functionality must evaluate alternative components or implement external deserialization logic.

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