SI2434-C-FTR Equivalent & Substitute Parts

Part Overview

The SI2434-C-FTR is a 33.6k modem interface IC manufactured by Skyworks Solutions Inc., designed for system-side applications supporting multiple modem standards including V.21, V.22, V.23, V.29, V.32, V.34, Bell 103, and Bell 212A protocols. This component is classified as Not For New Designs, indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for legacy system maintenance, repair operations, and continued support of existing installations that depend on this modem interface technology.

Substiute Parts

SI2434-C-FTR

Skyworks Solutions Inc.In Stock: 4827SI2434-C-FTR Datasheet

Current PartRFQ

SI2434-D-FTR

Skyworks Solutions Inc.In Stock: 740SI2434-D-FTR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI2434-C-FTR is determined by strict alignment of the following critical parameters:

• Baud Rate Capability: Must support 33.6k modem operation
• Data Format Compatibility: Must support V.21, V.22, V.23, V.29, V.32, V.34, Bell 103, and Bell 212A protocols
• Voltage Supply Range: Must operate within 3V ~ 3.6V specification
• Package Configuration: Must use 24-TSSOP surface mount package with identical 0.173" (4.40mm) width
• Moisture Sensitivity Level: Must maintain MSL 3 rating (168 Hours)
• Manufacturer Series: Must belong to Skyworks Solutions Inc. ISOmodem® product line

The SI2434-D-FTR meets all substitution criteria as a direct equivalent from the same manufacturer and product series, with identical electrical specifications and physical packaging.

Parameter Comparison

Engineering Selection Recommendations

The SI2434-D-FTR is the qualified substitute for SI2434-C-FTR applications. Both components share identical electrical specifications, package geometry, and modem protocol support. The primary distinction is product lifecycle status: SI2434-C-FTR is designated Not For New Designs, while SI2434-D-FTR maintains Active status with current manufacturing support. For legacy system repairs and maintenance requiring component replacement, SI2434-D-FTR provides functional equivalence with the advantage of ongoing supplier availability. Both parts carry identical ECCN (5A991B2) and HTSUS (8542.39.0001) classifications, ensuring regulatory compliance consistency.

Frequently Asked Questions (FAQ)

Q: Can SI2434-D-FTR directly replace SI2434-C-FTR in existing designs?

A: Yes. Both parts are pin-compatible, electrically equivalent, and housed in identical 24-TSSOP packages. No circuit modifications are required for substitution.

Q: What is the difference between SI2434-C-FTR and SI2434-D-FTR?

A: The components are functionally identical. The primary difference is product status: SI2434-C-FTR is Not For New Designs, while SI2434-D-FTR is Active. The suffix letter (C vs. D) indicates manufacturing revision or production batch designation.

Q: Are the modem protocol capabilities identical between these parts?

A: Both support V.21, V.22, V.23, V.29, V.32, Bell 103, and Bell 212A protocols at 33.6k baud rate. SI2434-C-FTR additionally lists V.34 support in its specification; verify protocol requirements for your specific application.

Q: What is the moisture sensitivity level, and does it affect storage?

A: Both parts carry MSL 3 rating with 168-hour floor life. Components must be stored in controlled humidity environments and handled according to IPC-A-610 standards for surface mount devices.

Q: Can these parts be used interchangeably in production?

A: Yes, for legacy system maintenance and repair. For new production, SI2434-D-FTR is the appropriate choice due to its Active product status and current manufacturing support.