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PI3EQX1002BZLEX
Electronics Part Number
PI3EQX1002BZLEX-WXManufacturer
Skyworks Solutions
PI3EQX1002BZLEX
Description
USB 3.1 Gen-2 Redriver IC, 30-TQFN PackageInventory
857 Pcs New Original In Stock
"4-channel 13.5Gbps buffer/reDriver, 40-TQFN (3x6). Superior signal regeneration and equalization. Enables high-speed PCIe, USB, and display links.",
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Technical Specifications
Category
Interface, Modems - ICs and Modules
Manufacturer
Skyworks Solutions
Packaging
Tube
Mounting Type
Surface Mount
Package / Case
24-TSSOP (0.173", 4.40mm Width)
Series
ISOmodem®
Base Product Number
SI2434
Product Status
Not For New Designs
Voltage - Supply
3V ~ 3.6V
Supplier Device Package
24-TSSOP
Data Format
V.21, V.22, V.23, V.29, V.32, V.34, Bell 103, Bell 212A
Baud Rates
33.6k
Data Sheet Document (D)
Datasheets
Download SI2434-C-FT Product Specification (PDF)
HTML Datasheet
SI2434-C-FT-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
3 (168 Hours)
ECCN
5A991B2
HTSUS
8542.39.0001
Additional Information
Standard Package
62
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Frequently Asked Questions (FAQ)
What are the key risks when replacing the SI2434-C-FT with the SI2434-D-FT in an existing industrial
The SI2434-D-FT is a newer revision of the SI2434-C-FT, but despite functional similarity, subtle differences in power sequencing, reset timing, or internal calibration algorithms may affect system startup in noise-sensitive environments. Since the SI2434-C-FT is marked 'Not For New Designs,' migration may be necessary, but you must revalidate signal integrity on the analog front-end and confirm that the D-variant’s updated firmware doesn’t alter handshake behavior under low SNR conditions. Always test with real-world line simulators and conduct extended burn-in testing to catch latent initialization failures.
Can the SI2434-C-FT be safely used in a 5V-tolerant system without level shifting, given its 3.0–3.6
No, the SI2434-C-FT is not 5V-tolerant on its I/O pins, and applying 5V logic directly risks damaging the internal ESD structures and causing long-term reliability degradation. Even if the system appears functional initially, oxide stress from overvoltage can lead to premature failure. Use a dedicated 3.3V regulator and level translators (e.g., TXB0108) for any interface signals above 3.6V. This is especially critical for UART or control lines connected to a 5V microcontroller.
How does the SI2434-C-FT handle line echo and hybrid imbalance in long-loop PSTN applications, and w
The SI2434-C-FT includes built-in adaptive echo cancellation compliant with V.34 standards, but performance degrades significantly on lines exceeding 6 dB of hybrid imbalance or with loop resistances above 1.8 kΩ. To maintain reliable 33.6kbps operation, ensure your transformer-based isolation circuit uses a high-imbalance-tolerance hybrid (e.g., 1:2.78 ratio with >40 dB return loss) and minimize parasitic capacitance on the TIP/RING lines. Adding a passive RC network across the line can help stabilize the hybrid balance under variable load conditions.
Is it safe to operate the SI2434-C-FT near its maximum MSL-3 exposure limit during high-volume SMT a
The SI2434-C-FT’s MSL-3 rating allows 168 hours of floor life after dry-pack opening, but exceeding this without proper baking increases the risk of popcorning during reflow, especially in humid environments. More insidiously, moisture absorption can lead to microcracks in the 24-TSSOP package over thermal cycles, causing intermittent failures in field deployments. Always track exposure time using FIFO protocols, and if the tube has been open >168 hours, bake at 125°C for 24 hours per J-STD-033 to prevent latent defects.
What are the trade-offs of using the SI2434-C-FT versus a modern software-defined modem solution lik
While the SI2434-C-FT offers a fully integrated, hardware-based V.34 modem with minimal external components—ideal for deterministic timing and low CPU overhead—it consumes more power (~120 mW active) and lacks flexibility for protocol updates. In contrast, the CMX908 uses DSP-based modulation, enabling multi-standard support and lower idle power, but requires a host MCU and careful RF layout. For battery-powered telemetry, the CMX908 may be preferable if you can manage software complexity; however, if you need plug-and-play PSTN compliance with minimal firmware effort and can accept higher power draw, the SI2434-C-FT remains viable—but only in legacy-support scenarios due to its 'Not For New Designs' status.
What are the key risks when replacing the SI2434-C-FT with the SI2434-D-FT in an existing industrial
The SI2434-D-FT is a newer revision of the SI2434-C-FT, but despite functional similarity, subtle differences in power sequencing, reset timing, or internal calibration algorithms may affect system startup in noise-sensitive environments. Since the SI2434-C-FT is marked 'Not For New Designs,' migration may be necessary, but you must revalidate signal integrity on the analog front-end and confirm that the D-variant’s updated firmware doesn’t alter handshake behavior under low SNR conditions. Always test with real-world line simulators and conduct extended burn-in testing to catch latent initialization failures.
Can the SI2434-C-FT be safely used in a 5V-tolerant system without level shifting, given its 3.0–3.6
No, the SI2434-C-FT is not 5V-tolerant on its I/O pins, and applying 5V logic directly risks damaging the internal ESD structures and causing long-term reliability degradation. Even if the system appears functional initially, oxide stress from overvoltage can lead to premature failure. Use a dedicated 3.3V regulator and level translators (e.g., TXB0108) for any interface signals above 3.6V. This is especially critical for UART or control lines connected to a 5V microcontroller.
How does the SI2434-C-FT handle line echo and hybrid imbalance in long-loop PSTN applications, and w
The SI2434-C-FT includes built-in adaptive echo cancellation compliant with V.34 standards, but performance degrades significantly on lines exceeding 6 dB of hybrid imbalance or with loop resistances above 1.8 kΩ. To maintain reliable 33.6kbps operation, ensure your transformer-based isolation circuit uses a high-imbalance-tolerance hybrid (e.g., 1:2.78 ratio with >40 dB return loss) and minimize parasitic capacitance on the TIP/RING lines. Adding a passive RC network across the line can help stabilize the hybrid balance under variable load conditions.
Is it safe to operate the SI2434-C-FT near its maximum MSL-3 exposure limit during high-volume SMT a
The SI2434-C-FT’s MSL-3 rating allows 168 hours of floor life after dry-pack opening, but exceeding this without proper baking increases the risk of popcorning during reflow, especially in humid environments. More insidiously, moisture absorption can lead to microcracks in the 24-TSSOP package over thermal cycles, causing intermittent failures in field deployments. Always track exposure time using FIFO protocols, and if the tube has been open >168 hours, bake at 125°C for 24 hours per J-STD-033 to prevent latent defects.
What are the trade-offs of using the SI2434-C-FT versus a modern software-defined modem solution lik
While the SI2434-C-FT offers a fully integrated, hardware-based V.34 modem with minimal external components—ideal for deterministic timing and low CPU overhead—it consumes more power (~120 mW active) and lacks flexibility for protocol updates. In contrast, the CMX908 uses DSP-based modulation, enabling multi-standard support and lower idle power, but requires a host MCU and careful RF layout. For battery-powered telemetry, the CMX908 may be preferable if you can manage software complexity; however, if you need plug-and-play PSTN compliance with minimal firmware effort and can accept higher power draw, the SI2434-C-FT remains viable—but only in legacy-support scenarios due to its 'Not For New Designs' status.
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Sep 15 2026
