SI2434-D-FS 33.6 kbps ISOMODEM | Skyworks Solutions
MPN: SI2434-D-FS ✓ NakahandaSI2434-D-FS Ulas
An ISOMODEM is a highly integrated data access arrangement, or DAA, that combines modem signal processing with the analog telephone-line interface. This system-side device belongs to the modem IC category within the broader interface IC and data-communication equipment hierarchy. Integrating the system-side functions into one package reduces the number of external components required for a telephone-line modem or data terminal adapter.
The SI2434-D-FS supports 33.6 kbps operation and the listed V-series and Bell 103/212A modulation schemes. Its 16-SOIC surface-mount construction is suitable for compact communication equipment, while the 3 V to 3.6 V operating range suits modern low-voltage systems. The manufacturer describes the device as an ISOMODEM system-side component, pairing it with a compatible Skyworks line-side device in complete modem solutions.
Skyworks ISOmodem devices use the patented direct access arrangement technology to provide a programmable telephone-line interface with high integration. The SI2434 provides the system-side modem functions, while a companion line-side device handles the line-facing interface. This division allows a compact two-chip implementation instead of a discrete modem, line driver, and protection network.
Typical applications include asynchronous serial modems, remote-access systems, data terminal adapters, embedded telephone-line data equipment, and legacy data-communication links. The SI2434-D-FS is also appropriate for equipment that must interoperate with Bell 103 or Bell 212A systems while supporting the listed ITU V-series protocols.
The principal design consideration is that the SI2434 is only the system-side portion of the chipset. Board designers must select a compatible line-side device, implement the recommended external network interface, and follow the manufacturer's reference circuit for filtering, protection, termination, and layout. Check the line-side device supply requirements and signal-level compatibility before releasing a production schematic.
This page combines protocol coverage, package information, verified sourcing listings, drop-in same-family alternatives, and practical implementation guidance. It is intended to help engineers evaluate the SI2434-D-FS for legacy telephone-line modem upgrades, interface redesigns, and long-tail supply situations before requesting a quote.
Mga alternatibo na pwedeng ilagay na SI2434-D-FS — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok SI2434-D-FS (parehas na form factor at footprint) — pagkakaiba sa Package, Maximum Data Rate, Product Type, Rate Negotiation, RoHS Status.
SI2434-C-FTR
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
SI2457-C-FT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →SI2415
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
SI2404-D-FS
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →SI2434-D-FS Mga Spesipikasyon
| Product Type | ISOMODEM system-side interface IC |
| Maximum Data Rate | 33.6 kbps |
| Supported Modulation | V.21, V.22, V.23, V.29, V.32 |
| Bell Support | Bell 103 and Bell 212A |
| Volte ng Pagbibigay | 3 V to 3.6 V |
| Packhaging | 16-SOIC, 0.154 in (3.90 mm) width |
| Uri ng Pagpapasok | Surface mount |
| Bilang ng Pins | 16 pins |
| Telephone Line Architecture | Direct access arrangement (DAA) modem interface |
| Line-Side Companion | Si3018 or Si3010 family device |
| Lead-Free Status | Lead free |
| Tindminan RoHS | RoHS compliant |
| Interface Standards | ITU-T V.21, V.22, V.23, V.29, V.32 and Bell 103, 212A |
Gabay sa Pin Configuration ng SI2434-D-FS 16-soic, 0.154 in (3.90 mm) width
Pin configuration para sa SI2434-D-FS (16-soic, 0.154 in (3.90 mm) width package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa SI2434-D-FS.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
SI2434-D-FS ay nararapat para sa 6 aplikasyons: Legacy Asynchronous Serial Modems, Data Terminal Adapters, Remote Access and Telemetry Equipment, Industrial Telephone-Line Control Links, Communications Adapter Retrofits, Point-of-Sale and Terminal Equipment.
Legacy Asynchronous Serial Modems
The SI2434-D-FS is appropriate for a compact asynchronous serial modem built around V.21, V.22, V.23, V.29, or V.32 signaling. Its 33.6 kbps system-side modem capability consolidates functions that otherwise require multiple interface components. A designer can pair the device with a Si3018 or Si3010 line-side IC, implement the manufacturer reference network, and support older remote-access terminals without adopting a much faster modern line modem.
Inirekomenda
Data Terminal Adapters
A data terminal adapter can use the SI2434-D-FS as its telephone-line modem engine when interoperability with Bell 103 or Bell 212A equipment is required. The device supports 33.6 kbps operation and the specified V-series protocols in a 16-SOIC package. Its high integration reduces the analog modem footprint, while the 3 V to 3.6 V operating range fits contemporary embedded control systems.
Inirekomenda
Remote Access and Telemetry Equipment
The SI2434-D-FS can support remote-access terminals, telemetry controllers, and equipment-maintenance links that communicate over a telephone line. Supporting V.22, V.23, V.29, and V.32 gives the design options for balancing throughput against line conditions. Because the SI2434 handles only the system-side functions, a compatible line-side device and properly protected network interface remain required for reliable field operation.
Inirekomenda
Industrial Telephone-Line Control Links
Industrial controllers can use the SI2434-D-FS to establish a low-speed control link over an analog telephone circuit. The Bell 103 and Bell 212A support is useful when communicating with legacy plant equipment, while V.29 and V.32 provide higher-rate options within the same modem architecture. The 16-SOIC format simplifies assembly, but surge protection, ring detection, and network isolation must be designed according to the application exposure.
Inirekomenda
Communications Adapter Retrofits
The SI2434-D-FS is useful when replacing a discrete or older modem subsystem in communications equipment that must retain Bell 103 or V-series interoperability. Its system-side ISOMODEM function consolidates modem processing into a single 16-SOIC device, while the companion line-side IC retains the line-facing circuitry. Before retrofitting, confirm signal levels, clocking, protocol firmware, and the physical dimensions of the existing analog interface.
Inirekomenda
Point-of-Sale and Terminal Equipment
Point-of-sale terminals and payment peripherals that communicate with older back-office systems can use the SI2434-D-FS for 33.6 kbps telephone-line connectivity. The supported V.21, V.22, V.23, V.29, V.32, Bell 103, and Bell 212A modes provide compatibility with a broad range of legacy controllers. Integration into a 16-SOIC package helps preserve board area, although line-network protection remains a critical design requirement.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for SI2434-D-FS — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | SI2434-C-FTR | SI2457 | SI2415 | SI2404 |
|---|---|---|---|---|---|
| Brand | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions |
| Package | 16-SOIC | 16-SOIC - same package | 16-SOIC - same package | 16-SOIC - same package | 16-SOIC - same package |
| Device Role | ISOMODEM system-side | ISOMODEM system-side | ISOMODEM system-side | ISOMODEM system-side | ISOMODEM system-side |
| Telephone-Line Technology | Direct access arrangement (DAA) ISOmodem | DAA ISOmodem | DAA ISOmodem | DAA ISOmodem | DAA ISOmodem |
| Compatible Line-Side Family | Si3018 or Si3010 | Si3018 or Si3010 family | Si3018 or Si3010 family | Si3018 or Si3010 family | Si3018 or Si3010 family |
Pangunahing mga Pagkakaiba
- Broad legacy protocol coverage in the system-side modem device (kumpara saSI2404)
- Same-family migration path with a common 16-SOIC footprint (kumpara saSI2434-C-FTR)
- Dedicated 33.6 kbps modem choice within a multi-device chipset (kumpara saSI2457)
- High integration reduces discrete telephone-interface footprint (kumpara saSI2415)
Talaan ng Disenyo
Use the Si2457/34/15/04D manufacturer data sheet as the authority for PCB layout, particularly for the system-side-to-line-side signal path, external filters, protection components, and high-voltage telephone-network isolation. Keep the modem signal route short and isolate it from digital clocks and switching supplies. Do not copy a generic RS-232 layout because the telephone-line interface has different impedance and isolation requirements.
Plan a clean 3 V to 3.6 V supply for the SI2434-D-FS and verify the companion line-side device's supply requirements independently. Place the regulator output capacitor and local decoupling capacitors close to their respective pins, with the shortest possible return path to the device ground. Verify startup, voltage tolerance, and line-side current draw in the complete chipset rather than treating the modem and line-side IC as independent loads.
Do not substitute the SI2434 for a line-side device or assume its 16-SOIC footprint alone guarantees interchangeability. Confirm pin functions, supply limits, protocol support, clock requirements, and the intended Si3018 or Si3010 companion. The SI2434-D-FSR result is especially easy to misread as an electrical drop-in because the device base matches; verify the ordering suffix, temperature grade, and delivery format in the manufacturer ordering table.
Telephone-line modem equipment must control conducted and radiated emissions because the line interface couples directly to external wiring. Apply the manufacturer's recommended network filtering and shield or guard the sensitive analog section, and keep switching regulators and their high-current loops away from the modem signal path. Validate emissions and immunity at the finished-product level, since enclosure and cable arrangements materially affect EMC results.
Impormasyon ng Pagsunod sa Kautusan
The verified part listing states lead-free status and RoHS compliance. Automotive qualification, REACH status, halogen-free status, and conflict-minerals declarations were not identified.
