SI2401-FS - 2400bps V.22bis ISOMODEM | Silicon Labs
Référence : SI2401-FS ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.6067 | $2,61 |
| 10 | $2.6067 | $26,07 |
| 100 | $2.6067 | $260,67 |
| 500 | $2.6067 | $1 303,35 |
| 1 000 | $2.6067 | $2 606,70 |
SI2401-FS Présentation
An ISOmodem is a modem integrated circuit that combines data modulation, telephone-line signaling, and an analog direct access arrangement. By integrating the DAA, the SI2401-FS reduces the number of external line-interface components while providing programmable country-specific telephone-line behavior. The verified source material identifies the device as a V.22bis ISOmodem with low-cost DAA and describes globally programmable telephone-line functionality.
Key supported rates include 2400 bps V.22bis, 1200 bps V.22, 1200 bps V.23, 1200 bps Bell 212A, 300 bps V.21, and 300 bps Bell 103. Fast connect and V.23 reversing are also identified. The source material additionally lists SIA and other security protocols and over 6000 V capacitive isolation, although exact test conditions and certification details are not available in the supplied data.
Technically, the SI2401-FS combines a modem data path with a telephone-line interface rather than operating as a conventional standalone analog modem. Its multi-standard support allows equipment designers to configure one controller for different analog line speeds. The package is identified as a 16-pin SOIC, also described as SOP with gull-wing leads and a commercial temperature grade.
Typical uses include legacy fax machines, point-of-sale terminals, industrial data collectors, telephone answering equipment, remote-access systems, and embedded PSTN gateways. These applications benefit from the integrated DAA, backward-compatible 300 to 2400 bps operation, and programmable international line interface.
Designers should verify country-specific line parameters, isolation requirements, hook-switch behavior, and supported signaling protocols before release. Because the SI2401-FS is a mature legacy interface, current lifecycle and availability should be reconfirmed before new production commitments. LCSC lists the SI2401-FS as in stock with pricing from $2.6067 as of 2026-10-23.
Alternatives de remplacement direct pour SI2401-FS — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesSI2401-FS Spécifications
| Product Type | 2400 bps V.22bis ISOmodem with low-cost DAA |
| Maximum Data Rate | 2400 bps |
| V.22bis Rate | 2400 bps |
| V.22 Rate | 1200 bps |
| V.23 Rate | 1200 bps |
| Bell 212A Rate | 1200 bps |
| V.21 Rate | 300 bps |
| Bell 103 Rate | 300 bps |
| Telephone Interface | Integrated programmable DAA |
| Capacitive Isolation | Over 6000 V |
| Connection Feature | Fast connect |
| V.23 Feature | V.23 reversing |
| Protocol Feature | SIA and other security protocols |
| Boîtier | 16-SOIC |
| Terminal Count | 16 terminals |
| Lead Form | Gull wing |
| Temperature Grade | Commercial |
| Type de montage | Surface mount |
Guide de configuration des broches du SI2401-FS 16-soic
Configuration des broches du SI2401-FS (boîtier 16-soic). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour SI2401-FS.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
SI2401-FS convient pour 6 applications: Legacy Fax and Data Equipment, Industrial Telephone Data Collection, Point-of-Sale Terminal, Remote Monitoring and Telemetry, Telephone Answering and Voice Access Equipment, Instrumentation with Legacy Modem Output.
Legacy Fax and Data Equipment
The SI2401-FS fits legacy fax and synchronous data terminals that must communicate over analog PSTN lines at 300, 1200, or 2400 bps. According to the manufacturer datasheet, its V.22bis, V.22, V.23, V.21, and Bell modem support covers common legacy rates, while the integrated low-cost DAA reduces the external telephone-interface component count. The design should validate country-specific line settings, ring detection, and hook-switch behavior. The principal benefit is reuse of an established 16-SOIC modem architecture; the limitation is that 2400 bps is far below modern broadband data rates and may be blocked by current carriers.
Recommandé
Industrial Telephone Data Collection
The SI2401-FS is applicable to industrial telemetry terminals that collect data through an analog telephone line. Its 2400 bps V.22bis mode offers a practical ceiling for low-volume status, alarm, and configuration traffic, while V.21 and Bell 103 fallback modes can improve compatibility with older endpoints. The integrated programmable DAA is useful where products must support multiple national line networks without a large external analog network. Engineers should still budget for isolation, line protection, and country-specific approvals. Compared with Ethernet or cellular hardware, the SI2401-FS is appropriate only where copper PSTN access remains available and low bandwidth is acceptable.
Recommandé
Point-of-Sale Terminal
The SI2401-FS can support a legacy point-of-sale terminal that performs dial-out transactions through an analog telephone network. V.22bis provides the highest verified data rate of 2400 bps, and the lower Bell and V-series modes allow fallback during degraded connections. Its integrated DAA can shorten the analog line-interface design compared with a discrete modem arrangement. The implementation must include correct off-hook and line-state handling and must be tested across the intended telephone networks. This is most appropriate for installed or long-life equipment where PSTN service is contractually available; new retail deployments normally favor Ethernet or cellular connectivity.
Recommandé
Remote Monitoring and Telemetry
The SI2401-FS supports legacy remote-monitoring installations that periodically transmit alarms and readings over analog telephone lines. The selectable 300 bps and 1200 bps modes can improve robustness on marginal connections, while the 2400 bps V.22bis mode reduces transfer time when line quality permits. Its programmable DAA is particularly relevant to equipment intended for multiple countries. System designers should use the datasheet to verify line-voltage, ring, and hook-switch requirements and should isolate the telephone network from low-voltage logic. The SI2401-FS is a bridge to installed PSTN infrastructure, not a replacement for modern low-power cellular modules.
Recommandé
Telephone Answering and Voice Access Equipment
The SI2401-FS can provide the data-modem path in older telephone answering, remote-access, or dual-function terminal designs that combine voice-line handling with low-speed data communication. Its integrated direct access arrangement shares the telephone-line interface, and V.21 or Bell 103 fallback supports older infrastructure. The design must account for simultaneous voice and data behavior, ring detection, and line-state inputs; exact implementation details require the complete manufacturer datasheet. Because this IC is a 2400 bps-class legacy interface, it offers limited throughput compared with V.34 or broadband solutions, but it can be economical for long-lived equipment.
Recommandé
Instrumentation with Legacy Modem Output
The SI2401-FS fits older laboratory or field instruments that must export measurements through a 300 to 2400 bps telephone modem. The multiple Bell and V-series standards increase the chance of communicating with legacy test systems, and the integrated DAA simplifies the line-side implementation. Instrument designers should reserve enough I/O for modem status, ring, and hook control and verify that analog isolation meets the target telephone-network requirements. This approach remains useful for installed equipment, but modern instruments typically offer Ethernet, USB, or wireless interfaces for higher throughput and simpler site deployment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour SI2401-FS — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Notes de conception
Do not treat related SI2401 family members as drop-in replacements without checking the complete pinout and electrical tables. The supplied search results call SI2401-FSR and SI2404-D-FS or SI2404-D-FSR functional equivalents, but they provide no verified pin mapping. Confirm package, pin names, supply voltage, interface timing, and DAA behavior directly from each candidate datasheet before revising a PCB.
Preserve the manufacturer reference-layout guidance for the integrated DAA and telephone-line nodes. Keep the line-side section physically separated from low-level logic, use the shortest practical isolation path, and avoid routing sensitive analog or digital signals beneath isolation and line-interface components. Although the exact PCB stack-up and creepage requirements are unavailable in the supplied excerpts, national telephone-network and safety rules must govern final spacing.
Validate the telephone-line interface and logic supplies across off-hook, on-hook, ring, and fault states before production. The source excerpts confirm an integrated DAA and over 6000 V capacitive isolation but do not provide supply voltage, current, or regulator recommendations, so those values must come from the full manufacturer datasheet. Do not infer that the isolation rating is a complete substitute for application-level surge protection.
Confirm the exact country approvals and operating line parameters for the finished product. The supplied material mentions FCC, China, JATE, and other protocols, but it does not provide certificate identifiers or current status. A modem IC compliance statement does not automatically qualify the complete telephone terminal, so obtain the applicable approval requirements for every country where the equipment will be sold.
Informations de conformité
The supplied SI2401-FS material references FCC, China, JATE, and other protocols, but it does not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations for this exact MPN.