SI2415-D-FT 56 kbps V.21/V.22 Modem | Skyworks
Артикул: SI2415-D-FT ✓ АктивенSI2415-D-FT Обзор
An ISO modem is a signal-processing integrated circuit that converts digital data into standardized telephone-line waveforms and reconstructs data from received waveforms. Within the product hierarchy, a modem IC sits below data-communication equipment, above analog and digital line-interface functions, and forms part of the broader telecommunications IC category. This distinction matters because the SI2415-D-FT is designed around analog telephone-network access rather than packet-oriented Ethernet or RF data transport.
The main differentiators of the SI2415-D-FT are its broad protocol coverage, 56 kbps maximum supported rate, automatic rate negotiation and caller-ID decoding in a single 24-pin TSSOP. Fast Connect support can shorten call setup for supported network services, while V.42bis and MNP2-5 add error correction and data compression when the transmitting and receiving modems support the corresponding modes. Type I and Type II caller-ID decoding supports telephone-system information services alongside basic modem data transfer.
Rev. D documentation groups this part with the Si2457, Si2434, Si2415 and Si2404 modem family. The shared documentation covers the ITU-T and Bell modem formats listed for the SI2415, including automatic rate negotiation and caller-ID features. Because the exact electrical limits, clocking requirements and interface signal assignments are not printed in the retrieved product listings, engineers should treat the Rev. D manufacturer datasheet as the controlling document for board-level implementation.
Typical uses include embedded fax and data terminal equipment, legacy telephone-system gateways, industrial data collection over analog lines, remote diagnostic interfaces and communication equipment that must retain V.21 or V.22 interoperability. The 56 kbps V.29 capability is also useful in equipment that links remote terminals to a central data concentrator or controller.
When laying out the design, follow the Rev. D application circuit for the external line interface, isolation, filtering and codec connections. Confirm the supply voltage, clock configuration and host-interface signals against the datasheet before releasing PCB artwork, and verify whether the telephone line interface needs an external protection network or transformer arrangement.
This page organizes the modem-format requirements, protocol options, package details, drop-in family candidates and practical design considerations into a single engineering reference. It also highlights where the Rev. D datasheet must be consulted for electrical limits and implementation details that are not stated in distributor catalog summaries.
Аналоги без доработки для SI2415-D-FT — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
SI2415-C-FT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SI2415-B-FT
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
SI2415-A-FT
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
SI2415-D-FT Характеристики
| Product Type | ISO modem integrated circuit |
| Maximum Data Rate | 56 kbps |
| ITU-T Modem Formats | V.21, V.22, V.23, V.29, V.32, V.42, V.42bis, V.44 |
| Bell Modem Formats | Bell 103 and Bell 212A |
| Caller ID Support | Type I and Type II decode |
| Rate Negotiation | Automatic |
| Fast Connect Support | Yes |
| Error Correction | V.42 |
| Data Compression | V.42bis |
| MNP Support | MNP2-5 |
| Корпус | 24-pin TSSOP |
| Package Family | TSSOP-24 surface-mount package |
| Тип монтажа | Surface mount |
| Documentation Revision | Revision D |
| Статус RoHS | Compliant |
| Automotive Qualification | Not AEC-qualified |
Руководство по цоколевке SI2415-D-FT в корпусе tssop-24 surface-mount package
Цоколевка для SI2415-D-FT (корпус tssop-24 surface-mount package). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для SI2415-D-FT.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
SI2415-D-FT подходит для 6 применениеs: Legacy Data Terminal Equipment, Industrial Remote Data Collection, Analog Fax and Data Terminal Gateways, Telephone Network Support Equipment, Central Data Concentrators, Caller-Aware Access Terminals.
Legacy Data Terminal Equipment
The SI2415-D-FT suits terminal equipment that must interoperate with analog telephone-line modems in offices, factories and support networks. V.21 and V.22 provide the baseline low-rate connection modes, while V.29 extends operation to 56 kbps. Fast Connect and automatic rate negotiation simplify session establishment when the far-end modem supports the corresponding functions. The modem's Bell 103 and Bell 212A support also allows it to connect with legacy equipment using North American signaling conventions. Firmware must implement the required framing, error correction and session-control behavior around the modem IC.
Industrial Remote Data Collection
The SI2415-D-FT can support remote monitoring and control links over analog telephone lines where network infrastructure is limited to plain old telephone service. Automatic rate negotiation is valuable when line quality varies, while V.42 error correction and V.42bis compression can improve effective throughput on suitable connections. Type I and Type II caller-ID decoding can also support incoming-site identification. For industrial deployment, follow the Rev. D line-interface circuit for surge protection, isolation and filtering, and validate behavior against the telephone-network quality present at each installation.
Analog Fax and Data Terminal Gateways
The SI2415-D-FT provides a compatible foundation for legacy fax and data terminals that require standard ITU-T modem negotiation. Its support for V.21, V.22, V.29 and V.32 covers common session speeds, while V.42, V.42bis and MNP2-5 support error-controlled transfer. Fast Connect can reduce call-establishment time where the receiving network and far-end equipment allow it. A production fax product still requires the correct image-transfer session software, page-management functions and external telephone-line circuitry around the 24-pin TSSOP modem.
Telephone Network Support Equipment
The SI2415-D-FT is appropriate for network-support hardware that needs to test, maintain or bridge legacy analog modem endpoints. Caller-ID decoding can assist with line-event identification, while automatic negotiation helps the equipment adapt to the capability of the connected modem. The 24-pin TSSOP package allows a compact controller-based implementation. Because the modem performs analog-line signal handling, system engineers should evaluate line isolation, protection components, routing distance and ground-reference strategy using the Rev. D reference design before production release.
Central Data Concentrators
The SI2415-D-FT can act as the remote-modem element in a centralized collection system that connects numerous low-speed endpoints to a host controller. V.29 operation up to 56 kbps is useful when higher-throughput legacy endpoints are present, and automatic rate negotiation helps establish sessions across devices with different supported rates. V.42 and V.42bis improve reliability on suitable links, while MNP2-5 accommodates compatible compression negotiation. The host interface, modem firmware and telephone front end must be qualified together for each operating mode.
Caller-Aware Access Terminals
The SI2415-D-FT is suitable for access terminals that display or log identifying information associated with an incoming telephone call. Type I and Type II caller-ID decoding gives the application a standardized means of receiving supported network information, and Fast Connect can streamline connection setup when supported by the far end. The implementation requires the correct external line-interface network and host firmware for parsing the decoded information. Verify regional network signaling requirements and the Rev. D electrical reference circuit before deploying the terminal in different markets.
Справочные инженерные данные для SI2415-D-FT — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SI2415-C-FT | SI2415-B-FT | SI2415-A-FT |
|---|---|---|---|---|
| Package | 24-TSSOP | 24-TSSOP - same footprint | 24-TSSOP - same footprint | 24-TSSOP - same footprint |
| Brand | Skyworks Solutions Inc. | Skyworks Solutions Inc. | Skyworks Solutions Inc. | Skyworks Solutions Inc. |
| Maximum Data Rate | 56 kbps | 56 kbps | 56 kbps class | 56 kbps class |
| Modem Type | ISO modem chipset | ISO modem chipset | SI2415-series modem chipset | SI2415-series modem chipset |
Ключевые отличия
- Broader Rev. D feature set within the SI2415 modem family (против SI2415-C-FT)
- Same published footprint and modem class as the closest identified replacement (против SI2415-C-FT)
- Caller-aware operation without adding a separate caller-ID receiver (против SI2415-A-FT)
Заметки по проектированию
Implement the Rev. D application circuit exactly, particularly the external telephone-line interface, isolation network and filtering components. Place the modem's decoupling capacitors close to the corresponding supply pins, and route the analog line signals away from host-interface clocks and fast digital edges. Verify the footprint against the 24-pin TSSOP land pattern rather than relying only on the package name, since package drawings can differ in lead pitch and exposed-pad treatment.
Treat the analog line path as a high-impedance, high-voltage environment even though the modem itself operates at low logic levels. Use the protection, isolation and filtering arrangement specified by the Rev. D reference design, and keep high-energy telephone transients away from the modem and host controller. Validate ringing and signal attenuation with the intended telephone network because the automatic rate-negotiation and error-correction features depend on actual line quality.
Do not assume that two parts with the same TSSOP-24 outline are firmware-compatible. Before replacing SI2415-D-FT with an earlier SI2415 revision, compare the register map, host-interface behavior, initialization sequence, supported protocol set and caller-ID handling. Rev. D adds Fast Connect, V.42, V.42bis, V.44, MNP2-5 and automatic rate negotiation to the family feature set, so removing one of these functions can change firmware behavior as well as electrical compatibility.
Keep switching regulators and digital processors physically separated from the telephone-line front end, particularly where the modem connects to an external transformer or protection network. Use a continuous ground reference under the analog section and return modem and interface currents locally before they reach the chassis or system ground point. This helps prevent switching currents and digital coupling from appearing directly across the modem line-sensing nodes.
Информация о соответствии
The SI2415-D-FT product comparison identifies the device as RoHS compliant. No additional REACH, halogen-free, lead-free or conflict-minerals declarations are stated in the retrieved catalog information.
