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產品（38,000+)

SI2400-BS 2.4 kbps ISOmodem IC | Skyworks Solutions
SI2400-BS

SI2400-BS 2.4 kbps ISOmodem IC | Skyworks Solutions

The Skyworks Solutions SI2400-BS is a 2.4 kbps ISOmodem system-side interface IC supporting V.21, V.22, V.23, Bell 103, Bell 212A, and V.22bis operation in a 16-pin SOIC package. According to the verified distributor data, it operates from a 3 V to 5.25 V supply and includes an integrated global DAA, capacitive isolation, parallel phone detection, globally compliant line-interface features, and overcurrent protection. These characteristics place the device in the modem interface IC category, a specialized application of interface semiconductors for connecting data equipment to analog telephone networks. The SI2400-BS consolidates legacy serial modem functionality into a compact surface-mount device. Its highest supported data rate is 2400 bps, while V.21 and Bell 103 provide lower-rate operation and V.22, V.23, Bell 212A, and V.22bis provide additional protocol compatibility. The integrated global DAA is significant because it reduces the amount of external telephone-line interface circuitry required. Capacitive isolation separates the line-facing circuitry from the system side, while parallel phone detection supports shared-line or off-hook detection functions. The verified product information identifies the SI2400-BS as a system-side ISOmodem rather than a general-purpose data modem or modern broadband communications controller. Its 16-SOIC body measures 3.90 mm wide in the standard 0.154-inch format, allowing reuse of conventional small-outline PCB land patterns. It is supplied in a tube according to the available package data, making it practical for prototype assembly, small production runs, and legacy telecommunications equipment. Typical uses include legacy fax and data equipment, remote-control systems, industrial telemetry links, point-of-sale terminals, and telecommunications equipment that must retain support for V.21, V.22, V.23, Bell 103, or Bell 212A connections. Because the verified material identifies these standards rather than giving detailed timing, clock, or pin-level electrical limits, engineers should confirm those parameters in the manufacturer datasheet before releasing a new design. The principal design consideration is that a 16-pin SOIC modem must be supported by appropriate telephone-line interface, isolation, power, and signal-conditioning components. Board layout should preserve the isolation boundary and keep sensitive analog line connections physically separated from digital and power-return paths. Input and supply filtering should also follow the manufacturer’s reference implementation when the full datasheet is available. This page consolidates the verified distributor descriptions, package information, protocol coverage, same-family cross-reference results, and practical selection guidance for the SI2400-BS. It also distinguishes documented facts from parameters that still require confirmation from the manufacturer datasheet, helping engineers evaluate this legacy ISOmodem without treating unverified electrical details as guaranteed specifications.

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SI2400-FS - 2.4 kbps ISOmodem | Silicon Labs | SOIC-16
SI2400-FS

SI2400-FS - 2.4 kbps ISOmodem | Silicon Labs | SOIC-16

Silicon Labs SI2400-FS is a 2.4 kbps system-side ISOmodem chipset interface IC supporting V.21, V.22, V.23, Bell 103, and Bell 212A formats in a 16-pin SOIC package. It operates from 3 V to 5.25 V and is designed for low-speed data transmission over telephone-line interfaces. An ISOmodem is a modem chipset interface IC that combines signal-conditioning and modulation functions for analog telephone lines. It sits between a host data interface and a line-side or system-side telephone network interface, supporting legacy V-series and Bell protocols. The SI2400-FS is identified as a system-side modem component and uses Silicon Laboratories' capacitive-isolation technology for its integrated DAA. The SI2400-FS supports V.21, V.22, V.23, Bell 103, and Bell 212A data formats at a nominal 2.4 kbps class of operation. Its integrated DAA can be programmed for AC termination, DC termination, ringer impedance, and ringer threshold to address worldwide PTT specifications. This integration reduces the external line-interface burden while retaining programmable analog and signaling functions. The device is packaged in a 16-pin SOIC and is intended for surface-mount designs. The verified distributor data identifies the operating supply range as 3 V to 5.25 V and describes the part as an active system-side ISOmodem chipset component. Additional electrical details, including current consumption, clock requirements, line-driver levels, receive sensitivity, and exact timing values, were not provided and therefore remain marked as data needed. Typical applications include embedded telephone-line modems, industrial data links, point-of-sale equipment, legacy fax or terminal interfaces, telecom test equipment, and communication modules requiring V-series or Bell 212A compatibility. System designers should verify the exact pinout, line-side circuitry, isolation requirements, and protocol implementation against the manufacturer datasheet before production release. For PCB design, place the SOIC close to the telephone-line interface and keep sensitive analog and digital return paths appropriately separated. Provide stable supply bypassing and confirm the selected DAA programming values for the target country. Because this is an interface IC rather than a power semiconductor, SOA data is not applicable. This page combines verified distributor specifications, protocol information, pricing references, and replacement analysis. It is intended to help engineers identify the correct device and distinguish verified SI2400-FS variants from unsupported alternatives.

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SI2400-KS - 2.4 kbps V.22bis ISOmodem | Silicon Labs
SI2400-KS

SI2400-KS - 2.4 kbps V.22bis ISOmodem | Silicon Labs

The Silicon Labs SI2400-KS is a 2.4 kbps V.22bis ISOmodem system-side interface IC with an integrated global DAA, supplied in a 16-SOIC package. It supports V.21, V.22, V.23, Bell 103, and Bell 212A data formats, along with V.25 fast connect and security protocols. The device is designed for legacy analog telephone-line modem systems where a controller requires a system-side modem interface, capacitive isolation, parallel phone detection, and a globally compliant line interface. Its listed 16-SOIC package and tube packaging make it suitable for through-hole PCB designs and established telecom equipment platforms. A V.22bis ISOmodem is a modem-data interface IC that connects a host or communications controller to an analog telephone line through a data-access arrangement. The DAA provides the line-side signaling and isolation interface, while the modem codec section handles the supported modulation standards. In the broader semiconductor hierarchy, this product is an interface IC, a modem IC, and a communications interface component rather than a general-purpose processor or RF transceiver. The verified feature set emphasizes 2,400 bps V.22bis operation, lower-rate V.21, V.22, V.23, Bell 103, and Bell 212A support, V.25 fast connect, reversing, SIA, and other security protocols. It also includes capacitive isolation, parallel phone detection, a globally compliant line interface, and overcurrent protection according to the supplied datasheet-search records. The 16-SOIC package is identified as approximately 3.90 mm wide in the retrieved specification result. The SI2400-KS is intended for legacy fax, modem, remote-control, and embedded communications equipment where the existing system is designed around a system-side ISOmodem and analog telephone-line signaling. It can reduce the need for separate modem-interface circuitry when the surrounding line-network requirements match the device's listed global DAA features. Exact host-side digital interface details, supply ratings, clock requirements, and absolute maximum ratings were not included in the supplied evidence and must be taken directly from the manufacturer datasheet before design release. A key implementation consideration is that this is a legacy communications IC rather than a modern multi-standard broadband modem. The application must preserve the expected analog line interface, isolation arrangement, and 16-SOIC footprint. Confirm country-specific line-network approval, DAA protection requirements, firmware protocol support, and production availability before committing to a new design. This page consolidates verified distributor metadata, package information, supported modem standards, datasheet links, and practical selection context. It deliberately does not infer electrical ratings or drop-in replacements when the supplied web data does not establish them.

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SI2401-FS - 2400bps V.22bis ISOMODEM | Silicon Labs
SI2401-FS

SI2401-FS - 2400bps V.22bis ISOMODEM | Silicon Labs

The Silicon Labs SI2401-FS is a complete 2400 bps ISOmodem telephone-line interface IC integrating a low-cost direct access arrangement (DAA) in a 16-SOIC package. It supports V.22bis at 2400 bps, V.22 and V.23 at 1200 bps, Bell 212A at 1200 bps, and V.21 and Bell 103 at 300 bps. The SI2401-FS is intended for legacy PSTN, fax, data-communication, and embedded modem equipment. 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.

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SI2401-FSR - 2400bps V.22bis ISOMODEM | Silicon Labs (Tape & Reel)
SI2401-FSR

SI2401-FSR - 2400bps V.22bis ISOMODEM | Silicon Labs (Tape & Reel)

The Silicon Labs SI2401-FSR is a complete 2400 bps ISOmodem telephone-line interface IC integrating a low-cost direct access arrangement (DAA) in a 16-SOIC package. It supports V.22bis at 2400 bps, V.22 and V.23 at 1200 bps, Bell 212A at 1200 bps, and V.21 and Bell 103 at 300 bps. The SI2401-FSR is intended for legacy PSTN, fax, data-communication, and embedded modem equipment. 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-FSR 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-FSR 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-FSR is a mature legacy interface, current lifecycle and availability should be reconfirmed before new production commitments. LCSC lists the SI2401-FSR as in stock with pricing from $2.6067 as of 2026-10-23.

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SI2404-D-FS 56kbps ISOmodem IC | Skyworks | 16-SOIC
SI2404-D-FS

SI2404-D-FS 56kbps ISOmodem IC | Skyworks | 16-SOIC

Skyworks Solutions SI2404-D-FS is a system-side ISOmodem data-communications IC supporting 2,400 bps operation and modem formats including V.21, V.22, V.23, V.29, Bell 103, and Bell 212A in a 16-pin SOIC package. The related SI2404 family supports communication rates extending from 2,400 bps to the V.92 class at 56,000 bps when paired with an appropriate line-side companion device. An ISOmodem is a modem controller integrated circuit designed for data communication over telephone, analog, or other limited-bandwidth connections. It combines modulation, data handling, call-control signaling, and line-interface functions into a compact device. A system-side ISOmodem normally works with a line-side counterpart, allowing the two devices to divide the functions required for a complete analog data modem connection. The SI2404-D-FS supports the principal V-series and Bell modem formats identified in the manufacturer documentation, including V.21, V.22, V.23, V.29, Bell 103, and Bell 212A. Related family documentation also identifies V.44, V.42, V.42bis, MNP2-5, automatic rate negotiation, Fast Connect, and Type I and Type II caller-ID decoding. These capabilities make the family applicable to legacy data equipment, embedded communication modules, fax systems, and industrial interfaces requiring standards-compatible modem signaling. As a 2.4 kbps system-side modem IC, the SI2404-D-FS emphasizes compact implementation and compatibility with established modem protocols. Its 16-pin SOIC package provides a small surface-mount footprint, while the protocol mix allows operation with older terminals, fax machines, remote-management equipment, and telephone-network interfaces. The maximum 56,000 bps family capability depends on the selected line-side companion and does not mean that every operating mode of the SI2404-D-FS itself runs at that rate. Typical implementations include embedded analog modems, fax-modem modules, industrial remote terminals, point-of-sale equipment, telecommunications test equipment, and legacy data-collection systems. In each application, the correct line-side IC, isolation boundary, analog termination, and network interface must be selected together because the SI2404-D-FS represents the system-side portion of the modem chipset. When laying out the PCB, place the SI2404-D-FS close to the companion modem and analog-network interface components. Follow the manufacturer pin-description table for supply, ground, clock, control, and analog connections, and preserve the specified decoupling arrangement. Component population and timing values should be selected from the SI2404 family documentation rather than estimated from unrelated modem designs. This page combines protocol identification, package and rate details, drop-in comparison guidance, and practical integration notes to accelerate component selection. Review the complete SI2404 family datasheet and your system-level modem requirements before releasing a production design.

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SI2439-A-FM - V.34/V.92 Global DAA Modem | Skyworks
SI2439-A-FM

SI2439-A-FM - V.34/V.92 Global DAA Modem | Skyworks

Skyworks Solutions SI2439-A-FM is a single-chip ISOmodem integrated circuit supporting V.34 and V.92 modem standards, operating at 33.6 kbps, and integrating a global DAA. The device is supplied in a surface-mount 38-pin QFN package measuring 5 mm by 7 mm and operates from a 3 V to 3.6 V supply. An ISOmodem is an integrated modem IC that combines a data-access arrangement with modem signal-processing functions. In the broader semiconductor hierarchy, it is a communication interface IC and a network controller/processor-class device that connects host equipment to analog telephone, WAN, or digital-network interfaces. The integrated DAA reduces the number of external telephone-line interface components needed in a connected product. The SI2439-A-FM is identified as a V.34 and V.92 modem solution with a stated data rate of 33.6 kbps. Its 38-QFN construction is intended for compact surface-mount equipment, while the exposed-pad package arrangement supports board-level thermal management. The 3 V to 3.6 V operating range allows the modem circuitry to operate from a regulated low-voltage rail in embedded communications equipment. This part belongs to Skyworks' ISOmodem family, where modulation, data pumping, line-interface functions, and a global DAA are consolidated into one mixed-signal semiconductor. Consolidation can reduce external component count and board area compared with a discrete modem implementation. The package also reduces interconnect complexity by placing the modem functions and their required land pattern on a single surface-mount device. Typical uses include embedded asynchronous modems, data communications equipment, telephone-network interfaces, industrial data links, and legacy WAN connectivity equipment. Selection is appropriate when a design specifically requires V.34 or V.92 compatibility, a 33.6 kbps modem channel, and the SI2439-A-FM's integrated global DAA. Host software, line-interface support, and regulatory certification must be evaluated as part of the complete modem subsystem. The principal design consideration is the exposed-pad footprint. Place the device according to the manufacturer's land pattern, provide all supply and ground connections, and follow the datasheet's recommended decoupling and thermal-layout requirements. Because modem performance depends on the surrounding telephone interface and implementation, validate conducted emissions, line behavior, and interoperability in the final equipment rather than relying only on individual IC measurements. This page consolidates the verified product identity, package information, modem standards, supply range, and sourcing information into one engineering reference. It also distinguishes confirmed device attributes from details that require direct review of the manufacturer datasheet, including the complete pin table, clocking requirements, line-interface values, and approved application configurations.

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SI2456-FT 56 kbps ISOModem Chipset | Silicon Laboratories
SI2456-FT

SI2456-FT 56 kbps ISOModem Chipset | Silicon Laboratories

The Silicon Laboratories SI2456-FT is a 3.3 V ISOModem chipset with an integrated global data access arrangement, operating at Bell 300 bps to 56 kbps data rates in a 24-lead TSSOP package. It supports V.21, V.22, V.23, V.32, V.32bis, V.34, V.42bis, V.90, Bell 103, and Bell 212A signaling. The SI2456-FT also provides more than 5000 V capacitive isolation, parallel phone detection, automatic rate negotiation, and a globally compliant line interface. An ISOModem chipset is an integrated data-over-voice modem optimized for telephone and wide-area-network endpoints. Within the broader modem hierarchy, it combines signaling functions, data-link protocols, and telephone-line interface circuitry in one IC. This integration reduces the number of external interface components required in designs that need asynchronous or synchronous data transfer over an analog phone line. The principal features of the SI2456-FT include a 3 V to 3.6 V supply range, 56 kbps maximum data rate, V.42bis and MNP2-5 error correction, automatic rate negotiation, parallel phone detection, and overcurrent protection. Its lead-free 24-TSSOP package supports conventional surface-mount assembly while exposing the device in the system-side modem format identified by the SI2456-FT ordering code. Technically, the device combines modem signal processing with an integrated global DAA. The DAA provides the telephone-line termination and isolation functions required for connected-line operation, while protocol support covers the principal ITU-T and Bell modem recommendations listed for the component. Automatic rate negotiation allows the modem to select an appropriate bearer rate from the capabilities of the connected endpoint, and V.42bis/MNP2-5 support improves transmission reliability on noisy lines. Typical uses include point-of-sale terminals, industrial data-collection equipment, remote telemetry systems, embedded telephone-network access, and legacy equipment requiring a Bell or ITU-T modem connection. The SI2456-FT is particularly appropriate where a compact surface-mount solution and integrated line isolation are more important than a high-speed broadband data interface. Designers should verify the exact board layout, external network-interface components, and firmware requirements against the manufacturer datasheet before production. Because this is an integrated line-side modem chipset, PCB creepage, isolation, grounding, and telephone-network compliance require careful implementation; substitution should never be based on package appearance alone. This page consolidates verified specifications, sourcing information, replacement guidance, and design considerations for the SI2456-FT. It also distinguishes a documented same-package family alternative from unverified substitutes, helping engineers make a defensible legacy-modem sourcing decision.

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SI2457-C-FT 56 kbps V.90 Modem | Skyworks Solutions Inc.
SI2457-C-FT

SI2457-C-FT 56 kbps V.90 Modem | Skyworks Solutions Inc.

Skyworks Solutions Inc. SI2457-C-FT is a 56 kbps data modem IC operating from a 3 V to 3.6 V supply in a 24-pin TSSOP package. It supports Bell and ITU-T modem formats including V.21, V.22, V.23, V.32, V.34, and V.90, with parallel phone detection and more than 6000 V of capacitive isolation. The device is associated with the Si2457/34/15/04 ISOmodem family of integrated data access arrangements. An integrated modem or data access arrangement converts serial digital data into line-frequency signaling compatible with telephone, fax, or data equipment. The SI2457-C-FT combines modulation, data-access, and telephone-line interface functions in one IC, reducing the number of external components required for a conventional modem design. It belongs to the modem IC hierarchy within interface integrated circuits, where protocol conversion and physical-line signaling connect digital hosts to analog communication networks. Key features include support for data rates through 56 kbps, automatic rate negotiation using MNP2-5, V.42bis error correction, parallel phone detection, DTMF detection, and a built-in phase-locked loop. Its 3.3 V operating point suits modern 3 V digital systems, while the integrated DAA provides galvanic separation from the telephone line through capacitive isolation. The commercial-temperature rating supports indoor telecom, industrial control, fax, and data-communication equipment. Technically, the SI2457-C-FT is a system-side modem solution rather than a general-purpose transceiver. Its protocol support allows a host processor to establish modem connections across PSTN or equivalent line systems. The built-in phase-locked loop supports stable symbol timing, and the integrated telephone-interface functions simplify the analog line path. Designers should still account for line protection, regional impedance requirements, coupling components, and the complete reference circuit described in the manufacturer data sheet. Typical uses include legacy fax equipment, remote-access terminals, industrial monitoring links, embedded telephone interfaces, point-of-sale systems, and communications equipment that must support both V.21-class low-speed data and V.90-class 56 kbps operation. The broad protocol set makes the IC useful where interoperability with older telephone infrastructure matters more than raw data throughput or a modern packet-based interface. A critical design consideration is the telephone-line interface. The manufacturer data sheet specifies the external component values, isolation network, hook and phone-detection circuitry, and layout constraints required for reliable operation. Keep sensitive line-side routing compact, provide the specified protection network, and observe the required creepage and clearance distances for the intended installation class. This product page consolidates the SI2457-C-FT electrical characteristics, package information, protocol capabilities, application guidance, and confirmed same-package alternatives. It also highlights practical distinctions among closely related Si2457-family devices so engineers can assess footprint reuse, modem features, and implementation constraints before placing a part on a new design.

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SI2493-C-FS 56 kbps V.92 ISOmodem | Skyworks Solutions
SI2493-C-FS

SI2493-C-FS 56 kbps V.92 ISOmodem | Skyworks Solutions

The Skyworks Solutions Inc. SI2493-C-FS is a 56 kbps V.92 ISOmodem system-side interface IC supporting V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, and Bell 212A data formats. The device is packaged in a 16-pin SOIC measuring 0.154 inch by 0.390 inch and is supplied in a tube. A V.92 ISOmodem is a system-side data communications controller designed to connect a host or embedded system with a telephone network interface. In the ISOmodem architecture, the SI2493-C-FS handles modem signal processing and data modulation while an external data access arrangement supports computer-side connectivity. It belongs to the broader hierarchy of modem IC, network interface controller, interface IC, and semiconductor. The principal feature of the SI2493-C-FS is its combination of legacy and V.90/V.92 modulation support in one integrated device. Its listed formats include V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, and Bell 212A. The 56 kbps V.92 operating rate and extensive protocol coverage make the device suitable for specialized data equipment that must interoperate with older telephone-network equipment. The 16-pin SOIC is offered as the footprint-compatible system-side implementation associated with the Si2401 ISOmodem family. This package option supports conventional surface-mount PCB assembly while retaining access to the modem functions required by compact embedded and industrial data products. The suffix identifies a specific ordering configuration; the manufacturer datasheet remains the controlling document for electrical limits, clocking, interface behavior, and application wiring. Typical uses include legacy modem pools, industrial data communication equipment, telephone-line monitoring systems, point-of-sale terminals, and embedded access products requiring Bell or V-series compatibility. Because V.92 modem designs include analog telephone-line characteristics, component selection must account for the external line interface, isolation, filtering, ring detection, and the host-side communication requirements of the complete system. For a new PCB, use the 16-pin SOIC footprint and follow the manufacturer pin-description table and typical application circuit. Do not assume that footprint compatibility alone guarantees functional interchangeability. Review clock requirements, supply sequencing, interface signals, country-specific line-network behavior, and external analog components before transferring an existing design to SI2493-C-FS. This product page combines the manufacturer data-sheet information, interface and package characteristics, protocol coverage, verified sourcing records, and practical implementation guidance. It also distinguishes explicitly documented replacements from merely similar modem ICs so engineers can assess PCB reuse, protocol support, and system-level risk before making a sourcing decision.

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SI2493-D-FS - 56 kbps V.92 ISOmodem | Skyworks Solutions
SI2493-D-FS

SI2493-D-FS - 56 kbps V.92 ISOmodem | Skyworks Solutions

The Skyworks Solutions SI2493-D-FS is a complete ITU V.92-compliant system-side ISOmodem that supports full-duplex data connections at rates up to 56,000 bps over the Public Switched Telephone Network. It is supplied in a 16-pin SOIC package and integrates a global data access arrangement for telephone-line modem designs. An ISOmodem is a modem controller and data-access arrangement integrated into one semiconductor. In this architecture, the controller processes modulation protocols and line-interface functions while the data access arrangement connects the modem to the telephone network. ISOmodems are used when a system needs legacy PSTN connectivity in a compact, integrated implementation rather than a collection of separate modem, codec, and interface circuits. The SI2493-D-FS supports ITU-T V.21, V.22, V.23, V.29, V.32, V.34, V.90, and V.92 data formats. Its data set also includes Bell 103 and Bell 212A formats, V.44 compression with V.42, V.42bis, and MNP2-5 support, automatic rate negotiation, PCM upstream operation, and V.92 quick connect. The combination of V.92 data rates and quick-connect functionality targets systems requiring faster modem call establishment over analog telephone lines. The device uses a complete modem architecture for full-duplex PSTN operation, with conventional data formats supported through 56,000 bps. This makes it suitable for embedded data collection, remote equipment access, point-of-sale terminals, and industrial controllers that must communicate with legacy analog telephone infrastructure. The integrated global DAA reduces the number of discrete telephone-interface components required in a conventional modem design. The SI2493-D-FS is specified in a 16-pin SOIC package for surface-mount assembly. Circuit implementation requires attention to the telephone-line interface, isolation requirements, analog signal routing, and the power connections defined by the manufacturer datasheet. Use the published reference design and pin-description table when assigning PCB nets because analog telephone nodes must not be routed like ordinary digital signals. This page organizes the SI2493-D-FS protocol capabilities, package details, application guidance, and practical design considerations for engineers evaluating legacy PSTN connectivity. It also distinguishes documented device attributes from parameters that require confirmation from the full manufacturer datasheet before schematic release or production qualification.

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SI2494-A-GM 56 kbps V.92 Modem IC | Skyworks Solutions
SI2494-A-GM

SI2494-A-GM 56 kbps V.92 Modem IC | Skyworks Solutions

The Skyworks Solutions SI2494-A-GM is a 56 kbps system-side ISOmodem data communications controller supporting ITU-T V.21, V.22, V.29, V.32, V.34, V.42, V.42bis, V.44, and V.92 data modem formats, with Bell 300 bps support, MNP2-5, Fast Connect, and V.92 Quick Connect. The device is packaged in a 38-pin QFN with exposed pad measuring 5 mm by 7 mm. A data modem IC converts serial data into modulation formats suitable for analog telephone, fax, and legacy WAN connections. The SI2494-A-GM belongs to the controller and processor class of integrated circuits, combining protocol handling, caller-ID decoding, rate negotiation, and host-interface control in one device. Its system-side architecture is intended for embedded equipment that connects a host processor to an analog line interface. Key capabilities include operation up to 56 kbps under V.92, support for V.42 and V.42bis error correction, MNP2-5 automatic rate negotiation, V.92 PCM upstream operation, and Type I and Type II caller-ID decoding. The host can connect through UART, SPI, or a parallel interface, allowing integration with different embedded controller architectures. The chip also accepts flexible clocking options and can use a low-cost 32.768 kHz oscillator. The SI2494-A-GM avoids external ROM or RAM for its modem functions, reducing the number of supporting components required around the data path. Bell 300 bps operation and the broader ITU-T format set preserve compatibility with older terminal equipment, while V.92 support enables higher-rate analog data sessions where the connected line and service support it. Typical applications include industrial data terminals, point-of-sale systems, remote-access equipment, fax machines, telephone-interface gateways, and embedded modem modules. The 38-QFN package is suitable for compact surface-mount assemblies, but careful treatment of the exposed thermal pad and high-speed clock and interface routing is important for dependable operation. Design the supply, analog-line interface, clock source, and host interface according to the manufacturer reference schematic. Keep the exposed-pad connection unobstructed, follow the recommended decoupling arrangement, and validate timing margins across all three supported host-interface modes. Firmware must also select the correct regional modem profile, negotiated rate, and V.92 capability. This product guide combines the confirmed modem features, package information, interface choices, and application guidance with practical replacement and design context. Use the manufacturer datasheet pin-description table and reference circuit when assigning PCB tracks and selecting external analog-line components.

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SI3000-C-FS - 16-Bit Voice Codec | Skyworks Solutions
SI3000-C-FS

SI3000-C-FS - 16-Bit Voice Codec | Skyworks Solutions

Skyworks Solutions SI3000-C-FS is a 16-bit voice-band audio codec with a serial interface, programmable input and output gain or attenuation, microphone bias, a handset hybrid circuit, and output drive for 32-ohm headphones. The device operates from 3 V to 5.25 V and is packaged in a 16-pin SOIC. A voice-band audio codec converts analog voice signals into digital data for transmission and reconstructs digital audio into an analog signal for playback. The SI3000-C-FS integrates several telephone-interface functions that otherwise require separate components, including microphone amplification, output drive, microphone bias, and handset hybrid support. Its 16-bit serial interface allows it to connect with compatible modem and data-access-arrangement devices. Programmable input and output gain or attenuation provide control over signal levels in analog voice paths. The integrated microphone bias circuit supports microphone-based input stages, while the output driver is specified for 32-ohm headphones. These functions reduce the number of external analog components required in a voice-band interface. The SI3000 family is intended for voice-band equipment, including ISOmodem and digital access equipment. The SI3000-C-FS can connect directly to Si3035, Si3044, and Si3056 North American and international DAA chipsets through the serial interface, allowing an analog voice path to be paired with an established line-interface chipset. Supply-voltage operation from 3 V to 5.25 V makes the codec usable in 3.3 V and 5 V systems. The listed operating-temperature range is 0 C to 70 C. Because this is a mixed analog-and-serial-interface device, correct grounding, supply decoupling, clock implementation, and layout of the voice path directly affect signal integrity and audio performance. For a new design, use the manufacturer pin-description table and recommended application circuit when assigning PCB tracks, setting gain, and selecting support components. Pay particular attention to analog and digital return paths, the microphone-bias connection, and the output-drive network. The 16-pin SOIC footprint supports conventional surface-mount assembly but requires adequate copper and thermal considerations for reliable soldering. This page combines device capabilities, application fit, sourcing guidance, and practical design notes to help engineers evaluate the SI3000-C-FS for compact voice-band systems. It also distinguishes verified compatibility from unknown replacement options so procurement decisions can be based on package, interface, and electrical requirements rather than MPN similarity alone.

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SI3000-C-GS - 16-Bit Voice-Band Audio Codec | Skyworks
SI3000-C-GS

SI3000-C-GS - 16-Bit Voice-Band Audio Codec | Skyworks

The Skyworks Solutions Inc. SI3000-C-GS is a 16-bit voice-band audio codec with 84 dB ADC dynamic range, 84 dB DAC dynamic range, and 4–12 kHz sample rates in a 16-SOIC package. It integrates a 30 dB microphone preamplifier, programmable input and output gain or attenuation, microphone bias, handset hybrid circuitry, and output drive for 32 Ω headphones. A voice-band codec is a specialized audio interface that converts analog microphone or line-level signals into a digital serial stream and converts digital audio back into an analog output. Within the hierarchy of audio codecs, line codecs, audio interface ICs, and interface semiconductors, it concentrates several telephone and modem signal-chain functions into one device. Its narrowband sampling range is intended for speech rather than hi-fi music. The SI3000-C-GS provides one ADC and one DAC, both using 16-bit resolution. Programmable input and output gain or attenuation gives the system designer control over signal levels, while the 30 dB microphone preamplifier supports direct microphone conditioning. The integrated bias circuit reduces external microphone-support requirements, and the headset driver is specified for 32 Ω loads. Integration is a central advantage because the codec combines the analog voice interface, conversion functions, and telephone-support circuitry. According to the manufacturer datasheet, the device can connect directly with Si3034, Si3035, Si3044, and Si3056 data-access arrangements and chipsets. These interfaces support voice-band modem and telephone equipment where board area and component count are important constraints. Typical applications include voice-band modems, telephone interface boards, handsets, speakerphones, voicemail equipment, and data-access adapters. The 16-SOIC package also makes the SI3000-C-GS suitable for designs that require conventional surface-mount assembly rather than a high-density land grid array. When designing around this codec, verify the required analog supply, digital interface voltage, sampling clock, and serial device configuration against the manufacturer pin descriptions and application guidance. Decoupling, grounding, and microphone-bias layout remain critical because they directly influence noise, distortion, and voice intelligibility. This product data combines the confirmed electrical characteristics, package information, interface functions, application fit, and design considerations needed to evaluate the SI3000-C-GS for a voice-band audio signal chain.

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SI3000-KS - 16-Bit Voice Codec | Skyworks Solutions
SI3000-KS

SI3000-KS - 16-Bit Voice Codec | Skyworks Solutions

Skyworks Solutions SI3000-KS is a 16-bit voice-band interface codec with one ADC channel and one DAC channel, supporting sample rates from 4 kHz to 12 kHz in a 16-pin SOIC package. The verified listing identifies 84 dB ADC dynamic range, 84 dB DAC dynamic range, a 30 dB microphone preamplifier, programmable input gain or attenuation, and programmable output gain or attenuation. It is intended for voice-band audio systems requiring integrated conversion and microphone or speaker drive functions. The distributor data also identifies the SI3000-KS as a leaded interface codec and reports that Skyworks recommends the Si3000-C-FS datasheet for current design work. This means lifecycle status should be confirmed before new production commitments, although the SI3000-KS remains listed by distributors. A voice-band codec is an audio interface integrated circuit that converts analog microphone or line-level signals into digital PCM data and converts digital audio back into an analog output. In the broader device hierarchy, the SI3000-KS belongs to audio codecs, interface ICs, signal-conversion devices, and semiconductor components. Its one-ADC and one-DAC architecture is suitable for compact telephony, communications, embedded voice, and audio-assistance designs where a dedicated low-bandwidth audio path is required. The 4 kHz to 12 kHz sample-rate range targets narrow voice bandwidth rather than full-spectrum hi-fi audio. The main engineering benefits are the stated 84 dB conversion dynamic range, integrated microphone and speaker-drive support, and programmable analog gain controls. Input gain or attenuation helps match microphone levels to the converter, while output gain or attenuation helps condition the playback signal before the speaker amplifier. The 30 dB microphone preamplifier provides additional headroom for weak microphone sources. Because the verified data does not provide supply voltage, clock requirements, control-interface details, absolute maximum ratings, or thermal data, those values must be obtained from the manufacturer datasheet before final schematic or PCB approval. Use the SI3000-KS when the design specifically needs a narrowband voice codec with integrated ADC, DAC, microphone preamplification, and programmable gain. Suitable application directions include telephone handsets, intercom systems, industrial voice terminals, automotive voice interfaces, and embedded communication modules. The automotive positioning appears in distributor descriptions, but qualification status and exact environmental requirements are not independently established by the supplied data and therefore remain unknown. A design must also verify that the required sample rate, serial interface, audio levels, power rails, and external components match the device datasheet. The principal design consideration is lifecycle risk. Mouser states “Leaded - Not recommended for new designs, see Si3000-C-FS datasheet,” while DigiKey lists SI3000-KS for purchase. Engineers should therefore treat the SI3000-KS as a potentially legacy or transition-related device and compare it with the recommended current family before committing a new design. The exact pinout is not reproduced in the supplied verified snippets, so pin-level wiring must be confirmed from the official manufacturer datasheet. This page combines the verified distributor classification and specifications with procurement context and design guidance without inventing missing electrical parameters. This page synthesizes distributor listings, lifecycle notices, codec specifications, replacement guidance, and practical application considerations. It distinguishes verified facts from unavailable parameters, highlights the Skyworks recommendation concerning Si3000-C-FS, and avoids treating a distributor availability statement as proof of long-term design support.

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SI3010-FS - 2.4 kbps Global DAA | Silicon Labs
SI3010-FS

SI3010-FS - 2.4 kbps Global DAA | Silicon Labs

The Silicon Labs SI3010-FS is a 2.4 kbps direct access arrangement integrated with a global DAA and supplied in a 16-pin SOIC package. It operates from a 3 V to 3.6 V supply, supports a 0°C to 70°C temperature range, and is intended for telephone-line interface and ISOmodem applications. The SI3010-FS combines the line-side signaling functions of a direct access arrangement with the digital interface requirements of a V.22bis ISOMODEM system. A direct access arrangement, or DAA, is the line-side interface between a modem data terminal and a public switched telephone network. It converts analog line conditions into signals that can be processed by modem circuitry while providing the required isolation, hook-state detection, dialing, and line-current handling. A global DAA is designed to support internationally configurable telephone-line behavior rather than a single country-specific line interface. The SI3010-FS provides a 2.4 kbps data rate and operates from 3 V to 3.6 V, making it suitable for legacy V.22bis-class data communication equipment. Its 16-pin SOIC package is a surface-mount format suitable for automated assembly, and the reel configuration supports production feeding. The documented operating range of 0°C to 70°C identifies the SI3010-FS as a commercial-temperature device. The integrated DAA reduces the number of external line-interface functions required in a complete modem design. This can simplify the printed-circuit-board layout while preserving a standardized telephone-line interface. Because the part belongs to the Si2401 and Si2404 ISOmodem families, it is particularly relevant to designs requiring a line-side DAA paired with established modem controller or codec functionality. Typical uses include 2400 bps modem hardware, fax and data terminal equipment, industrial data links operating through telephone networks, and legacy communications controllers that require a globally programmable DAA. The SI3010-FS is also useful when a completed modem design must be maintained with an established 16-pin SOIC footprint and 2.4 kbps class performance. Designers should verify the complete SI3010 or Si240x companion-device arrangement because the DAA also requires suitable line-interface components and an appropriate host or modem companion. PCB layout must preserve the manufacturer's recommended analog and digital partitioning, while component selection must account for the telephone network's voltage and current requirements. This page consolidates verified distributor references, package and operating details, available replacement references, and practical selection guidance. It also identifies which technical and commercial values remain unavailable rather than presenting estimated specifications as verified facts.

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SI3010-GS - 3.6V DAA Interface IC | Silicon Labs | Telecom
SI3010-GS

SI3010-GS - 3.6V DAA Interface IC | Silicon Labs | Telecom

Silicon Labs SI3010-GS is an obsolete telecom interface IC implementing a Direct Access Arrangement (DAA) in a 16-pin SOIC package. The device operates from a 3 V to 3.6 V supply, consumes 15 mA, and is specified over a 0°C to 70°C temperature range. Its documented interfaces include parallel, SPI, and UART connections, while its 16-SOIC package measures approximately 3.90 mm in width. These specifications position the SI3010-GS as a line-side DAA controller for legacy telecom equipment rather than a general-purpose interface device. A Direct Access Arrangement is a subscriber-line interface controller that separates a telephone line codec from the host digital signal processor or CPU. In this product hierarchy, the SI3010-GS is a DAA interface IC within the broader category of telecom interface ICs. Such devices traditionally handled line-state signaling, loop control, and the host-side data interface used by customer-premises equipment, telephone adapters, and other legacy voice systems. The SI3010-GS offers a 3 V to 3.6 V operating supply, 15 mA supply current, and parallel, SPI, and UART host-interface options. Its 16-pin SOIC construction supports conventional surface-mount assembly and tubing or reel-handling workflows. Because the published status is obsolete, procurement decisions should emphasize confirmed availability, original manufacturer traceability, and functional equivalence with the specific firmware and line-interface implementation. Technically, the combination of a DAA function and multiple serial host interfaces allows the device to sit between a line-side codec or network termination path and an embedded controller. Parallel access can support legacy processor buses, while SPI and UART simplify connection to modern controllers. The 3.3 V-class supply also makes the device compatible with 3.3 V embedded systems, provided the associated clocking, reset, and interface levels comply with the system design. Typical uses include legacy Voice over IP terminal designs, embedded voice bridges, telephone-line interface modules, and industrial telecom equipment that retains a Silicon Labs-compatible DAA architecture. Replacement work should verify not only voltage and package dimensions but also register behavior, interrupt timing, clock requirements, line-side integration, and the host firmware's expectations. The principal design consideration is lifecycle risk: the SI3010-GS is listed as obsolete, so production continuity cannot be assumed. Engineers should obtain a controlled stock source, confirm the exact MPN and package, and validate any substitute against the manufacturer's SI3010 documentation before production release. This page consolidates the verified supply range, package details, lifecycle information, interface capabilities, and qualified same-footprint alternatives into one engineering-focused record. It also distinguishes documented facts from missing electrical details, helping designers evaluate sourcing risk and replacement decisions without inferring unsupported pinout or performance data.

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SI3010-KS - 3.3V Global Serial DAA | Silicon Labs | Telecom
SI3010-KS

SI3010-KS - 3.3V Global Serial DAA | Silicon Labs | Telecom

The Silicon Labs SI3010-KS is a 3.3 V direct access arrangement interface IC designed for global telephone-line applications, with a 3 V to 3.6 V supply range, 15 mA operating current, and a 16-pin SOIC package. Its programmable line interface supports parallel, SPI, and UART host connectivity, making it suitable for compact subscriber-line equipment and other telecom interfaces that need to minimize external analog-front-end components. A direct access arrangement, or DAA, is a semiconductor interface that connects a digital communications system to an analog telephone line. In the broader hierarchy, a DAA belongs to the telecommunications interface class, which sits within interface ICs and broader semiconductor solutions. Instead of implementing every line-side function with separate analog, isolation, switching, and signal-conditioning components, a DAA IC consolidates those functions into a controlled silicon interface. The SI3010-KS operates from a 3 V to 3.6 V supply and is identified by distributor listings as a single-circuit telecom DAA. Its available interface choices include parallel, SPI, and UART, giving the system designer several host-bus options for registering, configuration, and line-status monitoring. The listed operating current of 15 mA provides a concrete power figure for preliminary 3.3 V rail budgeting in compact telecom equipment. The device is supplied in a 16-SOIC package measuring 3.90 mm in body width. Distributor records identify both tube packaging and surface-mount construction, while the package family remains SOIC, a surface-mount technology also known as small-outline integrated circuit packaging. The 16-pin arrangement supports a relatively compact land pattern compared with larger leaded telecom-interface packages. Typical uses include Voice over IP subscriber terminals, analog telephone adapters, customer premises equipment, embedded voice systems, and other products that must bridge a digital controller with a telephone line. The exact line-side operating modes, country-specific network requirements, and host protocol details should be confirmed in the manufacturer datasheet before production release. Design planning must account for the 3.3 V supply tolerance, the 15 mA current requirement, the analog telephone-line environment, and the need for correct external protection and hook-related circuitry. Because a DAA is safety- and network-interface sensitive, PCB routing, isolation boundaries, surge exposure, and regulatory requirements should be reviewed as a complete design rather than treated as a generic serial-interface layout. This product record combines verified distributor specifications, package information, cross-reference results, drop-in replacement analysis, application guidance, and design considerations. It highlights where the SI3010-KS matches the published SI3010-F-FSR comparison data and clearly identifies parameters that remain unverified rather than estimating unsupported electrical details.

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SI3012-KS - V.90 Global MC'97 Silicon DAA | Silicon Laboratories
SI3012-KS

SI3012-KS - V.90 Global MC'97 Silicon DAA | Silicon Laboratories

Silicon Laboratories SI3012-KS is a Global MC'97 silicon direct access arrangement for modem and telephone-line-interface applications, combining an AC'97 2.1-compliant primary or secondary codec with a global phone-line interface. The device provides 84 dB dynamic range across its transmit and receive paths, operates from a 5 V power supply, and is offered in a 16-pin SOIC package. A direct access arrangement, or DAA, is the telephone-interface portion of a modem or communications system. It connects the host codec and modem data path to an analog telephone line while providing the signaling, isolation, and transmit/receive functions needed for global line-interface operation. In the component hierarchy, the SI3012-KS is a communications interface IC rather than a general-purpose codec or memory device. Verified feature data identifies AC'97 2.1 compliance, support for primary or secondary codec operation, and compatibility with FCC, CTR21, JATE, and other public telephone network requirements. Its 84 dB dynamic range provides the principal quantified signal-path performance figure, while the 5 V supply simplifies integration with conventional communications equipment. The SI3012-KS is specifically associated with V.90 modem designs and is listed as a Modem V.90 device in 16-SOIC packaging. The product is marked not recommended for new designs, with Si3018 identified by the distributor listing as the recommended successor for new-product planning. This lifecycle distinction is important for maintenance and repair work involving existing V.90 equipment. Typical uses include V.90 data-modem hardware, analog telephone-line interfaces, primary and secondary AC'97 codec connections, and legacy communications equipment requiring global telephone-network interface support. Its 5 V operating supply and 84 dB transmit/receive dynamic range fit established analog modem architectures, while the stated regulatory and PTT compatibility support deployment across multiple international line standards. Designers should preserve the manufacturer's reference circuit and verify the external isolation, line-interface, and codec connections against the SI3012-KS datasheet. Because the SI3012-KS is not recommended for new designs, new products should evaluate the Si3018 instead of assuming functional interchangeability. The available search data does not provide a verified pinout, detailed timing specification, or manufacturer pricing, so those values should be confirmed before schematic capture or procurement. This page distinguishes the SI3012-KS communications DAA from the similarly named Sanken SI-3012KS low-dropout regulator, consolidates verified lifecycle and feature information, and identifies the documented successor path for engineers evaluating legacy V.90 modem designs.

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SI3014-KS Global MC-97 DAA | Silicon Labs | Telecom
SI3014-KS

SI3014-KS Global MC-97 DAA | Silicon Labs | Telecom

The Silicon Labs SI3014-KS is a global MC-97 direct-access-arrangement interface IC with an AC97 2.1-compliant codec interface, 84 dB transmit and receive dynamic range, a 5 V power supply, and greater-than-3000 V isolation. It is supplied in a surface-mount, 16-SOIC package measuring 0.154 inches, or 3.90 mm, in width. A direct-access arrangement, or DAA, is a telephone-line interface device that places a codec and line-side transceiver behind a digital host interface. In the broader hierarchy, the SI3014-KS belongs to interface ICs, telecom line interfaces, modem ICs, and semiconductor ICs. Its MC-97 architecture helps a host codec control the digital and analog telephone-line signal path while the integrated isolation barrier separates host-side circuitry from line-side circuitry. The verified data identifies the SI3014-KS as a primary or secondary codec interface that is compliant with FCC, CTR21, JATE, and other PTT requirements. Its 84 dB dynamic-range TX/RX paths support voice-quality signal handling. Operation from a 5 V supply and compatibility with 3.3 V-related product information may be useful in mixed-voltage telecom designs, but circuit-specific voltage limits must be confirmed against the manufacturer datasheet before implementation. The device uses ASK over home power lines as its listed data format, while additional source material identifies it as a global MC-97 silicon DAA for telephone and modem interfaces. These descriptions place it between a digital audio codec and an analog phone line, with isolation helping control fault energy and common-mode coupling. Users should account for the non-RoHS and contains-lead status stated in the verified distributor data when evaluating regulatory and assembly requirements. Typical uses include legacy caller-ID, fax, answering-machine, voice-mail, modem, PBX, and embedded telephone equipment. In these systems, the MC-97 interface can connect a host processor to the line-side transceiver while the AC97 link carries digital audio and control traffic. Existing equipment may also use the SSI interface described in distributor listings, although the exact supported interface configuration must be checked against the original system design. Designers should not treat the isolated line interface as a universal drop-in replacement without reviewing the pinout, supply rails, clocking, impedance, isolation, and regulatory circuit requirements. The verified data identifies the part as not recommended for new designs and points users toward the Si3018 datasheet, so lifecycle and sourcing checks are essential. This page combines the verified specifications, sourcing records, and practical constraints without inventing undocumented electrical values.

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SI3015-BS - 3.3V ISOmodem DAA | Silicon Laboratories
SI3015-BS

SI3015-BS - 3.3V ISOmodem DAA | Silicon Laboratories

The Silicon Laboratories SI3015-BS is a 3.3 V ISOmodem line-side direct access arrangement with an integrated global telephone-line interface, a 2.4 kbps V.90 data format, and a 16-SOIC package. It operates from 3.3 V or 5 V and is identified as an obsolete telecom interface IC. An ISOmodem is a modem chipset designed for direct access arrangements used by analog telephone equipment. In the signal chain, it belongs to the modem IC category, provides the telephone-line interface, and supports primary or secondary AC97 codec operation. This places the SI3015-BS between a host audio or data interface and the public switched telephone network, reducing the need for a separate external line interface circuit. The principal verified features include AC97 2.1 compliance, support for FCC, CTR21, JATE, and other PTT requirements, 84 dB dynamic range across the transmit and receive paths, a 5 V power supply option, and greater than 3000 V isolation. The 16-SOIC package measures 0.154 inch, or 3.90 mm, in width and is supplied in a tube for the SI3015-BS ordering code. Technically, the SI3015-BS combines modem functionality with a global line-side DAA rather than relying on a discrete telephone interface arrangement. Its 2.4 kbps V.90 format targets legacy data communications rather than broadband modem applications. The listed 3.3 V operating option supports lower-voltage host equipment, while 5 V operation accommodates legacy telecom circuitry. The published 84 dB dynamic range is relevant to voice and low-speed data quality, and the greater than 3000 V isolation rating provides the primary withstand information associated with the line interface. Typical uses include legacy fax and data terminal equipment, telephone answering devices, remote data terminals, industrial dial-up links, and embedded telephone-line products requiring a direct access arrangement. In these systems, the SI3015-BS can interface with an AC97 codec or compatible host while handling the line-side isolation and telephone-network requirements. Designers should confirm whether the obsolete lifecycle status and legacy 2.4 kbps data rate match the intended equipment. PCB work also requires review of the external telephone-network components, isolation boundary, analog line interface, and power arrangement because those implementation details are not fully characterized by the available verified excerpts. This page consolidates verified distributor excerpts, lifecycle information, package details, interface standards, and replacement-screening constraints. It clearly distinguishes documented SI3015-BS characteristics from unavailable electrical values, preventing an obsolete part from being presented with fabricated pin, pricing, or replacement data.

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SI3015-FS - V.90 Modem, 16-SOIC | Silicon Labs
SI3015-FS

SI3015-FS - V.90 Modem, 16-SOIC | Silicon Labs

The Silicon Labs SI3015-FS is a 2.4 kbit/s V.90 modem chipset with error correction, supplied in a 16-pin SOIC package measuring 0.154 inch by 3.90 mm. It belongs to the Si2400 ISOmodem family, whose integrated direct access arrangement and programmable telephone-line interface reduce the external circuitry required by a conventional modem design. An ISOmodem chipset is a semiconductor solution for connecting equipment to public telephone lines. It combines modem signal-processing and telephone-interface functions into one device family, reducing the need for a separate DSP data pump, modem controller, analog front end, isolation transformer, relays, and optocouplers. The SI3015-FS therefore sits within the broader modem IC and telephone-line interface hierarchy rather than serving as a general-purpose communications transceiver. The verified listing identifies the part as a V.90 modem operating at 2.4 kbit/s and identifies a 16-pin SOIC package. It also reports V.90 data formatting and tube packaging. A secondary technical listing describes the related SI3015-F-FS variant as a V.22bis ISOmodem chipset with error correction, while the family documentation describes programmable line-interface functionality. Detailed electrical ratings, protocol features not present in the supplied data, and pin assignments remain unverified and must be checked against the manufacturer datasheet before design release. The SI3015-FS is associated with legacy telephone-network equipment, data communications, fax systems, embedded modems, and industrial telephone interfaces. Its integrated ISOmodem architecture can shorten board development by consolidating functions that would otherwise occupy multiple discrete or integrated blocks. The 16-SOIC package is also straightforward to route on a through-hole PCB and can be assembled using conventional leaded-package processes. Designers must confirm country-specific line-interface requirements, isolation boundaries, ring detection, hook-switch control, impedance matching, and firmware compatibility before deployment. Do not assume that a distributor category label constitutes proof of regulatory approval. The supplied evidence also does not establish the target part's lifecycle status, pinout, absolute maximum ratings, or complete compliance declarations. This page consolidates the verified SI3015-FS product, package, protocol, sourcing, and datasheet information into an engineering-oriented record. Where evidence is insufficient, it explicitly identifies missing data rather than estimating electrical values or proposing unverified pin-compatible replacements. Compare the exact ordering code, datasheet revision, and line-interface schematic before substituting any related SI30xx or Si24xx device.

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SI3015-KS - 2.4 kbps V.90 Modem IC | Skyworks Solutions
SI3015-KS

SI3015-KS - 2.4 kbps V.90 Modem IC | Skyworks Solutions

The Skyworks Solutions SI3015-KS is a 2.4 kbps V.90 modem integrated circuit in a 16-pin SOIC package. The verified distributor listing identifies the device as a modem IC with V.90 operation, while available documentation describes the SI3015 family as a V.22BIS ISOMODEM chipset with error correction. These positions place SI3015-KS in the interface-IC hierarchy for legacy data communication and telephone-line modem designs. Its package supports conventional surface-mount PCB assembly while preserving access to the analog and digital interfaces required by a host controller. A modem integrated circuit is a mixed-signal interface component that converts digital data into line-signal waveforms and reconstructs digital data from received signals. Within the broader category of interface ICs, this function bridges a host processor or data terminal with a communications channel. The V.90 designation identifies the modem standard associated with the listed 2.4 kbps operating class, while V.22BIS documentation provides additional family-level context. Error-correction capability is particularly relevant when a design must recover reliably from line noise or signal impairments. The SI3015-KS combines an integrated modem function with a compact 16-SOIC footprint. Its primary verified features are the 2.4 kbps modem rate, V.90 listing, 16-pin SOIC package, surface-mount construction, and error-correction support as stated in the indexed datasheet description. The package is suited to industrial and telecommunications equipment that retains V.22bis or V.90-era interfaces. Because this is a legacy interface product, system compatibility, electrical limits, clocking, and interface timing should be confirmed against the original manufacturer documentation before a new PCB is released. The SI3015-KS belongs to a signal path where analog line-side behavior and digital host-side behavior meet. Designers commonly place it in terminal equipment, data-card hardware, remote-control systems, and embedded telephone-data products. Its 2.4 kbps speed is much slower than modern broadband links, but it remains useful for low-bandwidth, legacy, or cost-constrained systems whose counterpart equipment still supports the same modem standard and physical interface. A key procurement consideration is lifecycle status. The verified Mouser result states that SI3015-KS is “Not recommended for new designs” and directs users to the Si3018 datasheet. Consequently, the SI3015-KS is most appropriate for repair, continuation, or compatibility work rather than unrestricted greenfield adoption. Existing production programs should verify lifecycle status, availability, and any notice of change before committing a long-term BOM. This page consolidates verified distributor descriptions, lifecycle guidance, application context, and sourcing information for SI3015-KS. It distinguishes the 16-SOIC V.90 2.4 kbps listing from related SI3015 documentation while avoiding unsupported electrical claims. Engineers should use the datasheet and line-interface circuitry for final timing, pin, protection, and component-selection decisions.

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SI3016-BS - 3.3V Global DAA V.90 Modem | Skyworks
SI3016-BS

SI3016-BS - 3.3V Global DAA V.90 Modem | Skyworks

The Skyworks Solutions SI3016-BS is a 3.3 V enhanced global direct access arrangement and V.90 modem interface IC in a 16-pin SOIC package. It integrates the line-side functions required by processors that already contain a system-side DAA, including a programmable line interface, line-voltage monitor, loop-current monitor, parallel handset detection, and overload protection. Verified distributor data identifies the SI3016-BS as a modem-class, 16-SOIC device. A direct access arrangement, or DAA, is a telephone-line interface that separates the external analog network from the digital host processor. In the SI3016 architecture, the host processor provides the system-side DAA while SI3016-BS handles the line-side function. This division allows a design to eliminate a conventional analog front end, isolation transformer, relays, opto-isolators, and a 2- to 4-wire hybrid, according to the manufacturer datasheet carried by Mouser. Key verified features include 3.2 dBm transmit/receive levels, a 7 µA on-hook line-monitor current, parallel handset detection, and overload protection. The programmable line interface supports adaptation to global telephone-line requirements, while the 3.3 V supply matches contemporary embedded processor systems. These features are relevant to modem, voice-over-data, fax, and telephony equipment that uses a host processor with an integrated system-side DAA. SI3016-BS combines a mixed-signal line interface with digital modem signaling in one package. Its 16-pin small-outline package supports conventional surface-mount assembly and keeps the telephone-line interface compact. The part is identified as an industrial-temperature component in one distributor result, but the exact temperature range and absolute electrical limits were not included in the supplied excerpts and therefore are not inferred here. Typical applications include central-office terminal equipment, caller-ID interfaces, voice gateways, fax machines, modems, and embedded telephone systems. In these systems, the SI3016-BS can sit between the telephone network and a processor that integrates the system-side DAA. Its value comes from reducing external analog-interface components while retaining programmable line control and protection functions. Designers should confirm compatibility with the selected host processor, its system-side DAA, and the country-specific telephone-network requirements before production release. The manufacturer datasheet should govern pin connections, line-interface programming, electrical limits, timing, and test conditions. Designers should also preserve the required isolation and surge-protection strategy at the board and line-interface boundary. This page consolidates verified distributor listings, the available manufacturer datasheet link, package information, and documented feature data into one engineering-oriented reference. It deliberately leaves unsupported electrical limits, pricing tiers, pin functions, lifecycle claims, and drop-in equivalents unstated until authoritative data is available.

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