SI2493-D-FS - 56 kbps V.92 ISOmodem | Skyworks Solutions
料号： SI2493-D-FS ✓ 量产中SI2493-D-FS 概述
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.
直接替换替代料： SI2493-D-FS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： SI2493-D-FS （相同外形与封装尺寸） ——差异在于 Maximum Data Rate.
该产品暂无直接替换替代料。
请求替代料SI2493-D-FS 规格参数
| Device Type | System-side V.92 ISOmodem with global DAA |
| Maximum Data Rate | 56,000 bps |
| Line Interface | Full-duplex over Public Switched Telephone Network (PSTN) |
| Primary Standard | ITU-T V.92 |
| Supported ITU-T Formats | V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92 |
| Supported Bell Formats | Bell 103, Bell 212A |
| Error Correction | V.42, V.42bis |
| Compression | V.44 |
| Data Compatibility | MNP2-5 |
| Rate Control | Automatic rate negotiation |
| Upstream Mode | PCM upstream |
| Call Establishment | V.92 quick connect |
| 封装 | 16-pin SOIC |
| Package Code | SOP |
| Terminal Form | Gull wing |
| 安装类型 | Surface mount |
| Temperature Grade | Commercial |
| Integrated Functions | Modem controller with global data access arrangement (DAA) |
SI2493-D-FS sop 引脚配置指南
SI2493-D-FS（sop 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： SI2493-D-FS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SI2493-D-FS 适用于 6 应用s: Remote Industrial Terminal Access, Legacy Data Collection Equipment, Embedded Point-of-Sale Terminals, Remote Monitoring and Telemetry, Telephone-Based Equipment Maintenance, Backup Communication for Embedded Systems.
Remote Industrial Terminal Access
The SI2493-D-FS fits remote industrial terminals that must maintain service access over analog telephone lines. Its support for up to 56,000 bps, automatic rate negotiation, and V.92 quick connect provides a practical balance between connection speed and call-establishment overhead for maintenance sessions. The integrated global DAA simplifies the telephone-side architecture compared with a discrete modem implementation. Designers should use the manufacturer reference circuit for isolation, line termination, and power routing, and should verify that the deployed PSTN service supports the required V.92 mode.
Legacy Data Collection Equipment
The SI2493-D-FS is appropriate for data-collection equipment that connects to legacy remote meters, terminals, or management systems over PSTN. Support for V.21, V.22, V.23, V.29, V.32, V.34, V.90, and V.92 provides compatibility across a broad range of analog modem endpoints, while Bell 103 and Bell 212A formats broaden legacy interoperability. Automatic rate negotiation allows the system to adapt to line quality. Firmware must still implement the required authentication, retry, and data-integrity procedures expected by the remote equipment.
Embedded Point-of-Sale Terminals
Point-of-sale terminals operating where only analog telephone connectivity is available can use the SI2493-D-FS for host communications. V.92 quick connect is valuable for short transaction windows because it reduces connection-establishment overhead, while the 56,000 bps maximum rate accommodates moderate transaction payloads. The device's 16-pin SOIC package supports compact surface-mount assembly, but the telephone network section still requires careful layout and the appropriate regulatory isolation arrangement. Validate the complete transaction flow against the actual PSTN provider before production deployment.
Remote Monitoring and Telemetry
The SI2493-D-FS supports legacy remote monitoring equipment that must deliver alarms, status reports, and configuration data over analog telephone lines. Its broad protocol set allows interoperability with older endpoints, and V.92 quick connect can improve response time for short operator queries. The modem's compression and error-control functions are documented as V.44, V.42, and V.42bis, enabling the host software to select appropriate transfer characteristics. Application software should include timeouts and fallback modes because negotiated throughput depends on both endpoints and line conditions.
Telephone-Based Equipment Maintenance
Maintenance controllers that access field equipment over PSTN can use the SI2493-D-FS as an integrated system-side modem. Automatic rate negotiation lets the modem adapt to available line quality, and the common ITU-T and Bell formats increase the chance of compatibility with installed equipment. The 56,000 bps ceiling is sufficient for diagnostic logs, parameter uploads, and firmware transfer when line quality permits it. Security should be implemented at the application layer, including authentication and encrypted transport where the remote protocol permits it.
Backup Communication for Embedded Systems
The SI2493-D-FS can serve as a backup communications path for embedded systems whose primary link is unavailable. Its integration of the modem controller and global DAA reduces the board area required for a dedicated analog modem circuit, while support for older formats allows fallback to lower-speed modes when a V.92 connection cannot be established. Designers should evaluate how the backup link affects power budget and enclosure space. Keep the modem enable strategy independent so that it does not prevent the primary communication channel from operating.
工程参考数据： SI2493-D-FS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | 16-pin SOIC |
| Brand | Skyworks Solutions, Inc. |
| Maximum Data Rate | 56,000 bps |
| Primary Modem Standard | ITU-T V.92 |
| Line Operation | Full-duplex PSTN |
| Data Access Arrangement | Integrated global DAA |
| Compression Support | V.44 |
| Error Control | V.42 and V.42bis |
| Quick Connect | Supported |
| Temperature Grade | Commercial |
关键差异点
- Complete V.92 modem with integrated global DAA （对比 Discrete modem, codec, and telephone-interface implementation)
- Broad legacy format support in one controller （对比 Modems limited to a single high-speed ITU mode)
- Faster connection establishment for short transactions （对比 V.32-class connection establishment without V.92 quick connect)
设计说明
Treat the telephone-network section as an analog, isolation-sensitive circuit rather than as a conventional digital interface. Follow the manufacturer reference layout for the global DAA, protection components, isolation boundary, and telephone-line connections. Keep high-current and switching paths away from modem signal nodes, and confirm the creepage, clearance, and isolation requirements applicable to the deployment country before releasing the PCB.
Use the supply rails, decoupling values, and sequencing requirements shown in the Si2493 data sheet. The 16-pin SOIC device may combine analog, digital, and telephone-interface functions, so a single supply rail should not be assumed without checking each named pin's requirement. Validate startup, reset, and modem-enable behavior across the complete power range and include the required bypass capacitors directly at the device supply pins.
Do not select a replacement solely because it advertises V.92 or 56 kbps. Confirm that its 16-pin SOIC footprint is pin-to-pin compatible, that supply and clock requirements match, and that the host interface and DAA architecture are equivalent. Also verify that required legacy formats, automatic rate negotiation, compression, and quick-connect behavior remain available. Confirm regional telephone-network approvals before substituting an alternative modem into a deployed product.
合规信息
The SI2493-D-FS is identified as a commercial-grade 16-pin SOIC modem. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations should be confirmed against the current manufacturer product documentation or declaration of compliance.