Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PCA9557PW,118 是一款高性能的 I²C 及 SMBus 兼容的 I/O 扩展器,专为微控制器和数字信号处理器(DSP)应用设计。此器件由全球知名的半导体制造商 NXP(恩智浦)生产,具备强大的功能和灵活的应用潜力,尤其适合于需要额外输入/输出通道的应用场景。
引脚和接口: PCA9557PW 拥有 8 个可编程的 I/O 通道,能够根据需求灵活配置为输入或输出模式。这使得用户可以在不同的项目中调整 I/O 数量以适应特定功能需求。其支持的 I²C 和 SMBus 接口使得设备能简便地与各种主控器件进行通信,尤其方便在复杂系统中实现扩展。
供电电压范围: 该集成电路的供电电压范围为 2.3V 至 5.5V,这个广泛的电压范围保证了其能够与多种低功耗设备兼容,使其适用于从移动设备到中等功率设备的多种应用场合。
电流输出能力: PCA9557PW 的输出类型可配置为开漏极或推挽式,且能安全承受高达 20mA 的输出电流,具备良好的驱动能力。同时,其引脚也能支持输入信号,绝大多数情况下都能满足多样化的接口需求。
时钟频率: 最大时钟频率可达 400kHz,能够满足大多数快速并行数据通信的实时需求。这种高频率的性能使得 PCA9557PW 能够高效地处理大规模数据传输,特别适合于对反应速度要求较高的工业和通信应用。
工作温度范围: PCA9557PW 具备 -40°C 至 +85°C 的工作温度范围,使其在极端环境下依然稳定运行,尤其适合应用于自动化、汽车电子和通讯设备等高要求的场景中。
封装形式: 该芯片采用 16-TSSOP 封装,尺寸为 0.173" x 4.40mm,此设计便于表面贴装(SMD)技术安装,在空间受限的应用中显得尤为重要。同时,小巧的封装也提升了整体设计的集成度和可靠性。
PCA9557PW 的应用非常广泛,涵盖多个领域,例如:
PCA9557PW,118 是一款功能强大、灵活且具有高可靠性的 I/O 扩展器,凭借其出色的技术参数和多样化的应用能力,成为了现代电子设备中不可或缺的重要组件。不论是在消费电子、工业自动化还是汽车应用中,该器件都能够为客户提供有效的I/O解决方案,帮助简化设计和提升整体性能。
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Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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