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SN74LVC1T45DB(LX)是灵星芯微(LX)推出的一款单通道双向逻辑电平转换器,专为不同电压域间的信号交互设计,具备宽电压适配、高速传输、断电保护等核心特性,适用于消费电子、工业控制、汽车电子等多领域的紧凑系统设计。
该器件作为单通道双向电平移位器,主要解决不同逻辑电平电路之间的信号不兼容问题:可实现1.2V~5.5V电压范围内的双向信号传输(A侧→B侧或B侧→A侧),支持三态输出,同时具备断电保护功能,防止电源异常时信号倒灌损坏电路,是跨电压系统设计的高性价比解决方案。
SN74LVC1T45DB(LX)采用SOT-23-6小型表面贴装封装,尺寸约2.9mm×1.6mm×1.1mm,节省PCB空间,适合便携式设备、小型模块等紧凑设计。引脚功能如下:
宽电压适配,简化设计
VCCA与VCCB独立供电且电压范围重叠(1.2V~5.5V),无需额外电平转换电路,可直接匹配低功耗MCU(1.2V)、3.3V外设、5V控制器等不同电压域器件。
高速传输,低失真
420Mbps的数据速率满足大多数数字接口(如SPI时钟达200MHz、UART波特率达1Mbps以上)的传输需求,信号延迟小、失真率低。
断电保护,提升可靠性
当任意一侧电源断电时,对应通道自动进入高阻态,避免信号通过未供电侧倒灌,保护电路免受过压/过流损坏,适合电源动态切换的系统(如电池供电设备)。
工业级温度,场景广泛
-40℃~+125℃的工作温度覆盖工业控制、户外监测、汽车辅助系统等场景,无需额外散热设计。
小型封装,集成度高
SOT-23-6封装尺寸小,可与其他元器件紧凑布局,降低系统体积,适合智能手机、智能穿戴、小型传感器模块等产品。
总结而言,SN74LVC1T45DB(LX)凭借宽电压、高速、断电保护、工业级温度与小型封装等优势,成为跨电压系统设计的优选器件,可有效简化电路设计、提升系统可靠性与集成度。
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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.
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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.
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The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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