WMSIC Electronic Components

LX SN74LVC1T45DB(LX) SN74LVC1T45DB

ModelSN74LVC1T45DB(LX)
PackageSOT-23-6
BrandLX
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LX SN74LVC1T45DB(LX)
Type
LX
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LX
Electronic Component
SN74LVC1T45DB(LX)
Electronic Component
1
Package
SOT-23-6
Electronic Component
Converter / Level positions
Electronic Component
0.054g
Electronic Component
1
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0264498238
Operating Temperature
40℃~+125℃
Data
420Mbps
Output Type
Electronic Component
Type
Electronic Component
Operating Voltage(VCCA)
1.2V~5.5V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SN74LVC1T45DB(LX) 单通道双向电平移位器产品概述

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。

一、产品核心功能与定位

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。

二、关键电气参数解析

参数项 规格值 说明 通道类型 双向 信号可在A、B两侧双向传输,无需额外方向切换电路 数据速率 420Mbps 满足高速数字信号(如SPI、I2C、GPIO扩展)的跨电压传输需求,无明显延迟 工作电压(VCCA/VCCB) 1.2V~5.5V(独立供电) 兼容1.2V、1.8V、3.3V、5V等主流逻辑电平,适配多类型MCU、外设 输出类型 三态 支持总线共享,可通过方向控制脚切换通道状态(输入/输出/高阻) 工作温度范围 -40℃~+125℃ 工业级温度特性,覆盖户外、工业控制等 harsh环境需求 通道数/元件数 1通道/1元件 单通道设计,适合点对点跨电压连接,避免多通道冗余 断电保护 支持 任意一侧电源断电时,对应通道自动进入高阻态,防止信号倒灌损坏电路

三、封装与引脚配置

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:

  1. 1脚(A1):A侧输入/输出引脚(三态);
  2. 2脚(DIR):方向控制脚(高电平→A→B传输,低电平→B→A传输);
  3. 3脚(GND):电源地;
  4. 4脚(B1):B侧输入/输出引脚(三态);
  5. 5脚(VCCB):B侧电源引脚(1.2V~5.5V);
  6. 6脚(VCCA):A侧电源引脚(1.2V~5.5V)。

四、核心特性与应用优势

  1. 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。

  2. 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。

  3. 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)。

  4. 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。

  5. 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。

五、典型应用场景

  1. 跨电压MCU通信:低功耗MCU(1.2V)与3.3V/5V外设(如LCD、传感器)之间的GPIO、UART、SPI接口电平转换;
  2. 工业传感器交互:工业级3.3V传感器(如温度、压力传感器)与5V PLC控制器之间的信号匹配;
  3. 便携式电子设备:智能手表(1.8V)与蓝牙模块(3.3V)、充电接口(5V)之间的电平转换;
  4. 汽车电子辅助系统:车载1.8V传感器(如胎压监测)与3.3V ECU之间的信号传输;
  5. 电池供电设备:低功耗设备(1.2V)与外部5V充电器/数据接口之间的电平转换,支持断电保护。

六、电气性能补充

  • 驱动能力:VCC=3.3V时,输出电流可达±24mA,满足大多数数字电路的驱动需求;
  • 静态功耗:典型静态电流<1μA,适合电池供电的低功耗系统;
  • ESD防护:支持人体模式(HBM)±2kV、机器模式(MM)±200V ESD防护,提升生产与使用中的抗静电能力。

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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