WMSIC Electronic Components

PCA9515ADP

ModelPCA9515ADP
PackageTSSOP-8
BrandNXP
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 22+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
NXP PCA9515ADP
Type
NXP
Unit
Electronic Component
Minimum package
2500

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
PCA9515ADP
Electronic Component
1
Package
TSSOP-8
Type
Buffer; Driver
Electronic Component
Signal Buffer / Repeater / Distributor
Electronic Component
0.209g
Electronic Component
1
Features
Bus Capacitor Isolated
Electronic Component
BM0258832487
Operating Temperature
40℃~+85℃
Operating Voltage
2.3V~3.6V
Data
400Kbps
Capacitor
6pF
Type
2 Bus

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

PCA9515ADP 产品概述

一、概述

PCA9515ADP 是恩智浦(NXP)推出的一款用于两线式总线(I²C/SMBus)信号缓冲与转接的器件。它用于将一条两线总线分成两个电气隔离的段,降低每段的等效电容负载,从而延长总线长度、增加器件挂载量并改善系统的稳健性。器件工作电压范围为 2.3V 至 3.6V,支持最高 400 kbps 的数据速率,工作温度范围 -40°C 到 +85°C,适合多数工业与消费类应用环境。封装为 TSSOP-8,品牌为 NXP(恩智浦)。

二、主要特性

  • 双向两线总线缓冲/驱动:在 SCL 和 SDA 两条线上实现透明的双向信号传递,无需外部方向控制。
  • 支持标准/快速模式:满足 I²C 标准模式及快速模式(最多 400 kHz)的速率要求。
  • 低输入电容:典型输入电容约 6 pF,有助于降低段内负载并提高信号完整性。
  • 宽工作电压:2.3V–3.6V 兼容主流 3.3V 系统,也可用于某些低压应用。
  • 工业级温度范围:-40°C 至 +85°C,适用于多种工作环境。

三、应用场景

  • 总线分段与扩展:将长总线或大量器件的总线分段以降低总线电容,延长可达距离。
  • 多主/多从系统:提高总线对多个主设备或大量从设备接入时的容错能力。
  • 工业控制与仪表:在需要可靠通信和宽温范围的场合使用。
  • 消费电子与通信设备:对 I²C 外设较多的主板或模块化系统。

四、设计与使用建议

  • 每一段总线应配置合适的上拉电阻,推荐值需根据段电容与所需上升时间计算;缓冲器两侧通常各自配置上拉电阻。
  • 在高频或长线环境下注意走线布局:尽量缩短 SCL/SDA 路径,使用连续地平面与去耦电容(VCC 近端 0.1µF)以降低噪声。
  • 避免在总线段上产生大的分支支线(stubs),以减少反射与时序问题。
  • 验证系统时序:若外围器件支持时钟展开或拉低(clock stretching),请在原理验证中确认缓冲器对这些特性的影响。

五、封装与选型提示

PCA9515ADP 常见封装为 TSSOP-8(请以最新数据手册为准),选型时确认工作电压与工作温度范围满足系统需求,并参考 NXP 官方数据手册获取完整电气特性、引脚排列与时序参数。对于对可靠性要求高的项目,建议在样机阶段进行总线负载与时序的充分验证。

总结:PCA9515ADP 是一款适用于 I²C/两线总线分段、缓冲与驱动的稳健器件,适合需要扩展总线、改善信号完整性或提升系统容错性的设计。购买与最终设计应参考 NXP 官方资料以取得最新规范与应用示例。

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