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74VHC4040FT(BJ) 74VHC4040FT
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TOSHIBA 74VHC4040FT(BJ)
- Type
- TOSHIBA
- Minimum package
- 2500
Technical parameters
- Electronic Component
- TOSHIBA
- Electronic Component
- 74VHC4040FT(BJ)
- Electronic Component
- 1
- Package
- TSSOP16B
- Electronic Component
- Counter / Divider
- Electronic Component
- 0.124g
- Electronic Component
- Electronic Component
- Electronic Component
- 1
- Features
- positions
- Electronic Component
- BM0230030324
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 2V~5.5V
- Electronic Component
- 210MHz
- Logic Type
- Electronic Component
- Power Dissipation(Pd)
- 180mW
- (tpd)
- 4.8ns
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
74VHC4040FT(BJ) 产品概述
一、产品简介
74VHC4040FT(BJ) 为东芝（TOSHIBA）出品的单路 12 位二进制递增计数器，符合汽车级 AEC‑Q100 可靠性规范。器件采用 16 引脚 TSSOP‑B 封装，工作电压范围宽（2.0V ～ 5.5V），工作温度范围 -40℃ ～ +125℃，适合车规及工业级严苛环境。计数触发沿为下降沿，最高计数速率可达 210MHz，典型传播延迟 tpd 约 4.8ns，满足高速计数与时序分频应用需求。
二、主要性能特点
- 逻辑类型：二进制 UP 计数器，12 位输出，适合 2^12 级分频或累加计数。
- 工作电压：2.0V ～ 5.5V，支持 3.3V 与 5V 系统直接接入。
- 触发沿：下降沿触发的时钟输入，适配常见时钟极性。
- 计数速率：最大 210MHz，适合高频分频与高速事件计数。
- 时序性能：典型传播延迟约 4.8ns，快速响应且时序可预测。
- 汽车级资质：AEC‑Q100 认证，适合汽车电子环境的高可靠性要求。
三、典型应用场景
- 汽车电子：转速计、里程计、车载计时和分频电路。
- 工业控制：事件计数、频率分频、时间基准产生。
- 消费电子与通信：高频分频、时序生成、数字延时电路。
- 测试测量设备：脉冲计数与采样速率降低。
四、设计与使用要点
- 电源旁路：靠近器件供电引脚放置 0.1µF 陶瓷去耦电容，并在需要时增加 1µF 至 10µF 以抑制瞬态。
- 时钟完整性：为保证可靠计数，时钟线应短且阻抗匹配，长线加小电阻抑制反射；若时钟信号斜率慢，建议使用门控或施密特触发器整形。
- 输入输出处理：避免浮空输入，使用上拉/下拉电阻确保确定电平；输出为并行二进制位，级间翻转可能产生短暂毛刺，系统级采样应注意建立时间与保持时间。
- 级联与复位：可通过级联扩展位数或与其他逻辑配合实现同步控制；典型 4040 系列提供复位/清零功能（请参照引脚定义与时序图确认极性与使用方式）。
- 热与可靠性：在高温或高频工作下注意 PCB 散热与电源余量，遵循车规降额设计原则。
五、封装与可靠性
器件以 TSSOP‑16B 封装交付，适合表面贴装生产工艺，封装尺寸利于高密度布板。通过 AEC‑Q100 认证，满足车规级温度循环、振动和电气应力测试要求，适合长期可靠运行的车载与工业场景。
总结：74VHC4040FT(BJ) 将高速计数性能与车规级可靠性结合，适用于需要稳定、高速分频与计数的各种电子系统。在设计时注意时钟完整性、电源去耦及输出采样时序，可获得最佳性能与长期可靠性。
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