- 制造厂商:TI
- 产品类别:逻辑和电压转换
- 技术类目:触发器、锁存器和寄存器 - 计数器
- 功能描述:12 位异步二进制计数器
- 点击这里打开及下载SN74LV4040A的技术文档资料
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The LV4040A devices are 12-bit asynchronous binary counters with the outputs of all stages available externally. A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low. The count is advanced on a high-to-low transition at the clock (CLK) input. Applications include time-delay circuits, counter controls, and frequency-dividing circuits.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.
- 2-V to 5.5-V VCC Operation
- Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
- Typical VOHV (Output VOH Undershoot) >2.3 V at VCC = 3.3 V, TA = 25°C
- Supports Mixed-Mode Voltage Operation on All Ports
- High On-Off Output-Voltage Ratio
- Low Crosstalk Between Switches
- Individual Switch Controls
- Extremely Low Input Current
- Ioff Supports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
- Function
- Counter
- Bits (#)
- 12
- Technology Family
- LV-A
- Supply voltage (Min) (V)
- 2
- Supply voltage (Max) (V)
- 5.5
- Input type
- Standard CMOS
- Output type
- Push-Pull
- Features
- Balanced outputs, Very high speed (tpd 5-10ns), Over-voltage tolerant inputs, Partial power down (Ioff)
SN74LV4040A的完整型号有:SN74LV4040AD、SN74LV4040ADBR、SN74LV4040ADGVR、SN74LV4040ADR、SN74LV4040AN、SN74LV4040ANSR、SN74LV4040APW、SN74LV4040APWR、SN74LV4040APWT、SN74LV4040ARGYR,以下是这些产品的关键参数及官网采购报价:
SN74LV4040AD,工作温度:-40 to 85,封装:SOIC (D)-16,包装数量MPQ:40个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040AD的批量USD价格:.522(1000+)
SN74LV4040ADBR,工作温度:-40 to 85,封装:SSOP (DB)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040ADBR的批量USD价格:.479(1000+)
SN74LV4040ADGVR,工作温度:-40 to 85,封装:TVSOP (DGV)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040ADGVR的批量USD价格:.435(1000+)
SN74LV4040ADR,工作温度:-40 to 85,封装:SOIC (D)-16,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040ADR的批量USD价格:.435(1000+)
SN74LV4040AN,工作温度:-40 to 85,封装:PDIP (N)-16,包装数量MPQ:25个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040AN的批量USD价格:.5(1000+)
SN74LV4040ANSR,工作温度:-40 to 85,封装:SO (NS)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040ANSR的批量USD价格:.479(1000+)
SN74LV4040APW,工作温度:-40 to 85,封装:TSSOP (PW)-16,包装数量MPQ:90个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040APW的批量USD价格:.522(1000+)
SN74LV4040APWR,工作温度:-40 to 85,封装:TSSOP (PW)-16,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040APWR的批量USD价格:.435(1000+)
SN74LV4040APWT,工作温度:-40 to 85,封装:TSSOP (PW)-16,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040APWT的批量USD价格:.522(1000+)
SN74LV4040ARGYR,工作温度:-40 to 85,封装:VQFN (RGY)-16,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-2-260C-1 YEAR,引脚镀层/焊球材料:NIPDAU,TI官网SN74LV4040ARGYR的批量USD价格:.457(1000+)
14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM
该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。
14-24-NL-LOGIC-EVM — Generic 14 through 24 pin non-leaded package evaluation module
Flexible EVM designed to support any logic or translation device that has a BQA, BQB, RGY (14-24 pin), RSV, RJW, or RHL package.SN74LV4040A IBIS Model
此参考设计可实现基于硬件的紧凑电路,以检测 ECG 测量期间出现的起搏器脉冲。它通过标志和板载 LED 指示有效起搏信号。借助此设计,用户可以通过板载 DAC 使用软件来配置起搏信号的各种参数(振幅、上升时间、脉冲持续时间、极性)。可通过板载 ADC 读取测量值。从电路板上的噪声 ECG 信号中提取起搏信号,并进行放大与调节。与 TI 的 ADS129X 系列器件配合使用时,增加了起搏检测功能。