* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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如果通用逻辑IC的安装位置不包含最大工作频率的描述,则可以使用以下公式粗略估算传输延迟时间(tpLH、tpHL)。最大工作频率 ≒ 1/(tpLH+ tpHL)。
表1列出了各系列代表性产品的传输延迟时间以及上述公式的计算结果。
传输延迟时间取决于IC功能。对于下列典型IC以外的IC,请参阅数据表,了解传输延迟时间并根据该时间计算最大工作频率。传输延迟时间还取决于实际应用中的导线长度和负载。
下面显示的最大工作频率仅供参考。请务必验证您选择的IC在实际使用条件下能否正常运行。
类型 |
系列名称 |
CMOS逻辑IC系列型号 |
单门逻辑(L-MOS)等效电路 |
工作电压范围 VCC(V) |
输出电流*2 IOUT(MA) |
tpLH ,tpHL( ns )*1 CL=50pF |
最大工作频率计算结果(MHz) |
---|---|---|---|---|---|---|---|
适用于5V系统 |
标准型 |
3至18 |
±0.51 |
200 |
3 |
||
高速型 |
2至6 |
±4.0或6.0 |
23 |
22 |
|||
4.5至5.5 |
31 |
17 |
|||||
进阶型 |
- |
2至5.5 |
±24 |
8.5 |
59 |
||
4.5至5.5 |
9.0 |
56 |
|||||
超高速型 |
2至5.5 |
±8.0 |
8.5 |
59 |
|||
10 |
50 |
||||||
9.5 |
53 |
||||||
4.5至5.5 |
8.5 |
59 |
|||||
适用于低电压系统 |
低压型 |
1.8至5.5 |
±16 |
6.5 |
77 |
||
超低压型 |
1.65至3.6 |
±24 |
4.2 |
114 |
*1:典型IC(TC4001,TC74HC244,TC74HCT244,TC74AC244,TC74ACT244,74VHC244,74VHC9541(An-Yn),VHCT244,VHCV244,74LCX244和TC74VCX244)在-40至85°C时的最大传输延迟时间,但TC4001显示的是25°C时最大传输延迟时间。
*2:这些输出电流值来自数据表的直流特性表。此外,还指定了绝对最大额定值。
以下文档也包含相关链接。