require 3 characters or more.
About information presented in this cross reference
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.
Select Product Categories
Select Application
Find everything you need for your next product design. Simply select an application and click through to the block diagram to discover our semiconductor solutions.
New Products / News
The current value that can be driven by the output of the CMOS logic IC is explained based on the value described in the data sheet.Related items are DC output current I_{OUT} and DC V_{cc} current/ground current I_{CC/}I_{GND}.
I_{OUT} is the maximum current that can be driven by one output, and I_{CC/}I_{GND} is the maximum current that can be driven by the entire IC.
Note that the following formula does not always hold when the number of outputs is n.
I_{CC/}I_{GND} / n = I_{OUT}
Example: TC74ACT244FT
The following is a copy of the Absolute Maximum Ratings table from the TC74ACT244FT datasheet. The TC74ACT244FT provides an I_{OUT} of 50 mA and an I_{CC} of 200 mA. When all the eight outputs provide an equal amount of current, the amount of current that each output can drive is calculated to be:
200 mA / 8 = 25 mA
Therefore, not all the outputs can drive an output current of 50 mA as specified as I_{OUT} simultaneously.
Comparison of the absolute maximum rated output current I_{out} and DC V_{cc} current/ground current I_{CC/}I_{GND} among typical ICs of different CMOS logic series
Typical products used in the table
CMOS logic ICs : 74xx244
One-gate logic ICs : TC7S00, TC7PZ34, TC7xx125 for the other series
The following table shows the characteristics of the typical IC in each series as an overall indication of their output drive capabilities. (Different logic functions have different characteristics.)
Use this table as a guide when creating a design.
Output current I_{OUT} and DC V_{cc} current/ground current I_{CC/}I_{GND }are not specified for the Standard series.
Characteristic |
Symbol (Unit) |
Series |
|||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Standard |
High Speed |
Advanced |
Very High Speed |
Low Voltage, Medium Speed |
Low Voltage, High Speed |
||||||||||
CMOS Logic ICs |
One-Gate Logic ICs |
CMOS Logic ICs |
One-Gate Logic ICs |
CMOS Logic ICs |
CMOS Logic ICs |
CMOS Logic ICs |
One-Gate Logic ICs |
CMOS Logic ICs |
One-Gate Logic ICs |
CMOS Logic ICs |
One-Gate Logic ICs |
||||
TC40 TC45 |
TC4S TC4W |
TC74HC TC74HCT |
TC7S |
TC7W TC7WT |
TC74AC TC74ACT |
74VHC 74VHCT |
74VHCV |
TC7SH TC7WH TC7SET |
74LCX |
TC7SZ TC7WZ |
TC7PZ |
TC74VCX |
7UL |
||
Output current |
I_{OUT} (mA) |
- |
- |
±35 |
±12.5 |
±35 |
±50 |
±25 |
±50 |
±25 |
±50 |
±50 |
±50 |
±50 |
±25 |
DC V_{CC }current/ |
I_{cc/}I_{GND} (mA) |
- |
- |
±75 |
±25 |
±37.5 |
±200 |
±75 |
±100 |
±50 |
±100 |
±50 |
±100 |
±100 |
±50 |
Note: Any one of the absolute maximum ratings must not be exceeded even instantaneously.
Even when an IC is used at a temperature, current, and voltage within the absolute maximum rated and operating ranges, its reliability could degrade substantially if it is continuously exposed to heavy loads (e.g., high temperature, high current, high voltage, and large temperature changes). Be sure to build reliability into applications, referring to the Toshiba Semiconductor Reliability Handbook (particularly the sections on handling precautions and derating) and information on the reliability of individual devices (e.g., reliability test reports and estimated failure rates).
The following documents also contain related information:
Application notes
Basics of CMOS Logic Ics
CMOS Logic ICs Selection Guide
CMOS Logic ICs Usage Considerations
Glossary of CMOS Logic ICs
CMOS Logic Ics Standard series
CMOS Logic Ics TC74HC/HCT Series
CMOS Logic Ics TC74AC/ACT Series
CMOS Logic Ics TC74VHC/VHCT/VHC9/VHCV Series
CMOS Logic Ics TC74VCX/LCX Series
FAQs
Is it OK to connect a capacitor to an output?
How can I calculate the operating supply current and power dissipation?
Product lists
CMOS logic ICs
One-Gate Logic ICs (L-MOS)
Level Shifters
Product web page