SN74LVC07A: Output Current

Brian Wang0928

Genius 14360 points

Part Number: SN74LVC07A
Other Parts Discussed in Thread: TPL7407LA

Tool/software:

Hello team,

For the output current of this logic, it's in peak value or DC value?

If it's a DC value, what about the peak value? thanks.

8 months ago

0 Clemens Ladisch 8 months ago

Guru 318050 points

The output can be connected to a capacitive load of up to about 70 pF. Otherwise, the peak value is the same as the DC value.

0 Brian Wang0928 8 months ago in reply to Clemens Ladisch

TI__Genius 14360 points

Thanks. Here is the test with motor drive control system.

you can see the max. current is up to 54.33mA that is over 50mA SPEC. However, there is no any customer return for this device since this project released to market 3 years ago. Customer would like to make sure if there's no problem with this test waveform. thanks.

This Application is for LED driving like below circuitry. VPU=3.3V, and IC's VCC=3.3V

Regards

Brian

0 Clemens Ladisch 8 months ago in reply to Brian Wang0928

Guru 318050 points

The 50 mA limit is for the worst case and accounts for temperature extremes and manufacturing variations.

But operating at or beyond the limit is likely to degrade the device, and there is no guarantee. Consider using two outputs in parallel (but note the GND pin current limit), or a stronger driver like the TPL7407LA.

0 Brian Wang0928 8 months ago in reply to Clemens Ladisch

TI__Genius 14360 points

Hello Clemens,

Thanks. 50mA is a continue current on spec. however are you able to offer peak current spec with duration time that TI is able to guarantee? Thanks.

Regards

Brian

0 Clemens Ladisch 8 months ago in reply to Brian Wang0928

Guru 318050 points

I am not a TI employee.

Anyway, this was already answered in my first answer.

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SN74LVC07A: Output Current