SN74AC08: maximum output current

Noriyuki Takahashi

Genius 10950 points

Part Number: SN74AC08

Hi team

I have question about the max output current of this device.

The abs max is +/-20mA while VOH and VOL are tested at IOL and IOH exceeding +/-20mA like the attached?

How should we understand this?

Regards,

Noriyuki Takahashi

over 6 years ago

0 Emrys Maier over 6 years ago

TI__Guru* 97046 points

Hello Takahashi-san,
The absolute maximum current rating of the device is +- 50mA. The 20mA rating is for clamp diode current.

0 Noriyuki Takahashi over 6 years ago in reply to Emrys Maier

TI__Genius 10950 points

Emrys,

Even if the absolute maximum current is +/-50mA, this test conditions of IOH, IOL(+/-75mA) are exceeding the absolute maximum rating.

How should we understand this?

And looking at the note, there is a below description. Does this mean we can increase the IOH/IOL to 120mA if the duration is much shorter than 2ms?

" Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms."

Again, I attach the picture I mention now.

Regards,

Noriyuki Takahashi

0 Noriyuki Takahashi over 6 years ago in reply to Noriyuki Takahashi

TI__Genius 10950 points

Emrys,

Could you give any comment on this?
I would like to confirm whether this device can be used at 6V/75mA output at very short time.

Regards,
Noriyuki Takahashi

0 Emrys Maier over 6 years ago in reply to Noriyuki Takahashi

TI__Guru* 97046 points

Hello Takahashi-san,

The device is clearly specified to support 75mA for a duration of less than 2ms. If the duration is less than 2ms, the device will not be damaged.

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SN74AC08: maximum output current